/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:37:08,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:37:08,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:37:08,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:37:08,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:37:08,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:37:08,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:37:08,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:37:08,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:37:08,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:37:08,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:37:08,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:37:08,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:37:08,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:37:08,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:37:08,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:37:08,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:37:08,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:37:08,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:37:08,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:37:08,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:37:08,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:37:08,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:37:08,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:37:08,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 21:37:08,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 21:37:08,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 21:37:08,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 21:37:08,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 21:37:08,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 21:37:08,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:37:08,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:37:08,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:37:08,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:37:08,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:37:08,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:37:08,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:37:08,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:37:08,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:37:08,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:37:08,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:37:08,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:37:08,417 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:37:08,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:37:08,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:37:08,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:37:08,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:37:08,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:37:08,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:37:08,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:37:08,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:37:08,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:37:08,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:37:08,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:37:08,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:37:08,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:37:08,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:37:08,423 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:37:08,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:37:08,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:37:08,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:37:08,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:37:08,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:37:08,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:37:08,425 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 21:37:08,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:37:08,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:37:08,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:37:08,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:37:08,904 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:37:08,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-09-04 21:37:08,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e51341d94/b3d42973e7374bf482f27291bda922a4/FLAG475d7d750 [2020-09-04 21:37:09,464 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:37:09,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-09-04 21:37:09,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e51341d94/b3d42973e7374bf482f27291bda922a4/FLAG475d7d750 [2020-09-04 21:37:09,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e51341d94/b3d42973e7374bf482f27291bda922a4 [2020-09-04 21:37:09,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:37:09,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:37:09,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:09,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:37:09,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:37:09,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:09" (1/1) ... [2020-09-04 21:37:09,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf7e795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:09, skipping insertion in model container [2020-09-04 21:37:09,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:09" (1/1) ... [2020-09-04 21:37:09,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:37:09,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:37:10,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:10,137 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:37:10,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:10,198 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:37:10,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:10 WrapperNode [2020-09-04 21:37:10,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:10,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:37:10,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:37:10,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:37:10,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:10" (1/1) ... [2020-09-04 21:37:10,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:10" (1/1) ... [2020-09-04 21:37:10,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:10" (1/1) ... [2020-09-04 21:37:10,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:10" (1/1) ... [2020-09-04 21:37:10,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:10" (1/1) ... [2020-09-04 21:37:10,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:10" (1/1) ... [2020-09-04 21:37:10,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:10" (1/1) ... [2020-09-04 21:37:10,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:37:10,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:37:10,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:37:10,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:37:10,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:10" (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 [2020-09-04 21:37:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:37:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:37:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-04 21:37:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-04 21:37:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-04 21:37:10,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:37:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:37:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-04 21:37:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 21:37:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 21:37:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 21:37:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 21:37:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-04 21:37:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-04 21:37:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:37:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:37:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:37:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 21:37:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 21:37:10,764 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:37:10,764 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 21:37:10,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:10 BoogieIcfgContainer [2020-09-04 21:37:10,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:37:10,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:37:10,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:37:10,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:37:10,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:37:09" (1/3) ... [2020-09-04 21:37:10,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5b61e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:37:10, skipping insertion in model container [2020-09-04 21:37:10,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:10" (2/3) ... [2020-09-04 21:37:10,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5b61e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:37:10, skipping insertion in model container [2020-09-04 21:37:10,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:10" (3/3) ... [2020-09-04 21:37:10,781 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-09-04 21:37:10,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:37:10,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:37:10,829 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:37:10,860 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:37:10,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:37:10,861 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:37:10,861 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:37:10,861 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:37:10,861 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:37:10,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:37:10,862 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:37:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-04 21:37:10,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 21:37:10,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:10,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:37:10,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:10,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:10,912 INFO L82 PathProgramCache]: Analyzing trace with hash 337584138, now seen corresponding path program 1 times [2020-09-04 21:37:10,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:10,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552687031] [2020-09-04 21:37:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:11,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 21:37:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:11,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:37:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:11,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 21:37:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:37:11,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552687031] [2020-09-04 21:37:11,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:11,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 21:37:11,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552019962] [2020-09-04 21:37:11,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 21:37:11,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:37:11,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 21:37:11,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 21:37:11,279 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-04 21:37:11,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:37:11,559 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2020-09-04 21:37:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 21:37:11,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-04 21:37:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:37:11,574 INFO L225 Difference]: With dead ends: 132 [2020-09-04 21:37:11,575 INFO L226 Difference]: Without dead ends: 66 [2020-09-04 21:37:11,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 21:37:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-04 21:37:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-04 21:37:11,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 21:37:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-09-04 21:37:11,641 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 37 [2020-09-04 21:37:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:37:11,642 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-09-04 21:37:11,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 21:37:11,642 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-09-04 21:37:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-04 21:37:11,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:11,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:37:11,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:37:11,646 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:11,647 INFO L82 PathProgramCache]: Analyzing trace with hash -356550436, now seen corresponding path program 1 times [2020-09-04 21:37:11,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:11,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754593763] [2020-09-04 21:37:11,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:11,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:11,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 21:37:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:11,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:37:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:11,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-04 21:37:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:37:11,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754593763] [2020-09-04 21:37:11,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:11,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 21:37:11,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365465607] [2020-09-04 21:37:11,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 21:37:11,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:37:11,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 21:37:11,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 21:37:11,892 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-09-04 21:37:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:37:12,149 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-04 21:37:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 21:37:12,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-04 21:37:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:37:12,154 INFO L225 Difference]: With dead ends: 87 [2020-09-04 21:37:12,154 INFO L226 Difference]: Without dead ends: 71 [2020-09-04 21:37:12,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 21:37:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-04 21:37:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-04 21:37:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-04 21:37:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-04 21:37:12,174 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 46 [2020-09-04 21:37:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:37:12,175 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-04 21:37:12,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 21:37:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-04 21:37:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-04 21:37:12,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:12,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:37:12,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:37:12,178 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:12,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:12,178 INFO L82 PathProgramCache]: Analyzing trace with hash -192516793, now seen corresponding path program 1 times [2020-09-04 21:37:12,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:12,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173938762] [2020-09-04 21:37:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:12,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:12,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 21:37:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:12,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 21:37:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 21:37:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:37:12,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173938762] [2020-09-04 21:37:12,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:12,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 21:37:12,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787863889] [2020-09-04 21:37:12,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 21:37:12,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:37:12,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 21:37:12,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 21:37:12,363 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-04 21:37:12,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:37:12,563 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-04 21:37:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 21:37:12,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-04 21:37:12,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:37:12,566 INFO L225 Difference]: With dead ends: 91 [2020-09-04 21:37:12,566 INFO L226 Difference]: Without dead ends: 75 [2020-09-04 21:37:12,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 21:37:12,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-04 21:37:12,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-04 21:37:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-04 21:37:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-04 21:37:12,581 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 49 [2020-09-04 21:37:12,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:37:12,581 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-04 21:37:12,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 21:37:12,582 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-04 21:37:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-04 21:37:12,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:12,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:37:12,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 21:37:12,586 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash -587463417, now seen corresponding path program 1 times [2020-09-04 21:37:12,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:12,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076782518] [2020-09-04 21:37:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:37:12,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:37:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:37:12,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:37:12,717 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:37:12,717 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:37:12,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 21:37:12,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:37:12 BoogieIcfgContainer [2020-09-04 21:37:12,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:37:12,769 INFO L168 Benchmark]: Toolchain (without parser) took 2927.38 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 102.9 MB in the beginning and 132.5 MB in the end (delta: -29.6 MB). Peak memory consumption was 66.3 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:12,770 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:37:12,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.30 ms. Allocated memory is still 138.4 MB. Free memory was 102.7 MB in the beginning and 92.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:12,772 INFO L168 Benchmark]: Boogie Preprocessor took 144.36 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 179.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:12,773 INFO L168 Benchmark]: RCFGBuilder took 427.04 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 158.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:12,774 INFO L168 Benchmark]: TraceAbstraction took 1993.19 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 158.2 MB in the beginning and 132.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:12,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.30 ms. Allocated memory is still 138.4 MB. Free memory was 102.7 MB in the beginning and 92.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.36 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 179.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.04 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 158.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1993.19 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 158.2 MB in the beginning and 132.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 55. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095045, \old(y)=2139095046] [L35] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095045] [L12] __uint32_t w; VAL [\old(x)=2139095045, x=2139095045] [L15] ieee_float_shape_type gf_u; VAL [\old(x)=2139095045, gf_u={2:0}, x=2139095045] [L16] gf_u.value = (x) VAL [\old(x)=2139095045, gf_u={2:0}, x=2139095045] [L17] EXPR gf_u.word VAL [\old(x)=2139095045, gf_u={2:0}, gf_u.word=2139095041, x=2139095045] [L17] (w) = gf_u.word VAL [(w) = gf_u.word=2139095044, \old(x)=2139095045, gf_u={2:0}, gf_u.word=2139095041, w=2139095041, x=2139095045] [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) VAL [\old(x)=2139095045, w=2139095041, x=2139095045] [L31] return 0; VAL [\old(x)=2139095045, \result=0, w=2139095041, x=2139095045] [L35] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2139095045, \old(y)=2139095046, __fpclassify_float(x)=0, x=2139095045, y=2139095046] [L35] COND TRUE __fpclassify_float(x) == 0 VAL [\old(x)=2139095045, \old(y)=2139095046, __fpclassify_float(x)=0, x=2139095045, y=2139095046] [L36] return y; VAL [\old(x)=2139095045, \old(y)=2139095046, \result=2139095046, x=2139095045, y=2139095046] [L56] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=2139095046, x=2139095045, y=2139095046] [L56] float res = fmin_float(x, y); VAL [fmin_float(x, y)=2139095046, res=2139095046, x=2139095045, y=2139095046] [L58] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095046] [L44] return x != x; VAL [\old(x)=2139095046, \result=0, x=2139095046] [L58] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095046, x=2139095045, y=2139095046] [L58] COND TRUE !isnan_float(res) VAL [isnan_float(res)=0, res=2139095046, x=2139095045, y=2139095046] [L59] __VERIFIER_error() VAL [res=2139095046, x=2139095045, y=2139095046] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 221 SDtfs, 59 SDslu, 387 SDs, 0 SdLazy, 288 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 10626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...