/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:37:06,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:37:06,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:37:06,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:37:06,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:37:06,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:37:06,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:37:06,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:37:06,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:37:06,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:37:06,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:37:06,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:37:06,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:37:06,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:37:06,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:37:06,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:37:06,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:37:06,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:37:06,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:37:06,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:37:06,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:37:06,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:37:06,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:37:06,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:37:06,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 21:37:06,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 21:37:06,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 21:37:06,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 21:37:06,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 21:37:06,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 21:37:06,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:37:06,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:37:06,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:37:06,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:37:06,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:37:06,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:37:06,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:37:06,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:37:06,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:37:06,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:37:06,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:37:06,352 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 21:37:06,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:37:06,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:37:06,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:37:06,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:37:06,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:37:06,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:37:06,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:37:06,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:37:06,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:37:06,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:37:06,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:37:06,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:37:06,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:37:06,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:37:06,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:37:06,368 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:37:06,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:37:06,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:37:06,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:37:06,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:37:06,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:37:06,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:37:06,369 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 21:37:06,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:37:06,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:37:06,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:37:06,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:37:06,877 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:37:06,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-04 21:37:06,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/505a4e99e/de65de386cdf49178b690f5ed84a00bf/FLAG5115a5d8b [2020-09-04 21:37:07,515 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:37:07,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-04 21:37:07,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/505a4e99e/de65de386cdf49178b690f5ed84a00bf/FLAG5115a5d8b [2020-09-04 21:37:07,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/505a4e99e/de65de386cdf49178b690f5ed84a00bf [2020-09-04 21:37:07,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:37:07,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:37:07,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:07,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:37:07,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:37:07,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:07" (1/1) ... [2020-09-04 21:37:07,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7bff4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:07, skipping insertion in model container [2020-09-04 21:37:07,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:07" (1/1) ... [2020-09-04 21:37:07,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:37:07,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:37:08,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:08,155 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:37:08,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:08,321 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:37:08,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08 WrapperNode [2020-09-04 21:37:08,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:08,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:37:08,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:37:08,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:37:08,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08" (1/1) ... [2020-09-04 21:37:08,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08" (1/1) ... [2020-09-04 21:37:08,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08" (1/1) ... [2020-09-04 21:37:08,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08" (1/1) ... [2020-09-04 21:37:08,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08" (1/1) ... [2020-09-04 21:37:08,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08" (1/1) ... [2020-09-04 21:37:08,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08" (1/1) ... [2020-09-04 21:37:08,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:37:08,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:37:08,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:37:08,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:37:08,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08" (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 21:37:08,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:37:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:37:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-04 21:37:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-09-04 21:37:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:37:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:37:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 21:37:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-04 21:37:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 21:37:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 21:37:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 21:37:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 21:37:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 21:37:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 21:37:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-09-04 21:37:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:37:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:37:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-04 21:37:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:37:09,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:37:09,113 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-04 21:37:09,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:09 BoogieIcfgContainer [2020-09-04 21:37:09,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:37:09,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:37:09,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:37:09,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:37:09,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:37:07" (1/3) ... [2020-09-04 21:37:09,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e80ab04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:37:09, skipping insertion in model container [2020-09-04 21:37:09,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08" (2/3) ... [2020-09-04 21:37:09,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e80ab04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:37:09, skipping insertion in model container [2020-09-04 21:37:09,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:09" (3/3) ... [2020-09-04 21:37:09,130 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-09-04 21:37:09,141 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:37:09,152 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:37:09,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:37:09,197 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:37:09,197 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:37:09,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:37:09,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:37:09,198 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:37:09,198 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:37:09,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:37:09,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:37:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-09-04 21:37:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-04 21:37:09,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:09,235 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 21:37:09,236 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:09,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:09,244 INFO L82 PathProgramCache]: Analyzing trace with hash -309473205, now seen corresponding path program 1 times [2020-09-04 21:37:09,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:09,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343595125] [2020-09-04 21:37:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:09,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:09,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 21:37:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 21:37:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:09,562 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 21:37:09,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343595125] [2020-09-04 21:37:09,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:09,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 21:37:09,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468206833] [2020-09-04 21:37:09,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 21:37:09,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:37:09,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 21:37:09,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 21:37:09,594 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-09-04 21:37:10,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:37:10,044 INFO L93 Difference]: Finished difference Result 306 states and 369 transitions. [2020-09-04 21:37:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 21:37:10,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-04 21:37:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:37:10,073 INFO L225 Difference]: With dead ends: 306 [2020-09-04 21:37:10,073 INFO L226 Difference]: Without dead ends: 155 [2020-09-04 21:37:10,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 21:37:10,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-04 21:37:10,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-04 21:37:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-04 21:37:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-09-04 21:37:10,198 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 49 [2020-09-04 21:37:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:37:10,199 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-09-04 21:37:10,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 21:37:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-09-04 21:37:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-04 21:37:10,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:10,206 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, 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 21:37:10,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:37:10,206 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:10,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:10,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1032631156, now seen corresponding path program 1 times [2020-09-04 21:37:10,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:10,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173031556] [2020-09-04 21:37:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:37:10,338 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:37:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:37:10,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:37:10,459 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:37:10,460 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:37:10,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:37:10,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:37:10 BoogieIcfgContainer [2020-09-04 21:37:10,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:37:10,563 INFO L168 Benchmark]: Toolchain (without parser) took 2721.37 ms. Allocated memory was 139.5 MB in the beginning and 236.5 MB in the end (delta: 97.0 MB). Free memory was 103.5 MB in the beginning and 165.1 MB in the end (delta: -61.6 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:10,563 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:37:10,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.87 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 178.9 MB in the end (delta: -75.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:10,566 INFO L168 Benchmark]: Boogie Preprocessor took 70.96 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 176.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:10,566 INFO L168 Benchmark]: RCFGBuilder took 725.87 ms. Allocated memory is still 201.9 MB. Free memory was 176.9 MB in the beginning and 140.0 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:10,568 INFO L168 Benchmark]: TraceAbstraction took 1437.75 ms. Allocated memory was 201.9 MB in the beginning and 236.5 MB in the end (delta: 34.6 MB). Free memory was 139.4 MB in the beginning and 165.1 MB in the end (delta: -25.7 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:10,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 480.87 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 103.3 MB in the beginning and 178.9 MB in the end (delta: -75.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.96 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 176.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 725.87 ms. Allocated memory is still 201.9 MB. Free memory was 176.9 MB in the beginning and 140.0 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1437.75 ms. Allocated memory was 201.9 MB in the beginning and 236.5 MB in the end (delta: 34.6 MB). Free memory was 139.4 MB in the beginning and 165.1 MB in the end (delta: -25.7 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934603, \old(Zero_fmod)=8589934595, \old(Zero_fmod)=8589934599, one_fmod=1, Zero_fmod={3:0}] [L126] float x = __VERIFIER_nondet_float(); VAL [__VERIFIER_nondet_float()=8589934598, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=8589934598, one_fmod=1, Zero_fmod={3:0}] [L109] __int32_t ix; VAL [\old(x)=8589934598, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L111] ieee_float_shape_type gf_u; VAL [\old(x)=8589934598, gf_u={5:0}, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L112] gf_u.value = (x) VAL [\old(x)=8589934598, gf_u={5:0}, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L113] EXPR gf_u.word VAL [\old(x)=8589934598, gf_u={5:0}, gf_u.word=8589934590, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L113] (ix) = gf_u.word VAL [(ix) = gf_u.word=8589934594, \old(x)=8589934598, gf_u={5:0}, gf_u.word=8589934590, ix=-2, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L115] ix &= 0x7fffffff VAL [\old(x)=8589934598, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L116] return (((ix) < 0x7f800000L)); VAL [\old(x)=8589934598, \result=1, ix=2139095039, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L129] COND TRUE isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934598, Zero_fmod={3:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=8589934598, \old(y)=8589934591, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=8589934598, \old(y)=8589934591, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={6:0}, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L22] gf_u.value = (x) VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={6:0}, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L23] EXPR gf_u.word VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={6:0}, gf_u.word=8589934589, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L23] (hx) = gf_u.word VAL [(hx) = gf_u.word=8589934604, \old(x)=8589934598, \old(y)=8589934591, gf_u={6:0}, gf_u.word=8589934589, hx=-3, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L26] ieee_float_shape_type gf_u; VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={2:0}, hx=-3, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L27] gf_u.value = (y) VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={2:0}, hx=-3, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L28] EXPR gf_u.word VAL [\old(x)=8589934598, \old(y)=8589934591, gf_u={2:0}, gf_u.word=4294967292, hx=-3, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L28] (hy) = gf_u.word VAL [(hy) = gf_u.word=8589934593, \old(x)=8589934598, \old(y)=8589934591, gf_u={2:0}, gf_u.word=4294967292, hx=-3, hy=-4, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L30] sx = hx & 0x80000000 VAL [\old(x)=8589934598, \old(y)=8589934591, hx=-3, hy=-4, one_fmod=1, sx=-1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L31] hx ^= sx VAL [\old(x)=8589934598, \old(y)=8589934591, hy=-4, one_fmod=1, sx=-1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L32] hy &= 0x7fffffff VAL [\old(x)=8589934598, \old(y)=8589934591, one_fmod=1, sx=-1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) VAL [\old(x)=8589934598, \old(y)=8589934591, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L35] return (x * y) / (x * y); VAL [\old(x)=8589934598, \old(y)=8589934591, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934601, one_fmod=1, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); VAL [fmod_float(x, y)=8589934601, one_fmod=1, res=8589934601, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L134] COND TRUE res != x VAL [one_fmod=1, res=8589934601, x=8589934598, y=8589934591, Zero_fmod={3:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8589934601, x=8589934598, y=8589934591, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 162 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 31 SDslu, 128 SDs, 0 SdLazy, 190 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred 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, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4464 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...