/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_0970a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:22,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:22,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:22,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:22,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:22,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:22,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:22,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:22,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:22,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:22,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:22,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:22,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:22,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:22,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:22,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:22,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:22,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:22,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:22,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:22,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:22,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:22,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:22,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:22,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:22,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:22,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:22,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:22,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:22,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:22,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:22,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:22,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:22,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:22,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:22,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:22,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:22,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:22,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:22,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:22,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:22,527 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 [2020-10-28 14:28:22,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:22,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:22,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:22,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:22,591 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:22,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:22,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:22,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:22,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:22,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:22,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:22,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:22,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:22,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:22,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:22,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:22,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:22,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:22,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:22,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:22,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:22,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:22,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:22,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:22,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:22,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:22,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:22,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:22,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:22,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:23,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:23,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:23,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:23,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:23,065 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:23,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0970a.c [2020-10-28 14:28:23,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4043cf03a/0602b795cd624dc489925cad2ea71653/FLAG4c90614b7 [2020-10-28 14:28:23,861 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:23,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0970a.c [2020-10-28 14:28:23,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4043cf03a/0602b795cd624dc489925cad2ea71653/FLAG4c90614b7 [2020-10-28 14:28:24,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4043cf03a/0602b795cd624dc489925cad2ea71653 [2020-10-28 14:28:24,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:24,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:24,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:24,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:24,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:24,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:24" (1/1) ... [2020-10-28 14:28:24,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d25613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24, skipping insertion in model container [2020-10-28 14:28:24,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:24" (1/1) ... [2020-10-28 14:28:24,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:24,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:28:24,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:24,668 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:28:24,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:28:24,784 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:28:24,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24 WrapperNode [2020-10-28 14:28:24,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:24,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:28:24,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:28:24,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:28:24,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24" (1/1) ... [2020-10-28 14:28:24,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24" (1/1) ... [2020-10-28 14:28:24,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24" (1/1) ... [2020-10-28 14:28:24,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24" (1/1) ... [2020-10-28 14:28:24,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24" (1/1) ... [2020-10-28 14:28:24,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24" (1/1) ... [2020-10-28 14:28:24,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24" (1/1) ... [2020-10-28 14:28:24,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:28:24,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:28:24,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:28:24,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:28:24,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24" (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 [2020-10-28 14:28:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:28:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:28:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:28:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2020-10-28 14:28:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log10f [2020-10-28 14:28:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-28 14:28:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-10-28 14:28:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:28:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:28:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:28:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:28:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:28:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:28:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2020-10-28 14:28:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:28:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:28:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:28:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:28:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:28:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log10f [2020-10-28 14:28:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-28 14:28:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-10-28 14:28:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:28:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:28:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:28:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:28:25,632 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:28:25,632 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-28 14:28:25,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:25 BoogieIcfgContainer [2020-10-28 14:28:25,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:28:25,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:28:25,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:28:25,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:28:25,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:24" (1/3) ... [2020-10-28 14:28:25,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5bfd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:25, skipping insertion in model container [2020-10-28 14:28:25,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:24" (2/3) ... [2020-10-28 14:28:25,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5bfd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:28:25, skipping insertion in model container [2020-10-28 14:28:25,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:28:25" (3/3) ... [2020-10-28 14:28:25,644 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0970a.c [2020-10-28 14:28:25,658 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:28:25,664 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:28:25,679 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:28:25,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:28:25,707 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:28:25,707 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:28:25,707 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:28:25,708 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:28:25,708 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:28:25,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:28:25,708 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:28:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-10-28 14:28:25,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:28:25,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:25,737 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] [2020-10-28 14:28:25,738 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:25,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:25,748 INFO L82 PathProgramCache]: Analyzing trace with hash 963234427, now seen corresponding path program 1 times [2020-10-28 14:28:25,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:25,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019125742] [2020-10-28 14:28:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:26,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:26,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:26,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 14:28:26,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:28:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-28 14:28:26,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:26,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 14:28:26,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:26,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:28:26,568 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:28:26,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:26,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:26,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:26,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:26,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:28:26,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:26,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:26,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:28:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:26,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:26,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 14:28:26,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:28:26,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:26,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:28:26,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:26,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 14:28:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:26,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:28:26,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:26,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:28:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:26,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:28:26,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019125742] [2020-10-28 14:28:26,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:26,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:28:26,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360380237] [2020-10-28 14:28:26,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:28:26,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:26,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:28:26,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:28:26,700 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 4 states. [2020-10-28 14:28:26,935 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-28 14:28:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:27,384 INFO L93 Difference]: Finished difference Result 143 states and 210 transitions. [2020-10-28 14:28:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:28:27,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 14:28:27,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:27,398 INFO L225 Difference]: With dead ends: 143 [2020-10-28 14:28:27,399 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 14:28:27,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:28:27,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 14:28:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-28 14:28:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 14:28:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2020-10-28 14:28:27,463 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 24 [2020-10-28 14:28:27,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:27,463 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2020-10-28 14:28:27,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:28:27,464 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2020-10-28 14:28:27,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 14:28:27,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:27,465 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] [2020-10-28 14:28:27,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:28:27,466 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:27,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:27,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1607049988, now seen corresponding path program 1 times [2020-10-28 14:28:27,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:27,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828943900] [2020-10-28 14:28:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:27,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:27,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 14:28:27,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 14:28:27,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:27,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:28:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:28:27,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:28:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:28:27,772 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 14:28:27,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:28:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:27,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:27,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:27,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:28:27,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:27,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:27,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:27,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:28:27,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:27,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:28:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:27,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:27,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:28:27,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:28:27,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:27,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 14:28:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 14:28:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:28:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:28:27,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:28:27,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:28:27,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:28:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:28:27,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:28:27,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:28:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:28:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:28:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:28:27,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:28:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:28:27,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828943900] [2020-10-28 14:28:27,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:28:27,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:28:27,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346295078] [2020-10-28 14:28:27,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:28:27,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:28:27,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:28:27,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:28:27,911 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand 5 states. [2020-10-28 14:28:28,119 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-28 14:28:28,275 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 14:28:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:28:28,509 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2020-10-28 14:28:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:28:28,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-28 14:28:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:28:28,511 INFO L225 Difference]: With dead ends: 119 [2020-10-28 14:28:28,512 INFO L226 Difference]: Without dead ends: 67 [2020-10-28 14:28:28,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:28:28,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-28 14:28:28,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-28 14:28:28,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 14:28:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2020-10-28 14:28:28,527 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 25 [2020-10-28 14:28:28,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:28:28,527 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2020-10-28 14:28:28,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:28:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2020-10-28 14:28:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 14:28:28,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:28:28,529 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, 1, 1, 1, 1, 1, 1] [2020-10-28 14:28:28,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:28:28,529 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:28:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:28:28,530 INFO L82 PathProgramCache]: Analyzing trace with hash 229192464, now seen corresponding path program 1 times [2020-10-28 14:28:28,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:28:28,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51454834] [2020-10-28 14:28:28,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:28:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:28:28,570 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:28:28,571 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:28:28,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:28:28,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:28:28 BoogieIcfgContainer [2020-10-28 14:28:28,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:28:28,595 INFO L168 Benchmark]: Toolchain (without parser) took 4362.35 ms. Allocated memory was 155.2 MB in the beginning and 202.4 MB in the end (delta: 47.2 MB). Free memory was 130.7 MB in the beginning and 135.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:28,596 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 155.2 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:28:28,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.90 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 117.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:28,597 INFO L168 Benchmark]: Boogie Preprocessor took 75.67 ms. Allocated memory is still 155.2 MB. Free memory was 117.1 MB in the beginning and 114.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:28,598 INFO L168 Benchmark]: RCFGBuilder took 771.12 ms. Allocated memory is still 155.2 MB. Free memory was 114.7 MB in the beginning and 117.1 MB in the end (delta: -2.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:28,599 INFO L168 Benchmark]: TraceAbstraction took 2956.94 ms. Allocated memory was 155.2 MB in the beginning and 202.4 MB in the end (delta: 47.2 MB). Free memory was 116.6 MB in the beginning and 135.5 MB in the end (delta: -18.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:28:28,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 155.2 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 543.90 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 117.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.67 ms. Allocated memory is still 155.2 MB. Free memory was 117.1 MB in the beginning and 114.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 771.12 ms. Allocated memory is still 155.2 MB. Free memory was 114.7 MB in the beginning and 117.1 MB in the end (delta: -2.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2956.94 ms. Allocated memory was 155.2 MB in the beginning and 202.4 MB in the end (delta: 47.2 MB). Free memory was 116.6 MB in the beginning and 135.5 MB in the end (delta: -18.9 MB). Peak memory consumption was 27.8 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 147, overapproximation of bitwiseAnd at line 118, overapproximation of someBinaryArithmeticFLOAToperation at line 119. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; [L100-L103] static const float two25_log10 = 3.3554432000e+07, ivln10_log10 = 4.3429449201e-01, log10_2hi_log10 = 3.0102920532e-01, log10_2lo_log10 = 7.9034151668e-07; [L105] static const float zero = 0.0; [L168] float x = __VERIFIER_nondet_float(); [L170] x < 0 && isfinite_float(x) [L170] CALL, EXPR isfinite_float(x) [L151] __int32_t ix; [L153] ieee_float_shape_type gf_u; [L154] gf_u.value = (x) [L155] EXPR gf_u.word [L155] (ix) = gf_u.word [L157] ix &= 0x7fffffff [L158] return (((ix) < 0x7f800000L)); [L170] RET, EXPR isfinite_float(x) [L170] x < 0 && isfinite_float(x) [L170] COND TRUE x < 0 && isfinite_float(x) [L172] CALL, EXPR __ieee754_log10f(x) [L108] float y, z; [L109] __int32_t i, k, hx; [L112] ieee_float_shape_type gf_u; [L113] gf_u.value = (x) [L114] EXPR gf_u.word [L114] (hx) = gf_u.word [L117] k = 0 [L118] COND TRUE ((hx & 0x7fffffff) == 0) [L119] return -two25_log10 / zero; [L172] RET, EXPR __ieee754_log10f(x) [L172] float res = __ieee754_log10f(x); [L175] CALL, EXPR isnan_float(res) [L147] return x != x; [L175] RET, EXPR isnan_float(res) [L175] COND TRUE !isnan_float(res) [L176] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0970a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 163 SDtfs, 44 SDslu, 191 SDs, 0 SdLazy, 176 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 5359 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...