/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=DEEPEST --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-newlib/double_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:43:35,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:43:35,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:43:35,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:43:35,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:43:35,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:43:35,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:43:35,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:43:35,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:43:35,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:43:35,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:43:35,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:43:35,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:43:35,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:43:35,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:43:35,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:43:35,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:43:35,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:43:35,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:43:35,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:43:35,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:43:35,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:43:35,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:43:35,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:43:35,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:43:35,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:43:35,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:43:35,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:43:35,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:43:35,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:43:35,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:43:35,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:43:35,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:43:35,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:43:35,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:43:35,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:43:35,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:43:35,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:43:35,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:43:35,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:43:35,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:43:35,446 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 [2020-10-27 19:43:35,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:43:35,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:43:35,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:43:35,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:43:35,500 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:43:35,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:43:35,500 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:43:35,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:43:35,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:43:35,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:43:35,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:43:35,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:43:35,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:43:35,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:43:35,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:43:35,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:43:35,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:43:35,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:43:35,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:43:35,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:43:35,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:43:35,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:43:35,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:43:35,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:43:35,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:43:35,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:43:35,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:43:35,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:43:35,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:43:35,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:43:35,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:43:35,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:43:35,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:43:35,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:43:35,930 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:43:35,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-10-27 19:43:36,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/619c7b26a/8a232449ba1a481989e172a8aabc52f8/FLAG2f435b90a [2020-10-27 19:43:36,543 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:43:36,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-10-27 19:43:36,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/619c7b26a/8a232449ba1a481989e172a8aabc52f8/FLAG2f435b90a [2020-10-27 19:43:36,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/619c7b26a/8a232449ba1a481989e172a8aabc52f8 [2020-10-27 19:43:36,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:43:36,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:43:36,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:43:36,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:43:36,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:43:36,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:36" (1/1) ... [2020-10-27 19:43:36,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d7ca83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:36, skipping insertion in model container [2020-10-27 19:43:36,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:36" (1/1) ... [2020-10-27 19:43:36,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:43:36,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:43:37,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:43:37,206 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:43:37,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:43:37,292 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:43:37,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:37 WrapperNode [2020-10-27 19:43:37,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:43:37,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:43:37,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:43:37,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:43:37,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:37" (1/1) ... [2020-10-27 19:43:37,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:37" (1/1) ... [2020-10-27 19:43:37,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:37" (1/1) ... [2020-10-27 19:43:37,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:37" (1/1) ... [2020-10-27 19:43:37,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:37" (1/1) ... [2020-10-27 19:43:37,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:37" (1/1) ... [2020-10-27 19:43:37,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:37" (1/1) ... [2020-10-27 19:43:37,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:43:37,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:43:37,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:43:37,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:43:37,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:37" (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 [2020-10-27 19:43:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:43:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:43:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:43:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-27 19:43:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-27 19:43:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-27 19:43:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:43:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:43:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:43:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:43:37,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:43:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 19:43:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-27 19:43:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:43:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:43:37,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:43:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-27 19:43:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-27 19:43:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:43:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:43:37,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:43:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:43:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:43:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:43:37,890 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:43:37,891 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 19:43:37,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:37 BoogieIcfgContainer [2020-10-27 19:43:37,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:43:37,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:43:37,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:43:37,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:43:37,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:43:36" (1/3) ... [2020-10-27 19:43:37,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455b38d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:37, skipping insertion in model container [2020-10-27 19:43:37,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:37" (2/3) ... [2020-10-27 19:43:37,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@455b38d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:37, skipping insertion in model container [2020-10-27 19:43:37,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:37" (3/3) ... [2020-10-27 19:43:37,903 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-10-27 19:43:37,916 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:43:37,921 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:43:37,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:43:37,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:43:37,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:43:37,996 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:43:37,996 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:43:37,996 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:43:37,997 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:43:37,997 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:43:37,997 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:43:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-27 19:43:38,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 19:43:38,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:38,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:43:38,035 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:38,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1163153451, now seen corresponding path program 1 times [2020-10-27 19:43:38,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:38,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148751509] [2020-10-27 19:43:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:38,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:38,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:38,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 19:43:38,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:43:38,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-27 19:43:38,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 19:43:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:43:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:43:38,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:43:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:38,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:38,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:38,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:43:38,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:38,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:43:38,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:43:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:38,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:43:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:38,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:38,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:38,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 19:43:38,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:43:38,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 19:43:38,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:38,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 19:43:38,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:43:38,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:38,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:43:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:38,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:39,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:39,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:39,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:43:39,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:43:39,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 19:43:39,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:43:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:43:39,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148751509] [2020-10-27 19:43:39,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:43:39,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:43:39,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696516467] [2020-10-27 19:43:39,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:43:39,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:43:39,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:43:39,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:43:39,065 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 5 states. [2020-10-27 19:43:39,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:43:39,344 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2020-10-27 19:43:39,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:43:39,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-27 19:43:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:43:39,356 INFO L225 Difference]: With dead ends: 84 [2020-10-27 19:43:39,356 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 19:43:39,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:43:39,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 19:43:39,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-27 19:43:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 19:43:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-27 19:43:39,407 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 23 [2020-10-27 19:43:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:43:39,407 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-27 19:43:39,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:43:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-27 19:43:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 19:43:39,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:39,410 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] [2020-10-27 19:43:39,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:43:39,411 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:39,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:39,412 INFO L82 PathProgramCache]: Analyzing trace with hash 51245620, now seen corresponding path program 1 times [2020-10-27 19:43:39,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:39,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260547192] [2020-10-27 19:43:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:39,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 19:43:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 19:43:39,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 19:43:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:43:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:39,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:43:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:39,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:39,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:39,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:43:39,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:39,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:43:39,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:43:39,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:39,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:39,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:43:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:39,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:39,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:39,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 19:43:39,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 19:43:39,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 19:43:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:43:39,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:39,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:43:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:39,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:39,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:39,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:43:39,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 19:43:39,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:43:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:43:39,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:43:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:43:39,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260547192] [2020-10-27 19:43:39,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:43:39,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:43:39,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159638145] [2020-10-27 19:43:39,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:43:39,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:43:39,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:43:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:43:39,901 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-27 19:43:40,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:43:40,149 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-27 19:43:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:43:40,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-27 19:43:40,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:43:40,153 INFO L225 Difference]: With dead ends: 61 [2020-10-27 19:43:40,153 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 19:43:40,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:43:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 19:43:40,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-27 19:43:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:43:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:43:40,168 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 24 [2020-10-27 19:43:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:43:40,169 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:43:40,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:43:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:43:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 19:43:40,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:40,170 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] [2020-10-27 19:43:40,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:43:40,171 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:40,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:40,171 INFO L82 PathProgramCache]: Analyzing trace with hash -2031925102, now seen corresponding path program 1 times [2020-10-27 19:43:40,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:40,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891342652] [2020-10-27 19:43:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:40,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:40,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 19:43:40,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 19:43:40,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 19:43:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:43:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:43:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:40,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:40,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:43:40,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:43:40,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:43:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:40,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:43:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:40,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:40,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:40,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 19:43:40,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 19:43:40,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 19:43:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:43:40,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 19:43:40,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:43:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:40,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:40,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:43:40,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:40,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 19:43:40,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:43:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:43:40,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:43:40,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891342652] [2020-10-27 19:43:40,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:43:40,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:43:40,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776165818] [2020-10-27 19:43:40,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:43:40,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:43:40,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:43:40,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:43:40,574 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 19:43:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:43:40,880 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-27 19:43:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:43:40,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-27 19:43:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:43:40,882 INFO L225 Difference]: With dead ends: 65 [2020-10-27 19:43:40,882 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 19:43:40,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:43:40,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 19:43:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-27 19:43:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:43:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:43:40,896 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 25 [2020-10-27 19:43:40,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:43:40,896 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:43:40,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:43:40,897 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:43:40,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 19:43:40,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:40,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:43:40,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:43:40,898 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:40,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:40,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1669377168, now seen corresponding path program 1 times [2020-10-27 19:43:40,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:40,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206047110] [2020-10-27 19:43:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:41,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:41,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 19:43:41,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:41,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 19:43:41,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 19:43:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:43:41,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:43:41,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:43:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:41,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:41,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:43:41,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:41,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:43:41,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:43:41,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:43:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:43:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:41,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:43:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:41,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:41,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:41,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 19:43:41,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:41,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 19:43:41,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:41,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:41,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:43:41,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:43:41,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:41,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:43:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:43:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:43:41,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:43:41,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:43:41,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:43:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:43:41,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:43:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:43:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:43:41,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 19:43:41,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:43:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:43:41,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206047110] [2020-10-27 19:43:41,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:43:41,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:43:41,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340293003] [2020-10-27 19:43:41,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:43:41,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:43:41,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:43:41,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:43:41,288 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 19:43:41,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:43:41,493 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-27 19:43:41,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:43:41,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-27 19:43:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:43:41,495 INFO L225 Difference]: With dead ends: 69 [2020-10-27 19:43:41,495 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 19:43:41,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:43:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 19:43:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2020-10-27 19:43:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:43:41,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:43:41,519 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 26 [2020-10-27 19:43:41,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:43:41,520 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:43:41,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:43:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:43:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 19:43:41,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:43:41,523 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] [2020-10-27 19:43:41,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:43:41,523 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:43:41,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:43:41,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1625087789, now seen corresponding path program 1 times [2020-10-27 19:43:41,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:43:41,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001946197] [2020-10-27 19:43:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:43:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:43:41,557 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:43:41,558 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:43:41,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:43:41,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:43:41 BoogieIcfgContainer [2020-10-27 19:43:41,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:43:41,587 INFO L168 Benchmark]: Toolchain (without parser) took 4688.92 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 114.7 MB in the beginning and 163.6 MB in the end (delta: -48.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:43:41,588 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 159.4 MB. Free memory was 131.2 MB in the beginning and 131.1 MB in the end (delta: 97.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:43:41,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.53 ms. Allocated memory is still 159.4 MB. Free memory was 142.2 MB in the beginning and 131.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:41,592 INFO L168 Benchmark]: Boogie Preprocessor took 101.57 ms. Allocated memory is still 159.4 MB. Free memory was 131.2 MB in the beginning and 140.8 MB in the end (delta: -9.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:41,594 INFO L168 Benchmark]: RCFGBuilder took 494.16 ms. Allocated memory is still 159.4 MB. Free memory was 140.8 MB in the beginning and 121.2 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:43:41,595 INFO L168 Benchmark]: TraceAbstraction took 3689.21 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 120.5 MB in the beginning and 163.6 MB in the end (delta: -43.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:43:41,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 159.4 MB. Free memory was 131.2 MB in the beginning and 131.1 MB in the end (delta: 97.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 375.53 ms. Allocated memory is still 159.4 MB. Free memory was 142.2 MB in the beginning and 131.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 101.57 ms. Allocated memory is still 159.4 MB. Free memory was 131.2 MB in the beginning and 140.8 MB in the end (delta: -9.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 494.16 ms. Allocated memory is still 159.4 MB. Free memory was 140.8 MB in the beginning and 121.2 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3689.21 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 120.5 MB in the beginning and 163.6 MB in the end (delta: -43.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: 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 82. Possible FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; [L83] CALL, EXPR fmax_double(x, y) [L54] CALL, EXPR __fpclassify_double(x) [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] RET, EXPR __fpclassify_double(x) [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] RET, EXPR fmax_double(x, y) [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 192 SDtfs, 40 SDslu, 420 SDs, 0 SdLazy, 279 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 8146 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...