/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:20:26,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:20:26,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:20:26,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:20:26,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:20:26,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:20:26,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:20:26,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:20:26,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:20:26,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:20:26,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:20:26,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:20:26,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:20:26,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:20:26,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:20:26,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:20:26,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:20:26,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:20:26,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:20:26,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:20:26,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:20:26,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:20:26,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:20:26,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:20:26,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:20:26,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:20:26,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:20:26,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:20:26,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:20:26,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:20:26,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:20:26,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:20:26,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:20:26,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:20:26,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:20:26,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:20:26,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:20:26,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:20:26,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:20:26,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:20:26,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:20:26,726 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 [2020-10-13 10:20:26,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:20:26,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:20:26,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:20:26,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:20:26,774 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:20:26,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:20:26,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:20:26,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:20:26,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:20:26,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:20:26,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:20:26,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:20:26,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:20:26,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:20:26,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:20:26,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:20:26,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:20:26,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:20:26,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:20:26,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:20:26,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:20:26,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:20:26,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:20:26,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:20:26,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:20:26,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:20:26,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:20:26,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:20:26,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:20:26,780 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:20:27,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:20:27,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:20:27,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:20:27,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:20:27,132 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:20:27,133 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270a.c [2020-10-13 10:20:27,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b3c8107f/21bbb0e63a284d44b2486dca52ff0593/FLAGfc3864d54 [2020-10-13 10:20:27,617 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:20:27,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1270a.c [2020-10-13 10:20:27,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b3c8107f/21bbb0e63a284d44b2486dca52ff0593/FLAGfc3864d54 [2020-10-13 10:20:28,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b3c8107f/21bbb0e63a284d44b2486dca52ff0593 [2020-10-13 10:20:28,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:20:28,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:20:28,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:28,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:20:28,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:20:28,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:28" (1/1) ... [2020-10-13 10:20:28,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39062356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28, skipping insertion in model container [2020-10-13 10:20:28,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:20:28" (1/1) ... [2020-10-13 10:20:28,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:20:28,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:20:28,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:28,413 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:20:28,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:20:28,617 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:20:28,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28 WrapperNode [2020-10-13 10:20:28,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:20:28,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:20:28,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:20:28,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:20:28,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28" (1/1) ... [2020-10-13 10:20:28,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28" (1/1) ... [2020-10-13 10:20:28,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28" (1/1) ... [2020-10-13 10:20:28,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28" (1/1) ... [2020-10-13 10:20:28,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28" (1/1) ... [2020-10-13 10:20:28,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28" (1/1) ... [2020-10-13 10:20:28,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28" (1/1) ... [2020-10-13 10:20:28,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:20:28,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:20:28,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:20:28,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:20:28,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28" (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 [2020-10-13 10:20:28,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:20:28,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:20:28,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-13 10:20:28,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2020-10-13 10:20:28,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-13 10:20:28,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:20:28,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:20:28,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-13 10:20:28,835 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-13 10:20:28,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:20:28,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-13 10:20:28,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:20:28,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:20:28,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:20:28,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-13 10:20:28,837 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2020-10-13 10:20:28,837 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-13 10:20:28,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:20:28,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:20:28,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:20:29,562 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:20:29,563 INFO L295 CfgBuilder]: Removed 34 assume(true) statements. [2020-10-13 10:20:29,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:29 BoogieIcfgContainer [2020-10-13 10:20:29,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:20:29,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:20:29,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:20:29,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:20:29,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:20:28" (1/3) ... [2020-10-13 10:20:29,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2d1754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:29, skipping insertion in model container [2020-10-13 10:20:29,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:20:28" (2/3) ... [2020-10-13 10:20:29,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2d1754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:20:29, skipping insertion in model container [2020-10-13 10:20:29,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:20:29" (3/3) ... [2020-10-13 10:20:29,578 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270a.c [2020-10-13 10:20:29,589 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:20:29,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:20:29,612 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:20:29,644 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:20:29,644 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:20:29,645 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:20:29,645 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:20:29,646 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:20:29,646 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:20:29,646 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:20:29,646 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:20:29,675 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-10-13 10:20:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:20:29,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:29,685 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] [2020-10-13 10:20:29,686 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:29,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1943061066, now seen corresponding path program 1 times [2020-10-13 10:20:29,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:29,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139126287] [2020-10-13 10:20:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:29,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:30,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:20:30,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:20:30,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 10:20:30,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:30,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:20:30,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:30,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:20:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:20:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:30,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:30,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:20:30,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:20:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:20:30,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:20:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:20:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:30,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:20:30,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:20:30,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 10:20:30,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:30,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:30,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:20:30,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:30,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:20:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:20:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:20:30,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:20:30,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:20:30,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:20:30,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:20:30,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 10:20:30,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:20:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:20:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:20:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:20:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:20:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:20:30,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139126287] [2020-10-13 10:20:30,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:20:30,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:20:30,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755938399] [2020-10-13 10:20:30,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:20:30,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:20:30,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:20:30,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:20:30,324 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 4 states. [2020-10-13 10:20:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:20:30,740 INFO L93 Difference]: Finished difference Result 196 states and 313 transitions. [2020-10-13 10:20:30,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:20:30,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-13 10:20:30,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:20:30,754 INFO L225 Difference]: With dead ends: 196 [2020-10-13 10:20:30,754 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 10:20:30,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:20:30,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 10:20:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-13 10:20:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 10:20:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2020-10-13 10:20:30,822 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 28 [2020-10-13 10:20:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:20:30,822 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2020-10-13 10:20:30,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:20:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2020-10-13 10:20:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:20:30,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:20:30,825 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] [2020-10-13 10:20:30,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:20:30,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:20:30,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:20:30,826 INFO L82 PathProgramCache]: Analyzing trace with hash -481090901, now seen corresponding path program 1 times [2020-10-13 10:20:30,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:20:30,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327443097] [2020-10-13 10:20:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:20:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:20:30,921 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:20:30,922 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:20:30,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:20:30,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:20:30 BoogieIcfgContainer [2020-10-13 10:20:30,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:20:30,962 INFO L168 Benchmark]: Toolchain (without parser) took 2933.95 ms. Allocated memory was 147.8 MB in the beginning and 232.8 MB in the end (delta: 84.9 MB). Free memory was 103.0 MB in the beginning and 144.5 MB in the end (delta: -41.5 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:30,963 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:20:30,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.73 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.8 MB in the beginning and 179.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:30,965 INFO L168 Benchmark]: Boogie Preprocessor took 132.05 ms. Allocated memory is still 204.5 MB. Free memory was 179.9 MB in the beginning and 176.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:30,966 INFO L168 Benchmark]: RCFGBuilder took 817.10 ms. Allocated memory is still 204.5 MB. Free memory was 176.6 MB in the beginning and 133.3 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:30,967 INFO L168 Benchmark]: TraceAbstraction took 1388.32 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 132.6 MB in the beginning and 144.5 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:20:30,972 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 590.73 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 102.8 MB in the beginning and 179.9 MB in the end (delta: -77.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.05 ms. Allocated memory is still 204.5 MB. Free memory was 179.9 MB in the beginning and 176.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 817.10 ms. Allocated memory is still 204.5 MB. Free memory was 176.6 MB in the beginning and 133.3 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1388.32 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 132.6 MB in the beginning and 144.5 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 234]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 118, overapproximation of bitwiseAnd at line 218. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L229] float x = 1.0f / 0.0f; [L230] float y = __VERIFIER_nondet_float(); [L231] CALL, EXPR __ieee754_hypotf(x, y) [L82] float a = x, b = y, t1, t2, y1, y2, w; [L83] __int32_t j, k, ha, hb; [L86] ieee_float_shape_type gf_u; [L87] gf_u.value = (x) [L88] EXPR gf_u.word [L88] (ha) = gf_u.word [L90] ha &= 0x7fffffffL [L92] ieee_float_shape_type gf_u; [L93] gf_u.value = (y) [L94] EXPR gf_u.word [L94] (hb) = gf_u.word [L96] hb &= 0x7fffffffL [L97] COND TRUE hb > ha [L98] a = y [L99] b = x [L100] j = ha [L101] ha = hb [L102] hb = j [L108] ieee_float_shape_type sf_u; [L109] sf_u.word = (ha) [L110] EXPR sf_u.value [L110] (a) = sf_u.value [L113] ieee_float_shape_type sf_u; [L114] sf_u.word = (hb) [L115] EXPR sf_u.value [L115] (b) = sf_u.value [L117] COND TRUE (ha - hb) > 0xf000000L [L118] return a + b; [L231] RET, EXPR __ieee754_hypotf(x, y) [L231] float res = __ieee754_hypotf(x, y); [L233] CALL, EXPR isinf_float(res) [L212] __int32_t ix; [L214] ieee_float_shape_type gf_u; [L215] gf_u.value = (x) [L216] EXPR gf_u.word [L216] (ix) = gf_u.word [L218] ix &= 0x7fffffff [L219] return ((ix) == 0x7f800000L); [L233] RET, EXPR isinf_float(res) [L233] COND TRUE !isinf_float(res) [L234] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 97 SDslu, 5 SDs, 0 SdLazy, 135 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred 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, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1782 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...