/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:16:16,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:16:16,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:16:16,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:16:16,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:16:16,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:16:16,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:16:16,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:16:16,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:16:16,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:16:16,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:16:16,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:16:16,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:16:16,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:16:16,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:16:16,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:16:16,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:16:16,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:16:16,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:16:16,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:16:16,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:16:16,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:16:16,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:16:16,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:16:16,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:16:16,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:16:16,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:16:16,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:16:16,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:16:16,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:16:16,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:16:16,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:16:16,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:16:16,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:16:16,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:16:16,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:16:16,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:16:16,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:16:16,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:16:16,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:16:16,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:16:16,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:16:17,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:16:17,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:16:17,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:16:17,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:16:17,040 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:16:17,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:16:17,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:16:17,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:16:17,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:16:17,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:16:17,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:16:17,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:16:17,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:16:17,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:16:17,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:16:17,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:16:17,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:16:17,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:16:17,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:16:17,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:16:17,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:16:17,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:16:17,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:16:17,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:16:17,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:16:17,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:16:17,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:16:17,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:16:17,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:16:17,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:16:17,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:16:17,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:16:17,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:16:17,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:16:17,428 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:16:17,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2020-10-13 10:16:17,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/686b964bb/21e0d095327344f3b8bd7d9328fc04e6/FLAG9795c59ac [2020-10-13 10:16:18,010 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:16:18,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2020-10-13 10:16:18,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/686b964bb/21e0d095327344f3b8bd7d9328fc04e6/FLAG9795c59ac [2020-10-13 10:16:18,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/686b964bb/21e0d095327344f3b8bd7d9328fc04e6 [2020-10-13 10:16:18,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:16:18,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:16:18,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:16:18,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:16:18,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:16:18,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:16:18" (1/1) ... [2020-10-13 10:16:18,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e3a048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18, skipping insertion in model container [2020-10-13 10:16:18,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:16:18" (1/1) ... [2020-10-13 10:16:18,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:16:18,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:16:18,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:16:18,650 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:16:18,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:16:18,788 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:16:18,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18 WrapperNode [2020-10-13 10:16:18,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:16:18,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:16:18,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:16:18,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:16:18,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18" (1/1) ... [2020-10-13 10:16:18,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18" (1/1) ... [2020-10-13 10:16:18,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18" (1/1) ... [2020-10-13 10:16:18,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18" (1/1) ... [2020-10-13 10:16:18,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18" (1/1) ... [2020-10-13 10:16:18,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18" (1/1) ... [2020-10-13 10:16:18,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18" (1/1) ... [2020-10-13 10:16:18,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:16:18,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:16:18,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:16:18,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:16:18,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:16:18,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:16:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:16:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 10:16:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:16:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:16:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-13 10:16:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:16:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 10:16:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:16:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2020-10-13 10:16:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:16:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:16:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:16:19,211 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:16:19,212 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 10:16:19,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:16:19 BoogieIcfgContainer [2020-10-13 10:16:19,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:16:19,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:16:19,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:16:19,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:16:19,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:16:18" (1/3) ... [2020-10-13 10:16:19,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df521a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:16:19, skipping insertion in model container [2020-10-13 10:16:19,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:16:18" (2/3) ... [2020-10-13 10:16:19,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df521a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:16:19, skipping insertion in model container [2020-10-13 10:16:19,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:16:19" (3/3) ... [2020-10-13 10:16:19,229 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c.p+cfa-reducer.c [2020-10-13 10:16:19,244 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:16:19,254 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:16:19,300 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:16:19,384 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:16:19,385 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:16:19,385 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:16:19,385 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:16:19,386 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:16:19,386 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:16:19,386 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:16:19,386 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:16:19,413 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-13 10:16:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 10:16:19,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:16:19,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:16:19,424 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:16:19,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:16:19,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1862153413, now seen corresponding path program 1 times [2020-10-13 10:16:19,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:16:19,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152489527] [2020-10-13 10:16:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:16:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:16:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:16:19,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:16:19,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 10:16:19,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:16:19,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 10:16:19,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:16:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:16:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:16:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:16:19,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:16:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:16:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:16:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:16:19,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:16:19,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:16:19,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:16:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:16:19,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:16:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:16:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:16:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:16:19,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:16:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:16:19,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152489527] [2020-10-13 10:16:19,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:16:19,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:16:19,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016560247] [2020-10-13 10:16:19,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:16:19,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:16:19,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:16:19,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:16:19,928 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-10-13 10:16:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:16:20,219 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-10-13 10:16:20,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:16:20,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-13 10:16:20,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:16:20,237 INFO L225 Difference]: With dead ends: 70 [2020-10-13 10:16:20,237 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 10:16:20,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:16:20,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 10:16:20,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 27. [2020-10-13 10:16:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 10:16:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-13 10:16:20,301 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 18 [2020-10-13 10:16:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:16:20,302 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-13 10:16:20,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:16:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-10-13 10:16:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 10:16:20,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:16:20,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:16:20,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:16:20,305 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:16:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:16:20,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1878210762, now seen corresponding path program 1 times [2020-10-13 10:16:20,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:16:20,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367003212] [2020-10-13 10:16:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:16:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:16:20,326 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:16:20,326 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:16:20,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:16:20,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:16:20 BoogieIcfgContainer [2020-10-13 10:16:20,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:16:20,362 INFO L168 Benchmark]: Toolchain (without parser) took 2011.80 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 104.0 MB in the beginning and 115.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:16:20,364 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:16:20,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.51 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 183.6 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:16:20,367 INFO L168 Benchmark]: Boogie Preprocessor took 44.82 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 181.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:16:20,368 INFO L168 Benchmark]: RCFGBuilder took 382.79 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 165.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:16:20,370 INFO L168 Benchmark]: TraceAbstraction took 1139.89 ms. Allocated memory is still 204.5 MB. Free memory was 165.7 MB in the beginning and 115.7 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:16:20,381 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 438.51 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 183.6 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.82 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 181.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.79 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 165.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1139.89 ms. Allocated memory is still 204.5 MB. Free memory was 165.7 MB in the beginning and 115.7 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 99]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 40, overapproximation of someBinaryArithmeticDOUBLEoperation at line 83. Possible FailurePath: [L1] int __return_main; [L9] double _EPS = 0.0000010; [L12] double __return_125; [L15] double main__d; [L16] double main__r; [L17] main__d = 1.0 [L19] COND TRUE main__d <= 20.0 [L22] double __tmp_1; [L23] __tmp_1 = main__d [L24] double SqrtR__Input; [L25] SqrtR__Input = __tmp_1 [L26] double SqrtR__xn; [L27] double SqrtR__xnp1; [L28] double SqrtR__residu; [L29] double SqrtR__lsup; [L30] double SqrtR__linf; [L31] int SqrtR__i; [L32] int SqrtR__cond; [L33] COND TRUE SqrtR__Input <= 1.0 [L35] SqrtR__xn = 1.0 [L37] SqrtR__xnp1 = SqrtR__xn [L38] SqrtR__residu = (2.0 * _EPS) * (SqrtR__xn + SqrtR__xnp1) [L39] SqrtR__lsup = _EPS * (SqrtR__xn + SqrtR__xnp1) [L40] SqrtR__linf = -SqrtR__lsup [L41] int SqrtR____CPAchecker_TMP_0; [L42] COND FALSE !(SqrtR__residu > SqrtR__lsup) [L124] COND FALSE !(SqrtR__residu < SqrtR__linf) [L130] SqrtR____CPAchecker_TMP_0 = 0 [L47] SqrtR__cond = SqrtR____CPAchecker_TMP_0 [L48] SqrtR__i = 0 [L50] COND FALSE !(!(SqrtR__cond == 0)) [L83] __return_125 = 1.0 / SqrtR__xnp1 [L84] main__r = __return_125 [L85] int main____CPAchecker_TMP_0; [L86] COND FALSE !(main__r >= 1.0) [L112] main____CPAchecker_TMP_0 = 0 [L93] int __tmp_2; [L94] __tmp_2 = main____CPAchecker_TMP_0 [L95] int __VERIFIER_assert__cond; [L96] __VERIFIER_assert__cond = __tmp_2 [L97] COND TRUE __VERIFIER_assert__cond == 0 [L99] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 67 SDslu, 35 SDs, 0 SdLazy, 93 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 29 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 510 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...