/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=BIGGEST --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/double_req_bl_0680b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:30:56,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:30:56,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:30:56,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:30:56,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:30:56,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:30:56,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:30:56,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:30:56,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:30:56,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:30:56,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:30:56,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:30:56,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:30:56,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:30:56,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:30:56,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:30:56,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:30:56,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:30:56,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:30:56,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:30:56,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:30:56,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:30:56,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:30:56,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:30:56,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:30:56,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:30:56,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:30:56,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:30:56,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:30:56,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:30:56,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:30:56,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:30:56,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:30:56,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:30:56,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:30:56,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:30:56,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:30:56,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:30:56,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:30:56,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:30:56,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:30:56,743 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 [2020-10-12 15:30:56,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:30:56,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:30:56,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:30:56,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:30:56,782 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:30:56,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:30:56,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:30:56,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:30:56,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:30:56,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:30:56,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:30:56,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:30:56,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:30:56,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:30:56,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:30:56,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:30:56,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:30:56,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:30:56,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:30:56,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:30:56,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:30:56,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:30:56,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:30:56,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:30:56,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:30:56,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:30:56,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:30:56,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:30:56,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:30:56,789 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:30:57,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:30:57,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:30:57,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:30:57,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:30:57,117 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:30:57,118 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0680b.c [2020-10-12 15:30:57,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0d5b2ad/a95b3accf6ed47d7826105a1ddd5ad0a/FLAGe60b77f7a [2020-10-12 15:30:57,617 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:30:57,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0680b.c [2020-10-12 15:30:57,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0d5b2ad/a95b3accf6ed47d7826105a1ddd5ad0a/FLAGe60b77f7a [2020-10-12 15:30:58,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0d5b2ad/a95b3accf6ed47d7826105a1ddd5ad0a [2020-10-12 15:30:58,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:30:58,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:30:58,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:58,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:30:58,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:30:58,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b4cf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58, skipping insertion in model container [2020-10-12 15:30:58,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:30:58,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:30:58,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:58,539 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:30:58,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:30:58,618 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:30:58,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58 WrapperNode [2020-10-12 15:30:58,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:30:58,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:30:58,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:30:58,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:30:58,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58" (1/1) ... [2020-10-12 15:30:58,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:30:58,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:30:58,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:30:58,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:30:58,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:30:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:30:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:30:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-12 15:30:58,772 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-12 15:30:58,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-12 15:30:58,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:30:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:30:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-12 15:30:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-12 15:30:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:30:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:30:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:30:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:30:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:30:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:30:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-12 15:30:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-12 15:30:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:30:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:30:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-12 15:30:58,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:30:59,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:30:59,497 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-12 15:30:59,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:30:59 BoogieIcfgContainer [2020-10-12 15:30:59,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:30:59,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:30:59,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:30:59,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:30:59,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:30:58" (1/3) ... [2020-10-12 15:30:59,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79656a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:30:59, skipping insertion in model container [2020-10-12 15:30:59,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:30:58" (2/3) ... [2020-10-12 15:30:59,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79656a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:30:59, skipping insertion in model container [2020-10-12 15:30:59,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:30:59" (3/3) ... [2020-10-12 15:30:59,517 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0680b.c [2020-10-12 15:30:59,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:30:59,537 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:30:59,551 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:30:59,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:30:59,575 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:30:59,575 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:30:59,575 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:30:59,575 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:30:59,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:30:59,576 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:30:59,576 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:30:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-10-12 15:30:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 15:30:59,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:30:59,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:30:59,604 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:30:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:30:59,610 INFO L82 PathProgramCache]: Analyzing trace with hash 947216650, now seen corresponding path program 1 times [2020-10-12 15:30:59,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:30:59,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473650591] [2020-10-12 15:30:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:30:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:30:59,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:30:59,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:00,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:00,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:31:00,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:31:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-12 15:31:00,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:31:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:31:00,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:31:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:00,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:00,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:00,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:00,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 15:31:00,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:00,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:00,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:31:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:00,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:00,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:00,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 15:31:00,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:31:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:31:00,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:31:00,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:31:00,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473650591] [2020-10-12 15:31:00,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:31:00,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:31:00,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357446050] [2020-10-12 15:31:00,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:31:00,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:31:00,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:31:00,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:31:00,295 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-10-12 15:31:00,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:31:00,656 INFO L93 Difference]: Finished difference Result 194 states and 310 transitions. [2020-10-12 15:31:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:31:00,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-12 15:31:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:31:00,671 INFO L225 Difference]: With dead ends: 194 [2020-10-12 15:31:00,671 INFO L226 Difference]: Without dead ends: 97 [2020-10-12 15:31:00,676 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 [2020-10-12 15:31:00,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-12 15:31:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-12 15:31:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 15:31:00,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2020-10-12 15:31:00,731 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 18 [2020-10-12 15:31:00,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:31:00,732 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2020-10-12 15:31:00,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:31:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2020-10-12 15:31:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:31:00,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:00,733 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] [2020-10-12 15:31:00,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:31:00,734 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:00,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:00,735 INFO L82 PathProgramCache]: Analyzing trace with hash -246249165, now seen corresponding path program 1 times [2020-10-12 15:31:00,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:00,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387656411] [2020-10-12 15:31:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:31:00,785 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:31:00,785 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:31:00,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:31:00,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:31:00 BoogieIcfgContainer [2020-10-12 15:31:00,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:31:00,810 INFO L168 Benchmark]: Toolchain (without parser) took 2777.76 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 103.4 MB in the beginning and 124.4 MB in the end (delta: -20.9 MB). Peak memory consumption was 72.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:00,814 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-12 15:31:00,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.77 ms. Allocated memory was 140.5 MB in the beginning and 206.0 MB in the end (delta: 65.5 MB). Free memory was 103.2 MB in the beginning and 178.4 MB in the end (delta: -75.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:00,816 INFO L168 Benchmark]: Boogie Preprocessor took 82.18 ms. Allocated memory is still 206.0 MB. Free memory was 178.4 MB in the beginning and 174.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:00,816 INFO L168 Benchmark]: RCFGBuilder took 804.69 ms. Allocated memory is still 206.0 MB. Free memory was 174.7 MB in the beginning and 132.1 MB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:00,817 INFO L168 Benchmark]: TraceAbstraction took 1299.46 ms. Allocated memory was 206.0 MB in the beginning and 234.4 MB in the end (delta: 28.3 MB). Free memory was 131.5 MB in the beginning and 124.4 MB in the end (delta: 7.1 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:00,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 585.77 ms. Allocated memory was 140.5 MB in the beginning and 206.0 MB in the end (delta: 65.5 MB). Free memory was 103.2 MB in the beginning and 178.4 MB in the end (delta: -75.2 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.18 ms. Allocated memory is still 206.0 MB. Free memory was 178.4 MB in the beginning and 174.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 804.69 ms. Allocated memory is still 206.0 MB. Free memory was 174.7 MB in the beginning and 132.1 MB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1299.46 ms. Allocated memory was 206.0 MB in the beginning and 234.4 MB in the end (delta: 28.3 MB). Free memory was 131.5 MB in the beginning and 124.4 MB in the end (delta: 7.1 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 256]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 162, overapproximation of someUnaryDOUBLEoperation at line 251, overapproximation of bitwiseAnd at line 160, overapproximation of someBinaryArithmeticDOUBLEoperation at line 163, overapproximation of someBinaryDOUBLEComparisonOperation at line 255. Possible FailurePath: [L37-L42] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L44-L49] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L51-L58] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L60-L62] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L139-L140] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L251] double x = -0.0; [L252] double y = 0.0; [L253] CALL, EXPR __ieee754_atan2(y, x) [L143] double z; [L144] __int32_t k, m, hx, hy, ix, iy; [L145] __uint32_t lx, ly; [L148] ieee_double_shape_type ew_u; [L149] ew_u.value = (x) [L150] EXPR ew_u.parts.msw [L150] (hx) = ew_u.parts.msw [L151] EXPR ew_u.parts.lsw [L151] (lx) = ew_u.parts.lsw [L153] ix = hx & 0x7fffffff [L155] ieee_double_shape_type ew_u; [L156] ew_u.value = (y) [L157] EXPR ew_u.parts.msw [L157] (hy) = ew_u.parts.msw [L158] EXPR ew_u.parts.lsw [L158] (ly) = ew_u.parts.lsw [L160] iy = hy & 0x7fffffff [L161-L162] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L163] return x + y; [L253] RET, EXPR __ieee754_atan2(y, x) [L253] double res = __ieee754_atan2(y, x); [L255] COND TRUE res != pi [L256] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 8 SDslu, 126 SDs, 0 SdLazy, 136 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred 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, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1411 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...