/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:44:36,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:44:36,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:44:36,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:44:36,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:44:36,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:44:36,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:44:36,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:44:36,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:44:36,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:44:36,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:44:36,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:44:36,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:44:36,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:44:36,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:44:36,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:44:36,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:44:36,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:44:36,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:44:36,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:44:36,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:44:36,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:44:36,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:44:36,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:44:36,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:44:36,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:44:36,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:44:36,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:44:36,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:44:36,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:44:36,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:44:36,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:44:36,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:44:36,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:44:36,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:44:36,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:44:36,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:44:36,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:44:36,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:44:36,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:44:36,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:44:36,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:44:36,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:44:36,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:44:36,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:44:36,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:44:36,448 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:44:36,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:44:36,449 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:44:36,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:44:36,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:44:36,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:44:36,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:44:36,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:44:36,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:44:36,450 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:44:36,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:44:36,451 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:44:36,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:44:36,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:44:36,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:44:36,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:44:36,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:44:36,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:44:36,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:44:36,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:44:36,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:44:36,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:44:36,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:44:36,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:44:36,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:44:36,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:44:36,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:44:36,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:44:36,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:44:36,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:44:36,975 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:44:36,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-24 23:44:37,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4863e64a/f5c8fd1ca06c4f1480b2a4b3d0eff571/FLAG860652559 [2020-09-24 23:44:37,551 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:44:37,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-24 23:44:37,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4863e64a/f5c8fd1ca06c4f1480b2a4b3d0eff571/FLAG860652559 [2020-09-24 23:44:37,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4863e64a/f5c8fd1ca06c4f1480b2a4b3d0eff571 [2020-09-24 23:44:37,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:44:37,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:44:37,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:37,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:44:37,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:44:37,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:37" (1/1) ... [2020-09-24 23:44:37,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecdd20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:37, skipping insertion in model container [2020-09-24 23:44:37,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:37" (1/1) ... [2020-09-24 23:44:37,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:44:37,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:44:38,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:38,278 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:44:38,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:38,470 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:44:38,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38 WrapperNode [2020-09-24 23:44:38,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:38,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:44:38,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:44:38,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:44:38,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:44:38,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:44:38,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:44:38,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:44:38,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (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 [2020-09-24 23:44:38,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:44:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:44:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-24 23:44:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-09-24 23:44:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:44:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:44:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-24 23:44:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-24 23:44:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:44:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 23:44:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:44:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:44:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 23:44:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:44:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-09-24 23:44:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:44:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:44:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 23:44:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:44:39,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:44:39,224 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-24 23:44:39,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:39 BoogieIcfgContainer [2020-09-24 23:44:39,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:44:39,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:44:39,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:44:39,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:44:39,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:44:37" (1/3) ... [2020-09-24 23:44:39,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73040c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:39, skipping insertion in model container [2020-09-24 23:44:39,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (2/3) ... [2020-09-24 23:44:39,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73040c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:39, skipping insertion in model container [2020-09-24 23:44:39,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:39" (3/3) ... [2020-09-24 23:44:39,248 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-09-24 23:44:39,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:44:39,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:44:39,290 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:44:39,320 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:44:39,320 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:44:39,320 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:44:39,320 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:44:39,320 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:44:39,320 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:44:39,321 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:44:39,321 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:44:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-09-24 23:44:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 23:44:39,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:39,359 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] [2020-09-24 23:44:39,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:39,366 INFO L82 PathProgramCache]: Analyzing trace with hash -309473205, now seen corresponding path program 1 times [2020-09-24 23:44:39,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:39,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145618060] [2020-09-24 23:44:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:39,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:39,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:39,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:39,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 23:44:39,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:44:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-24 23:44:39,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 23:44:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 23:44:39,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:39,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:44:39,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 23:44:39,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:40,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 23:44:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:40,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:40,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:44:40,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:40,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:44:40,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:40,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:40,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 23:44:40,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:40,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 23:44:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:40,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:40,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:44:40,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:44:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:44:40,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 23:44:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:40,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:44:40,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145618060] [2020-09-24 23:44:40,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:40,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:44:40,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893613885] [2020-09-24 23:44:40,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:44:40,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:40,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:44:40,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:44:40,115 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-09-24 23:44:40,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:40,586 INFO L93 Difference]: Finished difference Result 306 states and 369 transitions. [2020-09-24 23:44:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:44:40,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-24 23:44:40,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:40,604 INFO L225 Difference]: With dead ends: 306 [2020-09-24 23:44:40,605 INFO L226 Difference]: Without dead ends: 155 [2020-09-24 23:44:40,611 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 [2020-09-24 23:44:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-24 23:44:40,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-24 23:44:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 23:44:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-09-24 23:44:40,672 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 49 [2020-09-24 23:44:40,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:40,673 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-09-24 23:44:40,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:44:40,673 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-09-24 23:44:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 23:44:40,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:40,676 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] [2020-09-24 23:44:40,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:44:40,677 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:40,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1032631156, now seen corresponding path program 1 times [2020-09-24 23:44:40,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:40,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063579940] [2020-09-24 23:44:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:44:40,741 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:44:40,741 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:44:40,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:44:40,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:44:40 BoogieIcfgContainer [2020-09-24 23:44:40,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:44:40,773 INFO L168 Benchmark]: Toolchain (without parser) took 2861.65 ms. Allocated memory was 146.8 MB in the beginning and 235.4 MB in the end (delta: 88.6 MB). Free memory was 102.9 MB in the beginning and 152.3 MB in the end (delta: -49.4 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:40,774 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:44:40,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.53 ms. Allocated memory was 146.8 MB in the beginning and 201.3 MB in the end (delta: 54.5 MB). Free memory was 102.3 MB in the beginning and 177.9 MB in the end (delta: -75.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:40,776 INFO L168 Benchmark]: Boogie Preprocessor took 63.45 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 175.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:40,777 INFO L168 Benchmark]: RCFGBuilder took 696.77 ms. Allocated memory is still 201.3 MB. Free memory was 175.2 MB in the beginning and 139.3 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:40,778 INFO L168 Benchmark]: TraceAbstraction took 1532.53 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 138.6 MB in the beginning and 152.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:40,782 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 146.8 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 556.53 ms. Allocated memory was 146.8 MB in the beginning and 201.3 MB in the end (delta: 54.5 MB). Free memory was 102.3 MB in the beginning and 177.9 MB in the end (delta: -75.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.45 ms. Allocated memory is still 201.3 MB. Free memory was 177.9 MB in the beginning and 175.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 696.77 ms. Allocated memory is still 201.3 MB. Free memory was 175.2 MB in the beginning and 139.3 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1532.53 ms. Allocated memory was 201.3 MB in the beginning and 235.4 MB in the end (delta: 34.1 MB). Free memory was 138.6 MB in the beginning and 152.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 20.4 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, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 162 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, 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, 0.5s 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...