/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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_1072d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:30:13,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:30:13,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:30:13,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:30:13,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:30:13,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:30:13,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:30:13,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:30:13,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:30:13,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:30:13,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:30:13,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:30:13,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:30:13,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:30:13,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:30:13,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:30:13,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:30:13,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:30:13,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:30:13,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:30:13,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:30:13,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:30:13,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:30:13,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:30:13,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:30:13,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:30:13,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:30:13,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:30:13,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:30:13,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:30:13,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:30:13,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:30:13,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:30:13,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:30:13,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:30:13,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:30:13,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:30:13,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:30:13,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:30:13,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:30:13,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:30:13,760 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 [2020-09-24 21:30:13,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:30:13,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:30:13,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:30:13,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:30:13,817 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:30:13,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:30:13,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:30:13,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:30:13,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:30:13,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:30:13,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:30:13,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:30:13,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:30:13,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:30:13,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:30:13,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:30:13,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:30:13,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:30:13,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:30:13,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:30:13,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:30:13,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:30:13,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:30:13,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:30:13,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:30:13,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:30:13,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:30:13,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:30:13,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:30:13,824 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:30:14,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:30:14,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:30:14,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:30:14,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:30:14,414 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:30:14,415 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-09-24 21:30:14,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c2b8924e/c1b8a9f98df14fd7968813badb6786df/FLAG9dace8535 [2020-09-24 21:30:15,073 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:30:15,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-09-24 21:30:15,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c2b8924e/c1b8a9f98df14fd7968813badb6786df/FLAG9dace8535 [2020-09-24 21:30:15,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c2b8924e/c1b8a9f98df14fd7968813badb6786df [2020-09-24 21:30:15,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:30:15,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:30:15,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:15,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:30:15,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:30:15,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:15" (1/1) ... [2020-09-24 21:30:15,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27abfae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15, skipping insertion in model container [2020-09-24 21:30:15,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:30:15" (1/1) ... [2020-09-24 21:30:15,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:30:15,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:30:15,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:15,733 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:30:15,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:30:15,802 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:30:15,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15 WrapperNode [2020-09-24 21:30:15,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:30:15,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:30:15,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:30:15,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:30:15,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15" (1/1) ... [2020-09-24 21:30:15,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15" (1/1) ... [2020-09-24 21:30:15,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15" (1/1) ... [2020-09-24 21:30:15,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15" (1/1) ... [2020-09-24 21:30:15,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15" (1/1) ... [2020-09-24 21:30:15,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15" (1/1) ... [2020-09-24 21:30:15,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15" (1/1) ... [2020-09-24 21:30:15,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:30:15,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:30:15,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:30:15,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:30:15,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15" (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 [2020-09-24 21:30:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:30:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:30:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 21:30:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-09-24 21:30:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-24 21:30:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:30:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:30:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 21:30:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-09-24 21:30:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:30:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 21:30:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:30:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:30:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:30:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 21:30:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-24 21:30:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:30:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:30:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:30:16,530 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:30:16,531 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-24 21:30:16,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:16 BoogieIcfgContainer [2020-09-24 21:30:16,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:30:16,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:30:16,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:30:16,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:30:16,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:30:15" (1/3) ... [2020-09-24 21:30:16,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60aebb8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:16, skipping insertion in model container [2020-09-24 21:30:16,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:30:15" (2/3) ... [2020-09-24 21:30:16,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60aebb8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:30:16, skipping insertion in model container [2020-09-24 21:30:16,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:30:16" (3/3) ... [2020-09-24 21:30:16,548 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-09-24 21:30:16,560 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:30:16,571 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:30:16,594 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:30:16,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:30:16,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:30:16,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:30:16,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:30:16,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:30:16,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:30:16,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:30:16,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:30:16,651 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-09-24 21:30:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 21:30:16,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:16,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:16,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:16,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1396348261, now seen corresponding path program 1 times [2020-09-24 21:30:16,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:16,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530259728] [2020-09-24 21:30:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:16,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:16,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:16,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:17,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:17,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 21:30:17,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:30:17,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-24 21:30:17,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:30:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 21:30:17,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:30:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:17,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:17,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:17,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:30:17,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:30:17,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:30:17,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:17,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:30:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:17,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 21:30:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:17,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:17,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:17,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:30:17,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:17,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 21:30:17,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:17,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:17,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:30:17,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:17,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:30:17,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 21:30:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:30:17,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:17,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:30:17,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:30:17,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 21:30:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:30:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:30:17,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:30:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:30:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 21:30:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:30:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:30:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:30:17,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530259728] [2020-09-24 21:30:17,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:30:17,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:30:17,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931249322] [2020-09-24 21:30:17,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:30:17,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:30:17,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:30:17,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:30:17,626 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-09-24 21:30:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:30:18,036 INFO L93 Difference]: Finished difference Result 213 states and 242 transitions. [2020-09-24 21:30:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:30:18,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-24 21:30:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:30:18,060 INFO L225 Difference]: With dead ends: 213 [2020-09-24 21:30:18,060 INFO L226 Difference]: Without dead ends: 107 [2020-09-24 21:30:18,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:30:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-24 21:30:18,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-24 21:30:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 21:30:18,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2020-09-24 21:30:18,169 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 40 [2020-09-24 21:30:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:30:18,174 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2020-09-24 21:30:18,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:30:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2020-09-24 21:30:18,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-24 21:30:18,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:30:18,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:30:18,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:30:18,182 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:30:18,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:30:18,183 INFO L82 PathProgramCache]: Analyzing trace with hash -247930506, now seen corresponding path program 1 times [2020-09-24 21:30:18,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:30:18,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207788337] [2020-09-24 21:30:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:30:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:30:18,350 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:30:18,356 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:30:18,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:30:18,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:30:18 BoogieIcfgContainer [2020-09-24 21:30:18,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:30:18,418 INFO L168 Benchmark]: Toolchain (without parser) took 2983.34 ms. Allocated memory was 142.1 MB in the beginning and 233.3 MB in the end (delta: 91.2 MB). Free memory was 105.0 MB in the beginning and 169.0 MB in the end (delta: -63.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:18,420 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-24 21:30:18,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.19 ms. Allocated memory is still 142.1 MB. Free memory was 104.2 MB in the beginning and 93.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:18,423 INFO L168 Benchmark]: Boogie Preprocessor took 144.99 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 93.0 MB in the beginning and 179.9 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:18,424 INFO L168 Benchmark]: RCFGBuilder took 589.26 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 149.6 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:18,426 INFO L168 Benchmark]: TraceAbstraction took 1872.83 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 149.6 MB in the beginning and 169.0 MB in the end (delta: -19.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:30:18,438 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.19 ms. Allocated memory is still 142.1 MB. Free memory was 104.2 MB in the beginning and 93.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.99 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 93.0 MB in the beginning and 179.9 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 589.26 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 149.6 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1872.83 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 149.6 MB in the beginning and 169.0 MB in the end (delta: -19.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = -1.0 / 0.0; [L85] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] RET, EXPR trunc_double(x) [L85] double res = trunc_double(x); [L88] CALL, EXPR isinf_double(res) [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] RET, EXPR isinf_double(res) [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 19 SDslu, 69 SDs, 0 SdLazy, 139 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred 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, 0.7s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 2808 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...