/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/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:20:37,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:37,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:37,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:37,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:37,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:37,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:37,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:37,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:37,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:37,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:37,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:37,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:37,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:37,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:37,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:37,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:37,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:37,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:37,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:37,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:37,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:37,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:37,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:37,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:37,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:37,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:37,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:37,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:37,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:37,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:37,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:37,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:37,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:37,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:37,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:37,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:37,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:37,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:37,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:37,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:37,438 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 12:20:37,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:37,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:37,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:37,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:37,467 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:37,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:37,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:37,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:37,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:37,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:37,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:37,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:37,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:37,469 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:37,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:37,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:37,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:37,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:37,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:37,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:37,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:37,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:37,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:37,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:37,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:37,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:37,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:37,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:37,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:37,473 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 12:20:37,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:37,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:38,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:38,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:38,007 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:38,010 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-21 12:20:38,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75c4a3713/38cf3620a0744703ac029d6702355ad1/FLAG54414e907 [2020-09-21 12:20:38,675 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:38,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-21 12:20:38,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75c4a3713/38cf3620a0744703ac029d6702355ad1/FLAG54414e907 [2020-09-21 12:20:38,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75c4a3713/38cf3620a0744703ac029d6702355ad1 [2020-09-21 12:20:39,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:39,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:39,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:39,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:39,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:39,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:38" (1/1) ... [2020-09-21 12:20:39,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb81a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39, skipping insertion in model container [2020-09-21 12:20:39,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:38" (1/1) ... [2020-09-21 12:20:39,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:39,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:39,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:39,365 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:39,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:39,550 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:39,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39 WrapperNode [2020-09-21 12:20:39,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:39,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:39,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:39,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:20:39,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (1/1) ... [2020-09-21 12:20:39,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:20:39,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:20:39,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:20:39,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:20:39,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (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 12:20:39,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:20:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:20:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 12:20:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-21 12:20:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-21 12:20:39,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:20:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:20:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-21 12:20:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 12:20:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-21 12:20:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:20:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:20:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:20:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:20:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:20:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:20:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-21 12:20:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:20:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:20:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-21 12:20:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:20:40,375 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:20:40,375 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-21 12:20:40,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:40 BoogieIcfgContainer [2020-09-21 12:20:40,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:20:40,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:20:40,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:20:40,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:20:40,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:38" (1/3) ... [2020-09-21 12:20:40,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebd800f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:40, skipping insertion in model container [2020-09-21 12:20:40,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:39" (2/3) ... [2020-09-21 12:20:40,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebd800f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:40, skipping insertion in model container [2020-09-21 12:20:40,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:40" (3/3) ... [2020-09-21 12:20:40,392 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-21 12:20:40,404 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:20:40,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:20:40,439 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:20:40,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:20:40,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:20:40,469 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:20:40,469 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:20:40,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:20:40,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:20:40,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:20:40,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:20:40,494 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-21 12:20:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:20:40,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:40,505 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 12:20:40,505 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:40,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:40,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-09-21 12:20:40,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:40,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627096518] [2020-09-21 12:20:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:40,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:40,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:20:40,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:20:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-21 12:20:40,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:20:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:20:41,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:41,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:41,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:41,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:20:41,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:41,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:41,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:20:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:41,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:20:41,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:20:41,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:20:41,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:41,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:41,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:20:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:41,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:41,093 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 12:20:41,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627096518] [2020-09-21 12:20:41,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:41,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:20:41,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287209439] [2020-09-21 12:20:41,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:20:41,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:41,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:20:41,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:20:41,125 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-09-21 12:20:41,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:41,493 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-09-21 12:20:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:20:41,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 12:20:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:41,510 INFO L225 Difference]: With dead ends: 142 [2020-09-21 12:20:41,511 INFO L226 Difference]: Without dead ends: 69 [2020-09-21 12:20:41,515 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 [2020-09-21 12:20:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-21 12:20:41,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-21 12:20:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-21 12:20:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-09-21 12:20:41,576 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-09-21 12:20:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:41,577 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-09-21 12:20:41,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:20:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-09-21 12:20:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:20:41,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:41,579 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] [2020-09-21 12:20:41,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:20:41,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:41,580 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-09-21 12:20:41,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:41,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328165025] [2020-09-21 12:20:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:20:41,634 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:20:41,635 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:20:41,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:20:41,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:20:41 BoogieIcfgContainer [2020-09-21 12:20:41,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:20:41,667 INFO L168 Benchmark]: Toolchain (without parser) took 2657.84 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 102.4 MB in the beginning and 181.0 MB in the end (delta: -78.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:41,668 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:20:41,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.22 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 177.6 MB in the end (delta: -75.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:41,670 INFO L168 Benchmark]: Boogie Preprocessor took 89.54 ms. Allocated memory is still 202.4 MB. Free memory was 177.6 MB in the beginning and 174.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:41,671 INFO L168 Benchmark]: RCFGBuilder took 739.55 ms. Allocated memory is still 202.4 MB. Free memory was 174.5 MB in the beginning and 138.4 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:41,672 INFO L168 Benchmark]: TraceAbstraction took 1280.53 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 137.7 MB in the beginning and 181.0 MB in the end (delta: -43.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:20:41,676 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 538.22 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 177.6 MB in the end (delta: -75.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.54 ms. Allocated memory is still 202.4 MB. Free memory was 177.6 MB in the beginning and 174.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 739.55 ms. Allocated memory is still 202.4 MB. Free memory was 174.5 MB in the beginning and 138.4 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1280.53 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 137.7 MB in the beginning and 181.0 MB in the end (delta: -43.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 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=74occurred 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, 0.4s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...