/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:18:34,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:34,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:34,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:34,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:34,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:34,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:34,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:34,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:34,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:34,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:34,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:34,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:34,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:34,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:34,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:34,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:34,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:34,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:34,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:34,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:34,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:34,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:34,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:34,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:34,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:34,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:34,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:34,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:34,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:34,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:34,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:34,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:34,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:34,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:34,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:34,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:34,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:34,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:34,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:34,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:34,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:18:34,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:34,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:34,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:34,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:34,736 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:34,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:34,737 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:34,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:34,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:34,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:34,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:34,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:34,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:34,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:34,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:34,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:34,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:34,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:34,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:34,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:34,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:34,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:34,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:34,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:34,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:34,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:34,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:34,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:34,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:34,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:18:35,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:35,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:35,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:35,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:35,284 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:35,285 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-09-21 11:18:35,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46c1a0c3f/9e917e13886f4dd7a3ce21c9821927d6/FLAGb0e48d634 [2020-09-21 11:18:35,929 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:35,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-09-21 11:18:35,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46c1a0c3f/9e917e13886f4dd7a3ce21c9821927d6/FLAGb0e48d634 [2020-09-21 11:18:36,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46c1a0c3f/9e917e13886f4dd7a3ce21c9821927d6 [2020-09-21 11:18:36,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:36,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:36,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:36,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:36,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:36,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:36" (1/1) ... [2020-09-21 11:18:36,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2356d200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36, skipping insertion in model container [2020-09-21 11:18:36,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:36" (1/1) ... [2020-09-21 11:18:36,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:36,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:36,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:36,581 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:36,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:36,642 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:36,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36 WrapperNode [2020-09-21 11:18:36,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:36,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:36,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:36,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:36,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36" (1/1) ... [2020-09-21 11:18:36,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36" (1/1) ... [2020-09-21 11:18:36,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36" (1/1) ... [2020-09-21 11:18:36,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36" (1/1) ... [2020-09-21 11:18:36,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36" (1/1) ... [2020-09-21 11:18:36,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36" (1/1) ... [2020-09-21 11:18:36,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36" (1/1) ... [2020-09-21 11:18:36,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:36,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:36,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:36,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:36,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:36,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:36,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:36,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 11:18:36,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-21 11:18:36,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-21 11:18:36,868 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-09-21 11:18:36,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 11:18:36,869 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-21 11:18:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:36,871 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-21 11:18:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-09-21 11:18:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:36,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:36,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:37,308 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:37,308 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-21 11:18:37,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:37 BoogieIcfgContainer [2020-09-21 11:18:37,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:37,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:37,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:37,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:37,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:36" (1/3) ... [2020-09-21 11:18:37,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b58560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:37, skipping insertion in model container [2020-09-21 11:18:37,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:36" (2/3) ... [2020-09-21 11:18:37,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b58560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:37, skipping insertion in model container [2020-09-21 11:18:37,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:37" (3/3) ... [2020-09-21 11:18:37,329 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-09-21 11:18:37,339 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:37,351 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:37,371 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:37,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:37,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:37,397 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:37,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:37,398 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:37,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:37,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:37,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-21 11:18:37,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:18:37,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:37,433 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] [2020-09-21 11:18:37,434 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:37,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:37,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1713992029, now seen corresponding path program 1 times [2020-09-21 11:18:37,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:37,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138164388] [2020-09-21 11:18:37,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:37,605 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:37,606 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:37,606 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:37,607 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:37,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:18:37,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:37,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:18:37,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:18:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:37,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:37,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:18:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:37,705 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:37,705 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:37,705 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:37,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:37,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:18:37,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:18:37,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:18:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:18:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:37,761 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:37,761 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:37,762 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:37,762 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:37,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:18:37,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:37,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:18:37,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:37,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:37,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:37,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:18:37,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:18:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:18:37,776 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:18:37,776 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:18:37,776 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:18:37,777 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:18:37,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:18:37,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:18:37,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:18:37,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:18:37,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:18:37,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:18:37,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:18:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:18:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:18:37,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138164388] [2020-09-21 11:18:37,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:18:37,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:18:37,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496316683] [2020-09-21 11:18:37,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:18:37,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:18:37,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:18:37,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:18:37,823 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-09-21 11:18:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:18:37,988 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-09-21 11:18:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:18:37,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-21 11:18:37,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:18:38,001 INFO L225 Difference]: With dead ends: 54 [2020-09-21 11:18:38,001 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 11:18:38,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:18:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 11:18:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 11:18:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 11:18:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-09-21 11:18:38,048 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 23 [2020-09-21 11:18:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:18:38,049 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-09-21 11:18:38,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:18:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-09-21 11:18:38,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:18:38,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:38,050 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] [2020-09-21 11:18:38,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:38,051 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:38,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:38,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1241118945, now seen corresponding path program 1 times [2020-09-21 11:18:38,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:38,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734548724] [2020-09-21 11:18:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:38,178 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:38,178 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:38,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:18:38,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:38 BoogieIcfgContainer [2020-09-21 11:18:38,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:38,209 INFO L168 Benchmark]: Toolchain (without parser) took 1929.95 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 111.3 MB in the end (delta: -8.4 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:38,211 INFO L168 Benchmark]: CDTParser took 0.87 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: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 11:18:38,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.77 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 91.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:38,213 INFO L168 Benchmark]: Boogie Preprocessor took 143.64 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 180.6 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:38,213 INFO L168 Benchmark]: RCFGBuilder took 525.61 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 159.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:38,214 INFO L168 Benchmark]: TraceAbstraction took 884.43 ms. Allocated memory is still 203.4 MB. Free memory was 158.6 MB in the beginning and 111.3 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:38,218 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 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: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 358.77 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 91.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.64 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 180.6 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 525.61 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 159.3 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 884.43 ms. Allocated memory is still 203.4 MB. Free memory was 158.6 MB in the beginning and 111.3 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 73]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68, overapproximation of bitwiseAnd at line 38. Possible FailurePath: [L68] double x = -1.0 / 0.0; [L69] CALL, EXPR fabs_double(x) [L45] __uint32_t high; [L47] ieee_double_shape_type gh_u; [L48] gh_u.value = (x) [L49] EXPR gh_u.parts.msw [L49] (high) = gh_u.parts.msw [L52] ieee_double_shape_type sh_u; [L53] sh_u.value = (x) [L54] sh_u.parts.msw = (high & 0x7fffffff) [L55] EXPR sh_u.value [L55] (x) = sh_u.value [L57] return x; [L69] RET, EXPR fabs_double(x) [L69] double res = fabs_double(x); [L72] CALL, EXPR isinf_double(res) [L31] __int32_t hx, lx; [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (x) [L35] EXPR ew_u.parts.msw [L35] (hx) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (lx) = ew_u.parts.lsw [L38] hx &= 0x7fffffff [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L40] hx = 0x7ff00000 - hx [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L72] RET, EXPR isinf_double(res) [L72] COND TRUE !isinf_double(res) [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 19 SDslu, 5 SDs, 0 SdLazy, 29 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1210 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...