/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_interval.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:05:12,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:05:12,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:05:12,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:05:12,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:05:12,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:05:12,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:05:12,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:05:12,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:05:12,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:05:12,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:05:12,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:05:12,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:05:12,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:05:12,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:05:12,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:05:12,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:05:12,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:05:12,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:05:12,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:05:12,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:05:12,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:05:12,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:05:12,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:05:12,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:05:12,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:05:12,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:05:12,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:05:12,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:05:12,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:05:12,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:05:12,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:05:12,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:05:12,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:05:12,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:05:12,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:05:12,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:05:12,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:05:12,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:05:12,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:05:12,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:05:12,259 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 [2020-10-29 09:05:12,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:05:12,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:05:12,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:05:12,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:05:12,294 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:05:12,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:05:12,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:05:12,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:05:12,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:05:12,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:05:12,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:05:12,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:05:12,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:05:12,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:05:12,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:05:12,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:05:12,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:05:12,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:05:12,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:05:12,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:05:12,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:05:12,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:05:12,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:05:12,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:05:12,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:05:12,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:05:12,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:05:12,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:05:12,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:05:12,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:05:12,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:05:12,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:05:12,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:05:12,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:05:12,716 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:05:12,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_interval.c [2020-10-29 09:05:12,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd6c99d30/5e2a954cdd784c81a60a2b0bc8f64b44/FLAG3e3f83e65 [2020-10-29 09:05:13,533 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:05:13,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/sqrt_Householder_interval.c [2020-10-29 09:05:13,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd6c99d30/5e2a954cdd784c81a60a2b0bc8f64b44/FLAG3e3f83e65 [2020-10-29 09:05:13,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd6c99d30/5e2a954cdd784c81a60a2b0bc8f64b44 [2020-10-29 09:05:13,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:05:13,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:05:13,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:05:13,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:05:13,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:05:13,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:05:13" (1/1) ... [2020-10-29 09:05:13,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0a5fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:13, skipping insertion in model container [2020-10-29 09:05:13,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:05:13" (1/1) ... [2020-10-29 09:05:13,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:05:13,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:05:14,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:05:14,136 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:05:14,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:05:14,174 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:05:14,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:14 WrapperNode [2020-10-29 09:05:14,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:05:14,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:05:14,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:05:14,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:05:14,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:14" (1/1) ... [2020-10-29 09:05:14,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:14" (1/1) ... [2020-10-29 09:05:14,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:14" (1/1) ... [2020-10-29 09:05:14,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:14" (1/1) ... [2020-10-29 09:05:14,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:14" (1/1) ... [2020-10-29 09:05:14,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:14" (1/1) ... [2020-10-29 09:05:14,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:14" (1/1) ... [2020-10-29 09:05:14,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:05:14,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:05:14,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:05:14,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:05:14,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:14" (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 [2020-10-29 09:05:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:05:14,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:05:14,298 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:05:14,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:05:14,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:05:14,298 INFO L138 BoogieDeclarations]: Found implementation of procedure SqrtR [2020-10-29 09:05:14,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:05:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:05:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:05:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:05:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:05:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-29 09:05:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:05:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:05:14,299 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2020-10-29 09:05:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:05:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:05:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:05:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:05:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:05:14,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:05:14,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:05:14,630 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:05:14,630 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:05:14,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:05:14 BoogieIcfgContainer [2020-10-29 09:05:14,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:05:14,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:05:14,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:05:14,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:05:14,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:05:13" (1/3) ... [2020-10-29 09:05:14,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f9e01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:05:14, skipping insertion in model container [2020-10-29 09:05:14,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:05:14" (2/3) ... [2020-10-29 09:05:14,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f9e01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:05:14, skipping insertion in model container [2020-10-29 09:05:14,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:05:14" (3/3) ... [2020-10-29 09:05:14,645 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_interval.c [2020-10-29 09:05:14,661 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:05:14,666 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:05:14,697 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:05:14,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:05:14,771 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:05:14,771 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:05:14,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:05:14,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:05:14,774 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:05:14,775 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:05:14,775 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:05:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-29 09:05:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:05:14,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:05:14,824 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] [2020-10-29 09:05:14,824 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:05:14,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:05:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash 878583779, now seen corresponding path program 1 times [2020-10-29 09:05:14,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:05:14,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242191647] [2020-10-29 09:05:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:05:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:15,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:15,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:05:15,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:15,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 09:05:15,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:15,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:15,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 09:05:15,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:15,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:05:15,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:05:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:05:15,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:05:15,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:05:15,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:05:15,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:05:15,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:05:15,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:05:15,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:05:15,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:05:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:05:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:05:15,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:05:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:05:15,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:05:15,340 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:235) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:557) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertLocalVarAssignemntPendingContext(AnnotateAndAssertCodeBlocks.java:169) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:120) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:295) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:206) ... 30 more [2020-10-29 09:05:15,346 INFO L168 Benchmark]: Toolchain (without parser) took 1477.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 111.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:05:15,347 INFO L168 Benchmark]: CDTParser took 1.57 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:05:15,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.89 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:05:15,349 INFO L168 Benchmark]: Boogie Preprocessor took 41.85 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:05:15,350 INFO L168 Benchmark]: RCFGBuilder took 414.32 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 99.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:05:15,351 INFO L168 Benchmark]: TraceAbstraction took 707.36 ms. Allocated memory is still 151.0 MB. Free memory was 98.7 MB in the beginning and 111.3 MB in the end (delta: -12.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:05:15,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.57 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 299.89 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.85 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 414.32 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 99.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 707.36 ms. Allocated memory is still 151.0 MB. Free memory was 98.7 MB in the beginning and 111.3 MB in the end (delta: -12.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:235) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...