/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:37:06,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:37:06,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:37:06,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:37:06,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:37:06,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:37:06,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:37:06,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:37:06,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:37:06,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:37:06,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:37:06,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:37:06,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:37:06,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:37:06,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:37:06,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:37:06,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:37:06,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:37:06,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:37:06,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:37:06,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:37:06,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:37:06,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:37:06,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:37:06,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 21:37:06,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 21:37:06,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 21:37:06,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 21:37:06,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 21:37:06,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 21:37:06,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:37:06,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:37:06,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:37:06,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:37:06,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:37:06,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:37:06,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:37:06,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:37:06,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:37:06,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:37:06,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:37:06,303 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 21:37:06,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:37:06,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:37:06,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:37:06,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:37:06,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:37:06,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:37:06,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:37:06,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:37:06,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:37:06,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:37:06,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:37:06,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:37:06,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:37:06,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:37:06,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:37:06,318 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:37:06,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:37:06,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:37:06,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:37:06,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:37:06,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:37:06,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:37:06,320 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 21:37:06,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:37:06,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:37:06,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:37:06,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:37:06,819 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:37:06,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-04 21:37:06,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a89f2628d/ea45c3e3d0f948c69f19d11af3a41a44/FLAGa41a276eb [2020-09-04 21:37:07,502 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:37:07,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-04 21:37:07,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a89f2628d/ea45c3e3d0f948c69f19d11af3a41a44/FLAGa41a276eb [2020-09-04 21:37:07,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a89f2628d/ea45c3e3d0f948c69f19d11af3a41a44 [2020-09-04 21:37:07,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:37:07,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:37:07,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:07,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:37:07,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:37:07,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:07" (1/1) ... [2020-09-04 21:37:07,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e62aa9e 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 21:37:07,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:37:07" (1/1) ... [2020-09-04 21:37:07,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:37:07,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:37:08,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:08,132 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:37:08,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:37:08,309 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:37:08,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:37:08 WrapperNode [2020-09-04 21:37:08,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:37:08,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:37:08,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:37:08,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:37:08,327 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 21:37:08,328 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 21:37:08,347 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 21:37:08,353 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 21:37:08,375 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 21:37:08,384 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 21:37:08,387 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 21:37:08,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:37:08,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:37:08,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:37:08,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:37:08,395 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 21:37:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:37:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:37:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-04 21:37:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-04 21:37:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:37:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:37:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 21:37:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-04 21:37:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 21:37:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 21:37:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 21:37:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 21:37:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 21:37:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 21:37:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-04 21:37:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:37:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:37:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-04 21:37:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:37:09,016 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:37:09,017 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-04 21:37:09,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:37:09 BoogieIcfgContainer [2020-09-04 21:37:09,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:37:09,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:37:09,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:37:09,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:37:09,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:37:07" (1/3) ... [2020-09-04 21:37:09,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774ad962 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 21:37:09,041 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 21:37:09,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774ad962 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 21:37:09,042 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 21:37:09,044 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-09-04 21:37:09,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:37:09,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:37:09,091 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:37:09,115 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:37:09,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:37:09,115 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:37:09,115 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:37:09,115 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:37:09,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:37:09,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:37:09,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:37:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-04 21:37:09,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 21:37:09,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:09,154 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] [2020-09-04 21:37:09,155 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:09,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:09,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505082, now seen corresponding path program 1 times [2020-09-04 21:37:09,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:09,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944270496] [2020-09-04 21:37:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:37:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:09,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 21:37:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:37:09,476 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 21:37:09,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944270496] [2020-09-04 21:37:09,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:37:09,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 21:37:09,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812251032] [2020-09-04 21:37:09,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 21:37:09,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:37:09,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 21:37:09,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 21:37:09,511 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-09-04 21:37:09,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:37:09,982 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2020-09-04 21:37:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 21:37:09,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-04 21:37:09,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:37:09,999 INFO L225 Difference]: With dead ends: 308 [2020-09-04 21:37:10,000 INFO L226 Difference]: Without dead ends: 158 [2020-09-04 21:37:10,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 21:37:10,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-04 21:37:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-04 21:37:10,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 21:37:10,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2020-09-04 21:37:10,074 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 43 [2020-09-04 21:37:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:37:10,075 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2020-09-04 21:37:10,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 21:37:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2020-09-04 21:37:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-04 21:37:10,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:37:10,078 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] [2020-09-04 21:37:10,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:37:10,078 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:37:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:37:10,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1298136515, now seen corresponding path program 1 times [2020-09-04 21:37:10,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:37:10,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564353221] [2020-09-04 21:37:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:37:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:37:10,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:37:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:37:10,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:37:10,294 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:37:10,294 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:37:10,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:37:10,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:37:10 BoogieIcfgContainer [2020-09-04 21:37:10,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:37:10,353 INFO L168 Benchmark]: Toolchain (without parser) took 2527.35 ms. Allocated memory was 140.5 MB in the beginning and 233.3 MB in the end (delta: 92.8 MB). Free memory was 104.1 MB in the beginning and 161.8 MB in the end (delta: -57.6 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:10,354 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:37:10,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.46 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.9 MB in the beginning and 180.2 MB in the end (delta: -76.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:10,356 INFO L168 Benchmark]: Boogie Preprocessor took 83.09 ms. Allocated memory is still 203.4 MB. Free memory was 180.2 MB in the beginning and 177.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:10,357 INFO L168 Benchmark]: RCFGBuilder took 639.26 ms. Allocated memory is still 203.4 MB. Free memory was 177.7 MB in the beginning and 140.7 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:10,358 INFO L168 Benchmark]: TraceAbstraction took 1315.44 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 140.0 MB in the beginning and 161.8 MB in the end (delta: -21.7 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. [2020-09-04 21:37:10,362 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 140.5 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 484.46 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.9 MB in the beginning and 180.2 MB in the end (delta: -76.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.09 ms. Allocated memory is still 203.4 MB. Free memory was 180.2 MB in the beginning and 177.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 639.26 ms. Allocated memory is still 203.4 MB. Free memory was 177.7 MB in the beginning and 140.7 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1315.44 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 140.0 MB in the beginning and 161.8 MB in the end (delta: -21.7 MB). Peak memory consumption was 8.2 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 bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934599, \old(Zero_fmod)=8589934593, \old(Zero_fmod)=8589934596, one_fmod=1, Zero_fmod={3:0}] [L126] float x = 0.0f; VAL [one_fmod=1, x=0, Zero_fmod={3:0}] [L127] float y = __VERIFIER_nondet_float(); VAL [__VERIFIER_nondet_float()=8589934595, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L129] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=8589934595, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=8589934595, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; VAL [\old(x)=0, \old(y)=8589934595, gf_u={5:0}, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L22] gf_u.value = (x) VAL [\old(x)=0, \old(y)=8589934595, gf_u={5:0}, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L23] EXPR gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={5:0}, gf_u.word=8589934590, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L23] (hx) = gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={5:0}, gf_u.word=8589934590, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L26] ieee_float_shape_type gf_u; VAL [\old(x)=0, \old(y)=8589934595, gf_u={2:0}, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L27] gf_u.value = (y) VAL [\old(x)=0, \old(y)=8589934595, gf_u={2:0}, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L28] EXPR gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={2:0}, gf_u.word=4294967293, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L28] (hy) = gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={2:0}, gf_u.word=4294967293, hx=-2, hy=-3, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L30] sx = hx & 0x80000000 VAL [\old(x)=0, \old(y)=8589934595, hx=-2, hy=-3, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={3:0}] [L31] hx ^= sx VAL [\old(x)=0, \old(y)=8589934595, hy=-3, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={3:0}] [L32] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8589934595, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) VAL [\old(x)=0, \old(y)=8589934595, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={3:0}] [L35] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934595, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934600, one_fmod=1, x=0, y=8589934595, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); VAL [fmod_float(x, y)=8589934600, one_fmod=1, res=8589934600, x=0, y=8589934595, Zero_fmod={3:0}] [L134] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=8589934600, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=8589934595, Zero_fmod={3:0}] [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) VAL [one_fmod=1, res=8589934600, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=8589934595, Zero_fmod={3:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8589934600, x=0, y=8589934595, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 39 SDslu, 129 SDs, 0 SdLazy, 195 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred 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, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 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...