/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 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_1072c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:29:08,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:29:08,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:29:08,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:29:08,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:29:08,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:29:08,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:29:08,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:29:08,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:29:08,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:29:08,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:29:08,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:29:08,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:29:08,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:29:08,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:29:08,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:29:08,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:29:08,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:29:08,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:29:08,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:29:08,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:29:08,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:29:08,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:29:08,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:29:08,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:29:08,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:29:08,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:29:08,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:29:08,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:29:08,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:29:08,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:29:08,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:29:08,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:29:08,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:29:08,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:29:08,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:29:08,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:29:08,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:29:08,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:29:08,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:29:08,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:29:08,376 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 [2020-08-21 16:29:08,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:29:08,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:29:08,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:29:08,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:29:08,400 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:29:08,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:29:08,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:29:08,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:29:08,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:29:08,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:29:08,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:29:08,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:29:08,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:29:08,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:29:08,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:29:08,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:29:08,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:29:08,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:29:08,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:29:08,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:29:08,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:29:08,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:29:08,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:29:08,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:29:08,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:29:08,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:29:08,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:29:08,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:29:08,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:29:08,406 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 -> 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 -> 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 -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:29:08,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:29:08,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:29:08,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:29:08,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:29:08,746 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:29:08,747 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2020-08-21 16:29:08,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9054b8e8/44bccb13606d4b14ae4bdce9bc90f663/FLAG2ead23408 [2020-08-21 16:29:09,350 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:29:09,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2020-08-21 16:29:09,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9054b8e8/44bccb13606d4b14ae4bdce9bc90f663/FLAG2ead23408 [2020-08-21 16:29:09,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9054b8e8/44bccb13606d4b14ae4bdce9bc90f663 [2020-08-21 16:29:09,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:29:09,761 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:29:09,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:09,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:29:09,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:29:09,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:09" (1/1) ... [2020-08-21 16:29:09,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3e3485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:09, skipping insertion in model container [2020-08-21 16:29:09,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:29:09" (1/1) ... [2020-08-21 16:29:09,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:29:09,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:29:10,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:10,047 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:29:10,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:29:10,188 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:29:10,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10 WrapperNode [2020-08-21 16:29:10,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:29:10,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:29:10,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:29:10,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:29:10,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (1/1) ... [2020-08-21 16:29:10,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:29:10,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:29:10,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:29:10,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:29:10,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (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 [2020-08-21 16:29:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:29:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:29:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 16:29:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-08-21 16:29:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-21 16:29:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:29:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:29:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 16:29:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-08-21 16:29:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:29:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 16:29:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:29:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:29:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:29:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 16:29:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-21 16:29:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:29:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:29:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:29:10,712 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:29:10,712 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-08-21 16:29:10,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:10 BoogieIcfgContainer [2020-08-21 16:29:10,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:29:10,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:29:10,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:29:10,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:29:10,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:29:09" (1/3) ... [2020-08-21 16:29:10,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492b22fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:10, skipping insertion in model container [2020-08-21 16:29:10,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:29:10" (2/3) ... [2020-08-21 16:29:10,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492b22fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:29:10, skipping insertion in model container [2020-08-21 16:29:10,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:29:10" (3/3) ... [2020-08-21 16:29:10,731 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072c.c [2020-08-21 16:29:10,742 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:29:10,750 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:29:10,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:29:10,785 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:29:10,786 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:29:10,786 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:29:10,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:29:10,786 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:29:10,786 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:29:10,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:29:10,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:29:10,804 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-08-21 16:29:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 16:29:10,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:10,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:29:10,812 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:10,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1730648367, now seen corresponding path program 1 times [2020-08-21 16:29:10,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:10,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796442620] [2020-08-21 16:29:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:10,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:29:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:11,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:29:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:29:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:29:11,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796442620] [2020-08-21 16:29:11,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:29:11,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:29:11,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254903417] [2020-08-21 16:29:11,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:29:11,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:29:11,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:29:11,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:29:11,064 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-08-21 16:29:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:29:11,361 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2020-08-21 16:29:11,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:29:11,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-21 16:29:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:29:11,374 INFO L225 Difference]: With dead ends: 74 [2020-08-21 16:29:11,374 INFO L226 Difference]: Without dead ends: 37 [2020-08-21 16:29:11,378 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 [2020-08-21 16:29:11,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-21 16:29:11,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-21 16:29:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-21 16:29:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-21 16:29:11,429 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 19 [2020-08-21 16:29:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:29:11,429 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-21 16:29:11,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:29:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-21 16:29:11,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 16:29:11,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:29:11,434 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] [2020-08-21 16:29:11,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:29:11,435 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:29:11,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:29:11,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1938753225, now seen corresponding path program 1 times [2020-08-21 16:29:11,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:29:11,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853122932] [2020-08-21 16:29:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:29:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:29:11,506 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:29:11,506 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:29:11,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:29:11,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:29:11 BoogieIcfgContainer [2020-08-21 16:29:11,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:29:11,533 INFO L168 Benchmark]: Toolchain (without parser) took 1771.74 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.3 MB in the beginning and 110.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:11,535 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-21 16:29:11,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.30 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.3 MB in the beginning and 179.8 MB in the end (delta: -79.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:11,537 INFO L168 Benchmark]: Boogie Preprocessor took 51.06 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 176.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:11,538 INFO L168 Benchmark]: RCFGBuilder took 478.23 ms. Allocated memory is still 201.3 MB. Free memory was 176.7 MB in the beginning and 152.9 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:11,539 INFO L168 Benchmark]: TraceAbstraction took 810.20 ms. Allocated memory is still 201.3 MB. Free memory was 152.9 MB in the beginning and 110.0 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:29:11,544 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 427.30 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 100.3 MB in the beginning and 179.8 MB in the end (delta: -79.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.06 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 176.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.23 ms. Allocated memory is still 201.3 MB. Free memory was 176.7 MB in the beginning and 152.9 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 810.20 ms. Allocated memory is still 201.3 MB. Free memory was 152.9 MB in the beginning and 110.0 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 81, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 85. Possible FailurePath: [L81] double x = -0.0; [L82] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L82] RET, EXPR trunc_double(x) [L82] double res = trunc_double(x); [L85] EXPR res == -0.0 && __signbit_double(res) == 1 [L85] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L86] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 32 SDslu, 5 SDs, 0 SdLazy, 46 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=41occurred 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, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 702 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...