/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_1072d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:20:56,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:56,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:56,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:56,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:56,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:56,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:56,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:56,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:56,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:56,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:56,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:56,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:56,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:56,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:56,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:56,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:56,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:56,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:56,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:56,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:56,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:56,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:56,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:56,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:56,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:56,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:56,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:56,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:56,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:56,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:56,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:56,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:56,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:56,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:56,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:56,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:56,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:56,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:56,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:56,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:56,401 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 [2020-09-21 12:20:56,451 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:56,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:56,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:56,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:56,454 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:56,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:56,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:56,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:56,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:56,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:56,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:56,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:56,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:56,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:56,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:56,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:56,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:56,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:56,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:56,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:56,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:56,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:56,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:56,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:56,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:56,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:56,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:56,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:56,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:56,461 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:20:56,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:56,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:56,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:56,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:56,975 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:56,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072d.c [2020-09-21 12:20:57,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9e7729c/e7c6510d6f2648009f26496e595b8162/FLAGe1195f939 [2020-09-21 12:20:57,617 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:57,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1072d.c [2020-09-21 12:20:57,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9e7729c/e7c6510d6f2648009f26496e595b8162/FLAGe1195f939 [2020-09-21 12:20:57,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c9e7729c/e7c6510d6f2648009f26496e595b8162 [2020-09-21 12:20:57,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:57,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:57,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:57,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:57,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:57,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:57" (1/1) ... [2020-09-21 12:20:57,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:57, skipping insertion in model container [2020-09-21 12:20:57,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:57" (1/1) ... [2020-09-21 12:20:57,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:58,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:58,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:58,252 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:58,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:58,313 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:58,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:58 WrapperNode [2020-09-21 12:20:58,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:58,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:58,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:58,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:20:58,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:58" (1/1) ... [2020-09-21 12:20:58,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:58" (1/1) ... [2020-09-21 12:20:58,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:58" (1/1) ... [2020-09-21 12:20:58,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:58" (1/1) ... [2020-09-21 12:20:58,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:58" (1/1) ... [2020-09-21 12:20:58,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:58" (1/1) ... [2020-09-21 12:20:58,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:58" (1/1) ... [2020-09-21 12:20:58,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:20:58,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:20:58,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:20:58,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:20:58,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:58" (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 [2020-09-21 12:20:58,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:20:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:20:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-09-21 12:20:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-21 12:20:58,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:20:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:20:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-09-21 12:20:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:20:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:20:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:20:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:20:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:20:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:20:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-21 12:20:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:20:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:20:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:20:58,939 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:20:58,939 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-21 12:20:58,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:58 BoogieIcfgContainer [2020-09-21 12:20:58,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:20:58,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:20:58,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:20:58,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:20:58,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:57" (1/3) ... [2020-09-21 12:20:58,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7124a57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:58, skipping insertion in model container [2020-09-21 12:20:58,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:58" (2/3) ... [2020-09-21 12:20:58,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7124a57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:58, skipping insertion in model container [2020-09-21 12:20:58,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:58" (3/3) ... [2020-09-21 12:20:58,955 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072d.c [2020-09-21 12:20:58,967 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:20:58,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:20:58,998 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:20:59,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:20:59,026 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:20:59,026 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:20:59,026 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:20:59,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:20:59,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:20:59,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:20:59,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:20:59,047 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-21 12:20:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 12:20:59,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:59,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:20:59,056 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:59,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:59,063 INFO L82 PathProgramCache]: Analyzing trace with hash 753691903, now seen corresponding path program 1 times [2020-09-21 12:20:59,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:59,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818750804] [2020-09-21 12:20:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:59,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:59,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:20:59,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:20:59,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:20:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:59,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:20:59,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:59,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:59,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:59,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:59,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:20:59,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:59,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:59,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:59,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:20:59,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:20:59,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:20:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:59,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:59,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818750804] [2020-09-21 12:20:59,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:59,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:20:59,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389231499] [2020-09-21 12:20:59,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:20:59,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:59,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:20:59,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:20:59,513 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-09-21 12:20:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:59,711 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2020-09-21 12:20:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:20:59,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-21 12:20:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:59,724 INFO L225 Difference]: With dead ends: 68 [2020-09-21 12:20:59,724 INFO L226 Difference]: Without dead ends: 34 [2020-09-21 12:20:59,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:20:59,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-21 12:20:59,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-21 12:20:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-21 12:20:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-09-21 12:20:59,780 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 18 [2020-09-21 12:20:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:59,780 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-09-21 12:20:59,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:20:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-09-21 12:20:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:20:59,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:59,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:20:59,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:20:59,783 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:59,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1111015325, now seen corresponding path program 1 times [2020-09-21 12:20:59,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:59,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061580655] [2020-09-21 12:20:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:20:59,844 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:20:59,844 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:20:59,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:20:59,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:20:59 BoogieIcfgContainer [2020-09-21 12:20:59,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:20:59,905 INFO L168 Benchmark]: Toolchain (without parser) took 1938.57 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 104.1 MB in the beginning and 112.5 MB in the end (delta: -8.4 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:59,906 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-21 12:20:59,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.69 ms. Allocated memory is still 141.0 MB. Free memory was 103.4 MB in the beginning and 92.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:59,911 INFO L168 Benchmark]: Boogie Preprocessor took 147.15 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 181.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:59,912 INFO L168 Benchmark]: RCFGBuilder took 482.61 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 161.6 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:59,913 INFO L168 Benchmark]: TraceAbstraction took 949.59 ms. Allocated memory is still 204.5 MB. Free memory was 160.9 MB in the beginning and 112.5 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:59,923 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.69 ms. Allocated memory is still 141.0 MB. Free memory was 103.4 MB in the beginning and 92.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.15 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 181.7 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.61 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 161.6 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 949.59 ms. Allocated memory is still 204.5 MB. Free memory was 160.9 MB in the beginning and 112.5 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 67]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 66, overapproximation of bitwiseAnd at line 19, overapproximation of someUnaryFLOAToperation at line 62, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L62] float x = -0.0f; [L63] CALL, EXPR trunc_float(x) [L13] __int32_t signbit, w, exponent_less_127; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L21] COND FALSE !(exponent_less_127 < 23) [L37] COND TRUE exponent_less_127 == 255 [L38] return x + x; [L63] RET, EXPR trunc_float(x) [L63] float res = trunc_float(x); [L66] EXPR res == -0.0f && __signbit_float(res) == 1 [L66] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L67] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 29 SDslu, 5 SDs, 0 SdLazy, 41 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 646 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...