/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1381.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:56:13,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:56:13,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:56:13,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:56:13,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:56:13,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:56:13,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:56:13,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:56:13,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:56:13,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:56:13,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:56:13,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:56:13,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:56:13,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:56:13,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:56:13,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:56:13,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:56:13,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:56:13,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:56:13,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:56:13,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:56:13,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:56:13,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:56:13,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:56:14,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:56:14,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:56:14,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:56:14,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:56:14,024 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 [2020-10-23 17:56:14,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:56:14,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:56:14,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:56:14,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:56:14,086 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:56:14,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:56:14,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:56:14,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:56:14,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:56:14,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:56:14,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:56:14,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:56:14,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:56:14,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:56:14,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:56:14,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:56:14,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:56:14,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:56:14,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:56:14,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:56:14,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:56:14,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:56:14,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:56:14,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:56:14,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:56:14,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:56:14,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:56:14,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:56:14,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:56:14,094 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:56:14,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:56:14,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:56:14,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:56:14,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:56:14,582 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:56:14,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2020-10-23 17:56:14,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e74ce64/f384773733d545eab10386afa84e1fa2/FLAG044818f83 [2020-10-23 17:56:15,288 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:56:15,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1381.c [2020-10-23 17:56:15,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e74ce64/f384773733d545eab10386afa84e1fa2/FLAG044818f83 [2020-10-23 17:56:15,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e74ce64/f384773733d545eab10386afa84e1fa2 [2020-10-23 17:56:15,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:56:15,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:56:15,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:15,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:56:15,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:56:15,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138b1a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15, skipping insertion in model container [2020-10-23 17:56:15,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:56:15,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:56:15,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:15,919 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:56:15,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:15,958 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:56:15,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15 WrapperNode [2020-10-23 17:56:15,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:15,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:56:15,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:56:15,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:56:15,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:16,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:56:16,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:56:16,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:56:16,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:56:16,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (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 [2020-10-23 17:56:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:56:16,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:56:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:56:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2020-10-23 17:56:16,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-23 17:56:16,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:56:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:56:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:56:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:56:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:56:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-23 17:56:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2020-10-23 17:56:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:56:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:56:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:56:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:56:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:56:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-23 17:56:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:56:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:56:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:56:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:56:16,737 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:56:16,738 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 17:56:16,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:16 BoogieIcfgContainer [2020-10-23 17:56:16,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:56:16,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:56:16,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:56:16,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:56:16,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:15" (1/3) ... [2020-10-23 17:56:16,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48568181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:16, skipping insertion in model container [2020-10-23 17:56:16,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (2/3) ... [2020-10-23 17:56:16,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48568181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:16, skipping insertion in model container [2020-10-23 17:56:16,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:16" (3/3) ... [2020-10-23 17:56:16,753 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2020-10-23 17:56:16,769 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:56:16,775 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:56:16,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:56:16,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:56:16,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:56:16,833 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:56:16,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:56:16,834 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:56:16,834 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:56:16,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:56:16,834 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:56:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-23 17:56:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 17:56:16,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:16,870 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] [2020-10-23 17:56:16,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:16,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:16,879 INFO L82 PathProgramCache]: Analyzing trace with hash 767192926, now seen corresponding path program 1 times [2020-10-23 17:56:16,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:16,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889606987] [2020-10-23 17:56:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:56:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 17:56:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:17,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889606987] [2020-10-23 17:56:17,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:17,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:56:17,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037113161] [2020-10-23 17:56:17,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:56:17,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:17,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:56:17,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:56:17,269 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-10-23 17:56:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:17,429 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-10-23 17:56:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:56:17,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-23 17:56:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:17,440 INFO L225 Difference]: With dead ends: 57 [2020-10-23 17:56:17,441 INFO L226 Difference]: Without dead ends: 27 [2020-10-23 17:56:17,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:56:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-23 17:56:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-23 17:56:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-23 17:56:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-10-23 17:56:17,493 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 23 [2020-10-23 17:56:17,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:17,494 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-10-23 17:56:17,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:56:17,494 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-10-23 17:56:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 17:56:17,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:17,496 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] [2020-10-23 17:56:17,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:56:17,496 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:17,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:17,497 INFO L82 PathProgramCache]: Analyzing trace with hash -680788211, now seen corresponding path program 1 times [2020-10-23 17:56:17,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:17,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541848417] [2020-10-23 17:56:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:17,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:17,677 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:17,713 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:56:17,713 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:56:17,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:56:17,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:56:17 BoogieIcfgContainer [2020-10-23 17:56:17,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:56:17,756 INFO L168 Benchmark]: Toolchain (without parser) took 2109.08 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 85.0 MB in the end (delta: 42.5 MB). Peak memory consumption was 43.8 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:17,757 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:56:17,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.92 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 117.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:17,759 INFO L168 Benchmark]: Boogie Preprocessor took 42.56 ms. Allocated memory is still 152.0 MB. Free memory was 117.0 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:17,760 INFO L168 Benchmark]: RCFGBuilder took 736.49 ms. Allocated memory is still 152.0 MB. Free memory was 115.2 MB in the beginning and 131.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:17,761 INFO L168 Benchmark]: TraceAbstraction took 1009.34 ms. Allocated memory is still 152.0 MB. Free memory was 131.1 MB in the beginning and 85.0 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:17,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 303.92 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 117.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.56 ms. Allocated memory is still 152.0 MB. Free memory was 117.0 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 736.49 ms. Allocated memory is still 152.0 MB. Free memory was 115.2 MB in the beginning and 131.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1009.34 ms. Allocated memory is still 152.0 MB. Free memory was 131.1 MB in the beginning and 85.0 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. 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 35, overapproximation of bitwiseOr at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L45] float x = 0.0f / 0.0f; [L46] float y = __VERIFIER_nondet_float(); [L47] CALL, EXPR copysign_float(x, y) VAL [\old(x)=65, \old(y)=64] [L15] __uint32_t ix, iy; VAL [\old(x)=65, \old(y)=64, x=65, y=64] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (y) [L24] EXPR gf_u.word [L24] (iy) = gf_u.word [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L29] EXPR sf_u.value [L29] (x) = sf_u.value [L31] return x; VAL [\old(x)=65, \old(y)=64, \result=55, ix=59, iy=52, x=55, y=64] [L47] RET, EXPR copysign_float(x, y) VAL [copysign_float(x, y)=55, x=65, y=64] [L47] float res = copysign_float(x, y); [L50] CALL, EXPR isnan_float(res) VAL [\old(x)=55] [L35] return x != x; VAL [\old(x)=55, \result=0, x=55] [L50] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=55, x=65, y=64] [L50] COND TRUE !isnan_float(res) [L51] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1381.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 10 SDslu, 17 SDs, 0 SdLazy, 25 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1408 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...