/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=SHALLOWEST --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_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:04:11,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:11,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:11,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:11,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:11,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:11,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:11,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:11,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:11,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:11,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:11,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:11,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:11,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:11,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:11,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:11,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:11,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:11,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:11,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:11,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:11,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:11,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:11,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:11,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:11,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:11,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:11,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:11,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:11,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:04:11,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:04:11,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:04:11,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:04:11,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:04:11,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:04:11,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:04:11,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:04:11,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:04:11,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:11,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:11,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:11,414 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 01:04:11,462 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:11,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:11,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:11,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:11,468 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:11,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:11,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:11,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:11,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:11,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:11,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:11,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:11,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:11,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:11,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:11,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:11,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:11,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:11,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:11,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:11,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:11,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:11,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:11,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:11,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:11,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:11,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:11,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:11,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:11,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:11,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:11,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:11,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:11,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:11,915 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:11,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-10-27 01:04:12,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04bc371c8/bcdc613e21c7455aadd953dd709c139d/FLAGb5cefd582 [2020-10-27 01:04:12,717 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:12,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-10-27 01:04:12,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04bc371c8/bcdc613e21c7455aadd953dd709c139d/FLAGb5cefd582 [2020-10-27 01:04:13,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04bc371c8/bcdc613e21c7455aadd953dd709c139d [2020-10-27 01:04:13,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:13,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:13,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:13,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:13,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:13,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:13" (1/1) ... [2020-10-27 01:04:13,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3656c9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13, skipping insertion in model container [2020-10-27 01:04:13,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:13" (1/1) ... [2020-10-27 01:04:13,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:13,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:13,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:13,385 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:13,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:13,441 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:13,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13 WrapperNode [2020-10-27 01:04:13,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:13,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:13,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:13,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:13,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13" (1/1) ... [2020-10-27 01:04:13,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13" (1/1) ... [2020-10-27 01:04:13,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13" (1/1) ... [2020-10-27 01:04:13,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13" (1/1) ... [2020-10-27 01:04:13,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13" (1/1) ... [2020-10-27 01:04:13,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13" (1/1) ... [2020-10-27 01:04:13,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13" (1/1) ... [2020-10-27 01:04:13,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:13,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:13,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:13,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:13,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13" (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 01:04:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-27 01:04:13,638 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-10-27 01:04:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 01:04:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:04:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-27 01:04:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:04:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-10-27 01:04:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 01:04:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:04:14,333 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:14,333 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 01:04:14,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:14 BoogieIcfgContainer [2020-10-27 01:04:14,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:14,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:14,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:14,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:14,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:13" (1/3) ... [2020-10-27 01:04:14,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfba509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:14, skipping insertion in model container [2020-10-27 01:04:14,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:13" (2/3) ... [2020-10-27 01:04:14,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfba509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:14, skipping insertion in model container [2020-10-27 01:04:14,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:14" (3/3) ... [2020-10-27 01:04:14,349 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-10-27 01:04:14,364 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:14,370 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:14,385 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:14,428 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:14,428 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:14,428 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:14,428 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:14,428 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:14,429 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:14,429 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:14,429 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-27 01:04:14,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 01:04:14,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:14,464 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 01:04:14,465 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:14,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:14,474 INFO L82 PathProgramCache]: Analyzing trace with hash 151569813, now seen corresponding path program 1 times [2020-10-27 01:04:14,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:14,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788493645] [2020-10-27 01:04:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 01:04:15,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:15,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-27 01:04:15,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:15,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 01:04:15,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:04:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:15,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:15,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:04:15,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:15,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 01:04:15,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:04:15,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 01:04:15,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:15,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 01:04:15,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:15,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:04:15,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:15,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:15,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:04:15,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:15,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:04:15,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:15,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:04:15,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:15,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:04:15,351 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 01:04:15,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788493645] [2020-10-27 01:04:15,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:15,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:04:15,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114979811] [2020-10-27 01:04:15,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:04:15,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:15,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:04:15,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:04:15,385 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2020-10-27 01:04:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:15,671 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2020-10-27 01:04:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:04:15,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 01:04:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:15,684 INFO L225 Difference]: With dead ends: 84 [2020-10-27 01:04:15,684 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 01:04:15,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:04:15,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 01:04:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-27 01:04:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 01:04:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-27 01:04:15,772 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 23 [2020-10-27 01:04:15,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:15,775 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-27 01:04:15,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:04:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-27 01:04:15,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 01:04:15,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:15,782 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 01:04:15,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:15,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:15,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:15,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1776539675, now seen corresponding path program 1 times [2020-10-27 01:04:15,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:15,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854787143] [2020-10-27 01:04:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:15,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 01:04:16,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 01:04:16,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 01:04:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:16,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:16,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:16,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:04:16,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:16,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 01:04:16,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 01:04:16,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 01:04:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:16,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:16,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:04:16,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 01:04:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:04:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:16,244 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 01:04:16,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854787143] [2020-10-27 01:04:16,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:16,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:04:16,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126511870] [2020-10-27 01:04:16,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:04:16,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:16,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:04:16,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:04:16,248 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-27 01:04:16,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:16,443 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-27 01:04:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:04:16,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-27 01:04:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:16,447 INFO L225 Difference]: With dead ends: 61 [2020-10-27 01:04:16,447 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 01:04:16,449 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 01:04:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 01:04:16,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-27 01:04:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 01:04:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 01:04:16,462 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 24 [2020-10-27 01:04:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:16,463 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 01:04:16,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:04:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 01:04:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 01:04:16,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:16,465 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 01:04:16,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:04:16,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:16,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:16,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1801739378, now seen corresponding path program 1 times [2020-10-27 01:04:16,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:16,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553042575] [2020-10-27 01:04:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 01:04:16,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 01:04:16,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 01:04:16,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:16,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:16,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:04:16,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-27 01:04:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:04:16,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 01:04:16,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 01:04:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:16,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:04:16,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:16,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:16,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 01:04:16,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:16,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 01:04:16,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:04:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:04:16,779 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 01:04:16,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553042575] [2020-10-27 01:04:16,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:16,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:04:16,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057769940] [2020-10-27 01:04:16,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:04:16,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:16,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:04:16,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:04:16,782 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 01:04:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:16,969 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-27 01:04:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:04:16,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-27 01:04:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:16,972 INFO L225 Difference]: With dead ends: 65 [2020-10-27 01:04:16,972 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 01:04:16,973 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 01:04:16,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 01:04:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-27 01:04:16,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 01:04:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 01:04:16,983 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 25 [2020-10-27 01:04:16,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:16,984 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 01:04:16,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:04:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 01:04:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 01:04:16,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:16,986 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 01:04:16,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:04:16,986 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:16,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:16,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1575571201, now seen corresponding path program 1 times [2020-10-27 01:04:16,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:16,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588635531] [2020-10-27 01:04:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 01:04:17,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 01:04:17,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 01:04:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:17,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:17,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:04:17,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:17,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:04:17,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:04:17,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:04:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:04:17,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 01:04:17,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:04:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,274 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 01:04:17,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588635531] [2020-10-27 01:04:17,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:17,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:04:17,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203747033] [2020-10-27 01:04:17,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:04:17,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:17,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:04:17,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:04:17,277 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 01:04:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:17,472 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-27 01:04:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:04:17,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-27 01:04:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:17,474 INFO L225 Difference]: With dead ends: 69 [2020-10-27 01:04:17,474 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 01:04:17,475 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 01:04:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 01:04:17,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2020-10-27 01:04:17,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 01:04:17,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 01:04:17,484 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 26 [2020-10-27 01:04:17,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:17,484 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 01:04:17,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:04:17,485 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 01:04:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 01:04:17,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:17,486 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 01:04:17,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:04:17,486 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:17,487 INFO L82 PathProgramCache]: Analyzing trace with hash -624344114, now seen corresponding path program 1 times [2020-10-27 01:04:17,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:17,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486266481] [2020-10-27 01:04:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 01:04:17,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 01:04:17,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 01:04:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:04:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:04:17,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:04:17,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:04:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:04:17,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:04:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:04:17,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 01:04:17,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:04:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:04:17,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:04:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:04:17,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:04:17,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:04:17,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:04:17,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:04:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 01:04:17,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:04:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:04:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:04:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:04:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:04:17,753 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 01:04:17,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486266481] [2020-10-27 01:04:17,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:04:17,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:04:17,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52549892] [2020-10-27 01:04:17,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:04:17,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:04:17,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:04:17,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:04:17,756 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-27 01:04:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:04:17,910 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-27 01:04:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:04:17,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-27 01:04:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:04:17,912 INFO L225 Difference]: With dead ends: 65 [2020-10-27 01:04:17,912 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 01:04:17,913 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 01:04:17,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 01:04:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-27 01:04:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 01:04:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 01:04:17,921 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 27 [2020-10-27 01:04:17,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:04:17,922 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 01:04:17,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:04:17,922 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 01:04:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 01:04:17,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:17,923 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 01:04:17,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:04:17,924 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:17,924 INFO L82 PathProgramCache]: Analyzing trace with hash -495261395, now seen corresponding path program 1 times [2020-10-27 01:04:17,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:17,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213431794] [2020-10-27 01:04:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:17,940 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:17,941 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:17,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:04:17,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:17 BoogieIcfgContainer [2020-10-27 01:04:17,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:17,966 INFO L168 Benchmark]: Toolchain (without parser) took 4871.66 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 129.5 MB in the beginning and 80.0 MB in the end (delta: 49.5 MB). Peak memory consumption was 82.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:17,967 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 154.1 MB. Free memory was 126.2 MB in the beginning and 126.1 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:17,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.53 ms. Allocated memory is still 154.1 MB. Free memory was 128.9 MB in the beginning and 118.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:17,969 INFO L168 Benchmark]: Boogie Preprocessor took 98.29 ms. Allocated memory is still 154.1 MB. Free memory was 118.8 MB in the beginning and 116.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:17,969 INFO L168 Benchmark]: RCFGBuilder took 792.28 ms. Allocated memory is still 154.1 MB. Free memory was 116.9 MB in the beginning and 131.1 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:17,970 INFO L168 Benchmark]: TraceAbstraction took 3624.28 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.6 MB in the beginning and 80.0 MB in the end (delta: 50.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:17,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 154.1 MB. Free memory was 126.2 MB in the beginning and 126.1 MB in the end (delta: 120.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 342.53 ms. Allocated memory is still 154.1 MB. Free memory was 128.9 MB in the beginning and 118.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 98.29 ms. Allocated memory is still 154.1 MB. Free memory was 118.8 MB in the beginning and 116.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 792.28 ms. Allocated memory is still 154.1 MB. Free memory was 116.9 MB in the beginning and 131.1 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3624.28 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.6 MB in the beginning and 80.0 MB in the end (delta: 50.6 MB). Peak memory consumption was 82.6 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 71, overapproximation of someUnaryFLOAToperation at line 66. Possible FailurePath: [L66] float x = -0.0f; [L67] float y = 0.0f; [L68] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] RET, EXPR __fpclassify_float(x) [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] RET, EXPR fmin_float(x, y) [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1232b.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: 6, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 236 SDtfs, 50 SDslu, 483 SDs, 0 SdLazy, 336 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 10346 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...