/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=SHALLOWEST --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_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:44:00,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:44:00,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:44:00,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:44:00,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:44:00,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:44:00,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:44:00,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:44:00,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:44:00,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:44:00,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:44:00,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:44:00,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:44:00,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:44:00,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:44:00,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:44:00,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:44:00,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:44:00,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:44:00,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:44:00,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:44:00,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:44:00,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:44:00,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:44:00,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:44:00,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:44:00,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:44:00,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:44:00,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:44:00,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:44:00,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:44:00,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:44:00,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:44:00,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:44:00,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:44:00,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:44:00,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:44:00,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:44:00,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:44:00,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:44:00,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:44:00,764 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 23:44:00,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:44:00,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:44:00,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:44:00,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:44:00,818 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:44:00,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:44:00,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:44:00,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:44:00,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:44:00,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:44:00,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:44:00,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:44:00,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:44:00,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:44:00,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:44:00,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:44:00,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:44:00,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:44:00,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:44:00,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:44:00,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:44:00,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:44:00,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:44:00,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:44:00,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:44:00,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:44:00,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:44:00,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:44:00,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:44:00,824 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:44:01,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:44:01,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:44:01,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:44:01,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:44:01,322 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:44:01,323 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-09-24 23:44:01,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/216417997/047e84c864c549fe84b1ea558ec46325/FLAG5f6026920 [2020-09-24 23:44:01,939 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:44:01,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-09-24 23:44:01,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/216417997/047e84c864c549fe84b1ea558ec46325/FLAG5f6026920 [2020-09-24 23:44:02,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/216417997/047e84c864c549fe84b1ea558ec46325 [2020-09-24 23:44:02,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:44:02,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:44:02,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:02,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:44:02,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:44:02,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:02" (1/1) ... [2020-09-24 23:44:02,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02, skipping insertion in model container [2020-09-24 23:44:02,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:02" (1/1) ... [2020-09-24 23:44:02,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:44:02,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:44:02,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:02,668 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:44:02,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:02,846 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:44:02,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02 WrapperNode [2020-09-24 23:44:02,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:02,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:44:02,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:44:02,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:44:02,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02" (1/1) ... [2020-09-24 23:44:02,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02" (1/1) ... [2020-09-24 23:44:02,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02" (1/1) ... [2020-09-24 23:44:02,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02" (1/1) ... [2020-09-24 23:44:02,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02" (1/1) ... [2020-09-24 23:44:02,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02" (1/1) ... [2020-09-24 23:44:02,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02" (1/1) ... [2020-09-24 23:44:02,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:44:02,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:44:02,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:44:02,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:44:02,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02" (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 23:44:02,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:44:02,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:44:02,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 23:44:02,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-09-24 23:44:02,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:44:02,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:44:02,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 23:44:02,984 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 23:44:02,984 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-09-24 23:44:02,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:44:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 23:44:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:44:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:44:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:44:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 23:44:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:44:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:44:02,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:44:03,576 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:44:03,577 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-24 23:44:03,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:03 BoogieIcfgContainer [2020-09-24 23:44:03,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:44:03,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:44:03,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:44:03,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:44:03,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:44:02" (1/3) ... [2020-09-24 23:44:03,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5e2956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:03, skipping insertion in model container [2020-09-24 23:44:03,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:02" (2/3) ... [2020-09-24 23:44:03,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5e2956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:03, skipping insertion in model container [2020-09-24 23:44:03,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:03" (3/3) ... [2020-09-24 23:44:03,594 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2020-09-24 23:44:03,606 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:44:03,618 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:44:03,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:44:03,676 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:44:03,676 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:44:03,676 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:44:03,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:44:03,677 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:44:03,677 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:44:03,677 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:44:03,677 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:44:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-09-24 23:44:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 23:44:03,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:03,718 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] [2020-09-24 23:44:03,718 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:03,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:03,727 INFO L82 PathProgramCache]: Analyzing trace with hash 328834373, now seen corresponding path program 1 times [2020-09-24 23:44:03,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:03,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962947994] [2020-09-24 23:44:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:04,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:04,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 23:44:04,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:04,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 23:44:04,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 23:44:04,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:04,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:44:04,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:04,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:04,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:04,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:44:04,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:04,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 23:44:04,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:04,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:04,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:04,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:44:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:04,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:04,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:44:04,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 23:44:04,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 23:44:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:04,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-24 23:44:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:04,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:04,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:04,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:44:04,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:04,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:44:04,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:04,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 23:44:04,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:04,199 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 23:44:04,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962947994] [2020-09-24 23:44:04,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:04,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:44:04,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776320440] [2020-09-24 23:44:04,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:44:04,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:04,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:44:04,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:44:04,228 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 4 states. [2020-09-24 23:44:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:04,698 INFO L93 Difference]: Finished difference Result 276 states and 332 transitions. [2020-09-24 23:44:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:44:04,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-24 23:44:04,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:04,718 INFO L225 Difference]: With dead ends: 276 [2020-09-24 23:44:04,718 INFO L226 Difference]: Without dead ends: 144 [2020-09-24 23:44:04,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:44:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-24 23:44:04,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-24 23:44:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-24 23:44:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 163 transitions. [2020-09-24 23:44:04,789 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 163 transitions. Word has length 41 [2020-09-24 23:44:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:04,790 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 163 transitions. [2020-09-24 23:44:04,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:44:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 163 transitions. [2020-09-24 23:44:04,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 23:44:04,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:04,793 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] [2020-09-24 23:44:04,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:44:04,793 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:04,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:04,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1352742449, now seen corresponding path program 1 times [2020-09-24 23:44:04,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:04,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668767426] [2020-09-24 23:44:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:44:04,841 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:44:04,845 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:44:04,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:44:04,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:44:04 BoogieIcfgContainer [2020-09-24 23:44:04,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:44:04,891 INFO L168 Benchmark]: Toolchain (without parser) took 2595.67 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 102.5 MB in the beginning and 169.5 MB in the end (delta: -67.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:04,901 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 23:44:04,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.05 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 180.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:04,902 INFO L168 Benchmark]: Boogie Preprocessor took 58.79 ms. Allocated memory is still 204.5 MB. Free memory was 180.6 MB in the beginning and 178.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:04,906 INFO L168 Benchmark]: RCFGBuilder took 677.30 ms. Allocated memory is still 204.5 MB. Free memory was 178.8 MB in the beginning and 143.0 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:04,908 INFO L168 Benchmark]: TraceAbstraction took 1301.90 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 142.4 MB in the beginning and 169.5 MB in the end (delta: -27.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:04,918 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 548.05 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 180.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.79 ms. Allocated memory is still 204.5 MB. Free memory was 180.6 MB in the beginning and 178.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 677.30 ms. Allocated memory is still 204.5 MB. Free memory was 178.8 MB in the beginning and 143.0 MB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1301.90 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 142.4 MB in the beginning and 169.5 MB in the end (delta: -27.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 145]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L20] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L139] double x = 0.0 / 0.0; [L141] CALL, EXPR __ieee754_sqrt(x) [L23] double z; [L24] __int32_t sign = 0x80000000; [L25] __uint32_t r, t1, s1, ix1, q1; [L26] __int32_t ix0, s0, q, m, t, i; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (ix0) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (ix1) = ew_u.parts.lsw [L35] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L36] return x * x + x; [L141] RET, EXPR __ieee754_sqrt(x) [L141] double res = __ieee754_sqrt(x); [L144] CALL, EXPR isnan_double(res) [L18] return x != x; [L144] RET, EXPR isnan_double(res) [L144] COND TRUE !isnan_double(res) [L145] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 151 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 37 SDslu, 130 SDs, 0 SdLazy, 165 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 2680 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...