/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_1052a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:52,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:52,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:52,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:52,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:52,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:52,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:52,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:52,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:52,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:52,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:52,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:52,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:52,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:52,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:52,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:52,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:52,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:52,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:52,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:52,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:52,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:52,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:52,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:52,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:52,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:52,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:52,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:52,258 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 17:55:52,311 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:52,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:52,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:52,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:52,317 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:52,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:52,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:52,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:52,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:52,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:52,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:52,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:52,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:52,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:52,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:52,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:52,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:52,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:52,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:52,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:52,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:52,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:52,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:52,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:52,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:52,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:52,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:52,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:52,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:52,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:52,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:52,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:52,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:52,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:52,836 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:52,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052a.c [2020-10-23 17:55:52,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b4ef641/ebec052f16ab475a9b02e47340fef9f2/FLAG5325fe39f [2020-10-23 17:55:53,512 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:53,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052a.c [2020-10-23 17:55:53,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b4ef641/ebec052f16ab475a9b02e47340fef9f2/FLAG5325fe39f [2020-10-23 17:55:53,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b4ef641/ebec052f16ab475a9b02e47340fef9f2 [2020-10-23 17:55:53,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:53,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:53,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:53,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:53,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:53,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:53" (1/1) ... [2020-10-23 17:55:53,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4118f9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:53, skipping insertion in model container [2020-10-23 17:55:53,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:53" (1/1) ... [2020-10-23 17:55:53,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:53,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:54,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:54,217 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:54,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:54,264 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:54,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54 WrapperNode [2020-10-23 17:55:54,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:54,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:54,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:54,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:54,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ... [2020-10-23 17:55:54,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ... [2020-10-23 17:55:54,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ... [2020-10-23 17:55:54,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ... [2020-10-23 17:55:54,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ... [2020-10-23 17:55:54,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ... [2020-10-23 17:55:54,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ... [2020-10-23 17:55:54,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:54,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:54,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:54,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:54,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (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 17:55:54,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:54,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:54,402 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:54,402 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-10-23 17:55:54,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-23 17:55:54,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-10-23 17:55:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:54,407 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-23 17:55:54,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:54,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:54,911 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:54,911 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 17:55:54,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:54 BoogieIcfgContainer [2020-10-23 17:55:54,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:54,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:54,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:54,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:54,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:53" (1/3) ... [2020-10-23 17:55:54,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1cea97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:54, skipping insertion in model container [2020-10-23 17:55:54,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (2/3) ... [2020-10-23 17:55:54,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1cea97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:54, skipping insertion in model container [2020-10-23 17:55:54,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:54" (3/3) ... [2020-10-23 17:55:54,922 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052a.c [2020-10-23 17:55:54,935 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:54,940 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:54,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:54,982 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:54,982 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:54,983 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:54,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:54,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:54,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:54,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:54,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-23 17:55:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 17:55:55,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:55,009 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] [2020-10-23 17:55:55,010 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:55,017 INFO L82 PathProgramCache]: Analyzing trace with hash 414492769, now seen corresponding path program 1 times [2020-10-23 17:55:55,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:55,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114540309] [2020-10-23 17:55:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:55,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:55,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:55,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 17:55:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:55,385 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 17:55:55,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114540309] [2020-10-23 17:55:55,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:55,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:55,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093068527] [2020-10-23 17:55:55,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:55,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:55,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:55,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:55,417 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-23 17:55:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:55,648 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2020-10-23 17:55:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:55,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-23 17:55:55,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:55,660 INFO L225 Difference]: With dead ends: 81 [2020-10-23 17:55:55,660 INFO L226 Difference]: Without dead ends: 39 [2020-10-23 17:55:55,664 INFO L677 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 [2020-10-23 17:55:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-23 17:55:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-23 17:55:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-23 17:55:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-23 17:55:55,714 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 25 [2020-10-23 17:55:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:55,715 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-23 17:55:55,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-23 17:55:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 17:55:55,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:55,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:55:55,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:55,717 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:55,718 INFO L82 PathProgramCache]: Analyzing trace with hash -573378902, now seen corresponding path program 1 times [2020-10-23 17:55:55,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:55,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898502908] [2020-10-23 17:55:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:55,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:55,982 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:56,021 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:56,021 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:56,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:56,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:56 BoogieIcfgContainer [2020-10-23 17:55:56,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:56,068 INFO L168 Benchmark]: Toolchain (without parser) took 2173.72 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 77.7 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:56,069 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:56,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:56,071 INFO L168 Benchmark]: Boogie Preprocessor took 49.52 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:56,073 INFO L168 Benchmark]: RCFGBuilder took 596.62 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 132.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:56,074 INFO L168 Benchmark]: TraceAbstraction took 1150.27 ms. Allocated memory is still 151.0 MB. Free memory was 131.7 MB in the beginning and 77.7 MB in the end (delta: 54.0 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:56,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 363.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.52 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 596.62 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 132.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1150.27 ms. Allocated memory is still 151.0 MB. Free memory was 131.7 MB in the beginning and 77.7 MB in the end (delta: 54.0 MB). Peak memory consumption was 53.5 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 someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 66. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000] [L77] float x = 1.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L78] CALL, EXPR floor_float(x) VAL [\old(x)=1000000000000000000000000000015, huge_floor=1000000000000000000000000000000] [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000015, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000015] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000015, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000015] [L25] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000015, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000015] [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; VAL [\old(x)=1000000000000000000000000000015, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000015] [L78] RET, EXPR floor_float(x) VAL [floor_float(x)=1000000000000000000000000000003, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000015] [L78] float res = floor_float(x); [L81] CALL, EXPR isinf_float(res) VAL [\old(x)=1000000000000000000000000000003, huge_floor=1000000000000000000000000000000] [L60] __int32_t ix; VAL [\old(x)=1000000000000000000000000000003, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000003] [L62] ieee_float_shape_type gf_u; [L63] gf_u.value = (x) [L64] EXPR gf_u.word [L64] (ix) = gf_u.word [L66] ix &= 0x7fffffff [L67] return ((ix) == 0x7f800000L); VAL [\old(x)=1000000000000000000000000000003, \result=0, huge_floor=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000003] [L81] RET, EXPR isinf_float(res) VAL [huge_floor=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000003, x=1000000000000000000000000000015] [L81] COND TRUE !isinf_float(res) [L82] CALL reach_error() VAL [huge_floor=1000000000000000000000000000000] [L3] __assert_fail("0", "float_req_bl_1052a.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 8 SDslu, 41 SDs, 0 SdLazy, 46 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1944 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...