/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/float_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:45:04,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:45:04,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:45:04,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:45:04,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:45:04,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:45:04,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:45:04,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:45:04,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:45:04,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:45:04,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:45:04,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:45:04,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:45:04,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:45:04,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:45:04,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:45:04,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:45:04,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:45:04,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:45:04,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:45:04,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:45:04,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:45:04,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:45:04,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:45:04,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:45:04,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:45:04,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:45:04,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:45:04,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:45:04,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:45:04,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:45:04,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:45:04,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:45:04,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:45:04,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:45:04,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:45:04,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:45:04,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:45:04,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:45:04,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:45:04,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:45:04,376 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 19:45:04,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:45:04,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:45:04,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:45:04,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:45:04,430 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:45:04,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:45:04,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:45:04,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:45:04,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:45:04,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:45:04,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:45:04,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:45:04,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:45:04,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:45:04,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:45:04,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:45:04,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:45:04,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:45:04,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:45:04,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:45:04,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:45:04,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:45:04,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:45:04,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:45:04,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:45:04,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:45:04,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:45:04,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:45:04,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:45:04,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:45:04,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:45:04,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:45:04,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:45:04,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:45:04,949 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:45:04,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-10-27 19:45:05,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f30eb6f7/2db6011a185140e9906fa5fcd66501df/FLAG6d14e3ddb [2020-10-27 19:45:05,746 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:45:05,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-10-27 19:45:05,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f30eb6f7/2db6011a185140e9906fa5fcd66501df/FLAG6d14e3ddb [2020-10-27 19:45:06,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f30eb6f7/2db6011a185140e9906fa5fcd66501df [2020-10-27 19:45:06,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:45:06,076 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:45:06,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:45:06,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:45:06,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:45:06,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c6cf48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06, skipping insertion in model container [2020-10-27 19:45:06,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:45:06,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:45:06,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:45:06,341 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:45:06,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:45:06,386 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:45:06,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06 WrapperNode [2020-10-27 19:45:06,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:45:06,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:45:06,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:45:06,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:45:06,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (1/1) ... [2020-10-27 19:45:06,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:45:06,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:45:06,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:45:06,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:45:06,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (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 19:45:06,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:45:06,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:45:06,516 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:45:06,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-27 19:45:06,516 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-10-27 19:45:06,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 19:45:06,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:45:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:45:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:45:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:45:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:45:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 19:45:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-27 19:45:06,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:45:06,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:45:06,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:45:06,518 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-10-27 19:45:06,518 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 19:45:06,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:45:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:45:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:45:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:45:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:45:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:45:07,194 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:45:07,194 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 19:45:07,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:07 BoogieIcfgContainer [2020-10-27 19:45:07,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:45:07,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:45:07,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:45:07,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:45:07,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:45:06" (1/3) ... [2020-10-27 19:45:07,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4657394b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:07, skipping insertion in model container [2020-10-27 19:45:07,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:06" (2/3) ... [2020-10-27 19:45:07,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4657394b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:07, skipping insertion in model container [2020-10-27 19:45:07,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:07" (3/3) ... [2020-10-27 19:45:07,211 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-10-27 19:45:07,228 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:45:07,234 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:45:07,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:45:07,295 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:45:07,295 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:45:07,296 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:45:07,296 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:45:07,296 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:45:07,296 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:45:07,296 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:45:07,297 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:45:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-27 19:45:07,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 19:45:07,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:07,332 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 19:45:07,333 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:07,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:07,343 INFO L82 PathProgramCache]: Analyzing trace with hash -892085035, now seen corresponding path program 1 times [2020-10-27 19:45:07,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:07,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152244101] [2020-10-27 19:45:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:07,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:07,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 19:45:07,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:07,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-27 19:45:07,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 19:45:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:45:07,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:08,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 19:45:08,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:08,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:45:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 19:45:08,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 19:45:08,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 19:45:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:08,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:45:08,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 19:45:08,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:45:08,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 19:45:08,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:45:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:08,248 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 19:45:08,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152244101] [2020-10-27 19:45:08,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:08,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:45:08,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465384448] [2020-10-27 19:45:08,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:45:08,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:08,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:45:08,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:45:08,280 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 5 states. [2020-10-27 19:45:08,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:08,569 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2020-10-27 19:45:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:45:08,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-27 19:45:08,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:08,581 INFO L225 Difference]: With dead ends: 84 [2020-10-27 19:45:08,582 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 19:45:08,586 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 19:45:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 19:45:08,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-27 19:45:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 19:45:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-27 19:45:08,637 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 23 [2020-10-27 19:45:08,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:08,638 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-27 19:45:08,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:45:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-27 19:45:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 19:45:08,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:08,641 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 19:45:08,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:45:08,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:08,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:08,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1307118978, now seen corresponding path program 1 times [2020-10-27 19:45:08,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:08,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028759460] [2020-10-27 19:45:08,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 19:45:08,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 19:45:08,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 19:45:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:08,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:08,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:08,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:45:08,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:08,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 19:45:08,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 19:45:08,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:08,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 19:45:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:08,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:08,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:08,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:08,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 19:45:08,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:08,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 19:45:08,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:08,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 19:45:08,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:09,015 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 19:45:09,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028759460] [2020-10-27 19:45:09,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:09,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:09,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995532991] [2020-10-27 19:45:09,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:09,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:09,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:09,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:09,020 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-27 19:45:09,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:09,263 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-27 19:45:09,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:09,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-27 19:45:09,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:09,269 INFO L225 Difference]: With dead ends: 61 [2020-10-27 19:45:09,270 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 19:45:09,272 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 19:45:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 19:45:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-27 19:45:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:45:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:45:09,302 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 24 [2020-10-27 19:45:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:09,305 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:45:09,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:45:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 19:45:09,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:09,309 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 19:45:09,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:45:09,309 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:09,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1931861714, now seen corresponding path program 1 times [2020-10-27 19:45:09,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:09,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871454343] [2020-10-27 19:45:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:09,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:09,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 19:45:09,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:09,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 19:45:09,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:09,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:09,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 19:45:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:09,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:09,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:09,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:09,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:45:09,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:09,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:09,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:45:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:09,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 19:45:09,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:09,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 19:45:09,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:09,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:09,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 19:45:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:09,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 19:45:09,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:09,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:09,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:45:09,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:09,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 19:45:09,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:09,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:45:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:09,722 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 19:45:09,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871454343] [2020-10-27 19:45:09,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:09,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:09,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961581843] [2020-10-27 19:45:09,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:09,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:09,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:09,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:09,725 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 19:45:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:09,899 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-27 19:45:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:09,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-27 19:45:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:09,901 INFO L225 Difference]: With dead ends: 65 [2020-10-27 19:45:09,902 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 19:45:09,902 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 19:45:09,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 19:45:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-27 19:45:09,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:45:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:45:09,913 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 25 [2020-10-27 19:45:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:09,913 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:45:09,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:45:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 19:45:09,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:09,915 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 19:45:09,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:45:09,915 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:09,916 INFO L82 PathProgramCache]: Analyzing trace with hash -222621062, now seen corresponding path program 1 times [2020-10-27 19:45:09,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:09,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593004628] [2020-10-27 19:45:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 19:45:10,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 19:45:10,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 19:45:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:10,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:10,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:45:10,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 19:45:10,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 19:45:10,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:45:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:45:10,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 19:45:10,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:10,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 19:45:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,201 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 19:45:10,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593004628] [2020-10-27 19:45:10,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:10,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:10,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011680769] [2020-10-27 19:45:10,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:10,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:10,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:10,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:10,205 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 19:45:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:10,417 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-27 19:45:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:10,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-27 19:45:10,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:10,421 INFO L225 Difference]: With dead ends: 69 [2020-10-27 19:45:10,422 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 19:45:10,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:45:10,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 19:45:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2020-10-27 19:45:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:45:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:45:10,438 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 26 [2020-10-27 19:45:10,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:10,438 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:45:10,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:45:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 19:45:10,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:10,443 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 19:45:10,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:45:10,443 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2070746802, now seen corresponding path program 1 times [2020-10-27 19:45:10,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:10,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553470491] [2020-10-27 19:45:10,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 19:45:10,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 19:45:10,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 19:45:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:45:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:45:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:45:10,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:45:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:10,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:45:10,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:45:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 19:45:10,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 19:45:10,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:10,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:45:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 19:45:10,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:45:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:45:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:45:10,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:45:10,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 19:45:10,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:45:10,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 19:45:10,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:45:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:45:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:45:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 19:45:10,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:45:10,754 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 19:45:10,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553470491] [2020-10-27 19:45:10,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:45:10,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:45:10,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426569630] [2020-10-27 19:45:10,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:45:10,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:45:10,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:45:10,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:45:10,757 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 19:45:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:45:10,904 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-27 19:45:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:45:10,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-27 19:45:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:45:10,906 INFO L225 Difference]: With dead ends: 65 [2020-10-27 19:45:10,906 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 19:45:10,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:45:10,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 19:45:10,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-27 19:45:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 19:45:10,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 19:45:10,915 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 27 [2020-10-27 19:45:10,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:45:10,916 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 19:45:10,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:45:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 19:45:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 19:45:10,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:10,917 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 19:45:10,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:45:10,918 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:10,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:10,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1941664083, now seen corresponding path program 1 times [2020-10-27 19:45:10,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:10,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507312353] [2020-10-27 19:45:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:45:10,934 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:45:10,935 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:45:10,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:45:10,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:45:10 BoogieIcfgContainer [2020-10-27 19:45:10,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:45:10,961 INFO L168 Benchmark]: Toolchain (without parser) took 4889.56 ms. Allocated memory was 125.8 MB in the beginning and 209.7 MB in the end (delta: 83.9 MB). Free memory was 101.3 MB in the beginning and 111.4 MB in the end (delta: -10.1 MB). Peak memory consumption was 74.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:10,962 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 125.8 MB. Free memory is still 87.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:45:10,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.74 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 90.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:10,964 INFO L168 Benchmark]: Boogie Preprocessor took 43.64 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 88.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:10,965 INFO L168 Benchmark]: RCFGBuilder took 764.40 ms. Allocated memory was 125.8 MB in the beginning and 174.1 MB in the end (delta: 48.2 MB). Free memory was 88.5 MB in the beginning and 152.4 MB in the end (delta: -63.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:10,966 INFO L168 Benchmark]: TraceAbstraction took 3758.23 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 152.3 MB in the beginning and 111.4 MB in the end (delta: 40.9 MB). Peak memory consumption was 77.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:10,969 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 125.8 MB. Free memory is still 87.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 306.74 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 90.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.64 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 88.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 764.40 ms. Allocated memory was 125.8 MB in the beginning and 174.1 MB in the end (delta: 48.2 MB). Free memory was 88.5 MB in the beginning and 152.4 MB in the end (delta: -63.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3758.23 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 152.3 MB in the beginning and 111.4 MB in the end (delta: 40.9 MB). Peak memory consumption was 77.1 MB. 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 someBinaryFLOATComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 76. Possible FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L77] CALL, EXPR fmax_float(x, y) [L46] CALL, EXPR __fpclassify_float(x) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] RET, EXPR __fpclassify_float(x) [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L77] RET, EXPR fmax_float(x, y) [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] CALL reach_error() [L3] __assert_fail("0", "float_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: 3.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 236 SDtfs, 50 SDslu, 525 SDs, 0 SdLazy, 347 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 10434 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...