/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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-c90d42b [2020-09-25 14:28:23,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:28:23,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:28:23,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:28:23,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:28:23,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:28:23,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:28:23,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:28:23,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:28:23,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:28:23,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:28:23,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:28:23,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:28:23,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:28:23,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:28:23,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:28:23,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:28:23,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:28:23,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:28:23,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:28:23,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:28:23,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:28:23,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:28:23,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:28:23,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:28:23,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:28:23,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:28:23,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:28:23,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:28:23,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:28:23,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:28:23,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:28:23,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:28:23,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:28:23,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:28:23,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:28:23,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:28:23,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:28:23,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:28:23,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:28:23,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:28:23,598 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 [2020-09-25 14:28:23,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:28:23,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:28:23,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:28:23,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:28:23,648 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:28:23,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:28:23,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:28:23,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:28:23,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:28:23,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:28:23,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:28:23,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:28:23,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:28:23,652 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:28:23,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:28:23,652 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:28:23,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:28:23,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:28:23,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:28:23,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:28:23,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:28:23,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:28:23,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:28:23,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:28:23,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:28:23,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:28:23,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:28:23,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:28:23,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:28:23,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:28:24,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:28:24,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:28:24,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:28:24,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:28:24,288 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:28:24,289 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072d.c [2020-09-25 14:28:24,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee200904/44e94eff3deb42cababcc7ce57c62dca/FLAGec04eaaf3 [2020-09-25 14:28:24,953 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:28:24,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1072d.c [2020-09-25 14:28:24,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee200904/44e94eff3deb42cababcc7ce57c62dca/FLAGec04eaaf3 [2020-09-25 14:28:25,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee200904/44e94eff3deb42cababcc7ce57c62dca [2020-09-25 14:28:25,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:28:25,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:28:25,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:25,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:28:25,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:28:25,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:25" (1/1) ... [2020-09-25 14:28:25,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d795e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25, skipping insertion in model container [2020-09-25 14:28:25,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:25" (1/1) ... [2020-09-25 14:28:25,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:28:25,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:28:25,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:25,619 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:28:25,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:25,681 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:28:25,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25 WrapperNode [2020-09-25 14:28:25,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:25,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:28:25,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:28:25,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:28:25,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25" (1/1) ... [2020-09-25 14:28:25,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25" (1/1) ... [2020-09-25 14:28:25,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25" (1/1) ... [2020-09-25 14:28:25,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25" (1/1) ... [2020-09-25 14:28:25,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25" (1/1) ... [2020-09-25 14:28:25,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25" (1/1) ... [2020-09-25 14:28:25,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25" (1/1) ... [2020-09-25 14:28:25,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:28:25,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:28:25,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:28:25,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:28:25,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25" (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 [2020-09-25 14:28:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:28:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:28:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-09-25 14:28:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-25 14:28:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:28:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:28:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-09-25 14:28:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:28:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 14:28:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:28:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:28:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:28:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 14:28:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-25 14:28:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:28:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:28:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:28:26,480 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:28:26,480 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 14:28:26,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:26 BoogieIcfgContainer [2020-09-25 14:28:26,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:28:26,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:28:26,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:28:26,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:28:26,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:28:25" (1/3) ... [2020-09-25 14:28:26,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c665f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:26, skipping insertion in model container [2020-09-25 14:28:26,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:25" (2/3) ... [2020-09-25 14:28:26,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c665f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:26, skipping insertion in model container [2020-09-25 14:28:26,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:26" (3/3) ... [2020-09-25 14:28:26,518 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072d.c [2020-09-25 14:28:26,541 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:28:26,551 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:28:26,574 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:28:26,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:28:26,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:28:26,609 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:28:26,609 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:28:26,609 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:28:26,609 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:28:26,609 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:28:26,610 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:28:26,636 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-09-25 14:28:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 14:28:26,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:26,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:26,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:26,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:26,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1005072347, now seen corresponding path program 1 times [2020-09-25 14:28:26,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:26,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159765572] [2020-09-25 14:28:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:26,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:27,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:27,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:28:27,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:27,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 14:28:27,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:27,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:28:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:27,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:28:27,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:27,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:27,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:28:27,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:27,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:28:27,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:27,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:27,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:28:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:27,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:27,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:28:27,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:27,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:28:27,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:27,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:28:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:28:27,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159765572] [2020-09-25 14:28:27,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:27,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:28:27,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997955648] [2020-09-25 14:28:27,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:28:27,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:27,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:28:27,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:28:27,358 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states. [2020-09-25 14:28:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:27,667 INFO L93 Difference]: Finished difference Result 160 states and 185 transitions. [2020-09-25 14:28:27,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:28:27,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 14:28:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:27,682 INFO L225 Difference]: With dead ends: 160 [2020-09-25 14:28:27,683 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 14:28:27,687 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 [2020-09-25 14:28:27,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 14:28:27,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-25 14:28:27,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 14:28:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2020-09-25 14:28:27,741 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 29 [2020-09-25 14:28:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:27,741 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2020-09-25 14:28:27,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:28:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2020-09-25 14:28:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 14:28:27,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:27,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:27,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:28:27,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:27,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:27,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1440108655, now seen corresponding path program 1 times [2020-09-25 14:28:27,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:27,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668705740] [2020-09-25 14:28:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:28:27,792 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:28:27,792 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:28:27,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:28:27,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:28:27 BoogieIcfgContainer [2020-09-25 14:28:27,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:28:27,852 INFO L168 Benchmark]: Toolchain (without parser) took 2532.82 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 103.1 MB in the beginning and 93.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:27,853 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:28:27,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.52 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 91.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:27,858 INFO L168 Benchmark]: Boogie Preprocessor took 182.05 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 91.6 MB in the beginning and 179.2 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:27,861 INFO L168 Benchmark]: RCFGBuilder took 626.04 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 154.9 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:27,863 INFO L168 Benchmark]: TraceAbstraction took 1347.91 ms. Allocated memory is still 201.9 MB. Free memory was 154.2 MB in the beginning and 93.7 MB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:27,868 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.52 ms. Allocated memory is still 140.0 MB. Free memory was 102.4 MB in the beginning and 91.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 182.05 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 91.6 MB in the beginning and 179.2 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 626.04 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 154.9 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1347.91 ms. Allocated memory is still 201.9 MB. Free memory was 154.2 MB in the beginning and 93.7 MB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 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 20, 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, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 15 SDslu, 59 SDs, 0 SdLazy, 99 SolverSat, 6 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 1372 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...