/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0920a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:42:53,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:42:53,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:42:53,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:42:53,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:42:53,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:42:53,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:42:53,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:42:53,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:42:53,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:42:53,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:42:53,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:42:53,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:42:53,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:42:53,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:42:53,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:42:53,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:42:53,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:42:53,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:42:53,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:42:53,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:42:53,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:42:53,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:42:53,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:42:53,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:42:53,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:42:53,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:42:53,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:42:53,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:42:53,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:42:53,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:42:53,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:42:53,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:42:53,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:42:53,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:42:53,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:42:53,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:42:53,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:42:53,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:42:53,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:42:53,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:42:53,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:42:53,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:42:53,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:42:54,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:42:54,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:42:54,003 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:42:54,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:42:54,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:42:54,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:42:54,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:42:54,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:42:54,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:42:54,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:42:54,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:42:54,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:42:54,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:42:54,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:42:54,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:42:54,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:42:54,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:42:54,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:42:54,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:42:54,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:42:54,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:42:54,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:42:54,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:42:54,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:42:54,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:42:54,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:42:54,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:42:54,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:42:54,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:42:54,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:42:54,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:42:54,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:42:54,442 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:42:54,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0920a.c [2020-10-27 19:42:54,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d952adda/12c2ebc2fbd24235a22e3c3346c918f0/FLAGf2da6019b [2020-10-27 19:42:55,208 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:42:55,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0920a.c [2020-10-27 19:42:55,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d952adda/12c2ebc2fbd24235a22e3c3346c918f0/FLAGf2da6019b [2020-10-27 19:42:55,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d952adda/12c2ebc2fbd24235a22e3c3346c918f0 [2020-10-27 19:42:55,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:42:55,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:42:55,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:42:55,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:42:55,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:42:55,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:42:55" (1/1) ... [2020-10-27 19:42:55,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b250cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55, skipping insertion in model container [2020-10-27 19:42:55,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:42:55" (1/1) ... [2020-10-27 19:42:55,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:42:55,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:42:55,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:42:55,825 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:42:55,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:42:55,894 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:42:55,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55 WrapperNode [2020-10-27 19:42:55,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:42:55,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:42:55,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:42:55,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:42:55,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55" (1/1) ... [2020-10-27 19:42:55,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55" (1/1) ... [2020-10-27 19:42:55,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55" (1/1) ... [2020-10-27 19:42:55,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55" (1/1) ... [2020-10-27 19:42:55,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55" (1/1) ... [2020-10-27 19:42:55,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55" (1/1) ... [2020-10-27 19:42:55,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55" (1/1) ... [2020-10-27 19:42:55,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:42:55,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:42:55,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:42:55,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:42:55,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:42:56,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:42:56,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:42:56,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:42:56,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-27 19:42:56,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2020-10-27 19:42:56,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-27 19:42:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-27 19:42:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:42:56,066 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:42:56,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:42:56,067 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:42:56,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:42:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 19:42:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-27 19:42:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 19:42:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:42:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:42:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2020-10-27 19:42:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:42:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 19:42:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-27 19:42:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-27 19:42:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:42:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:42:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:42:56,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:42:56,906 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:42:56,906 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-27 19:42:56,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:42:56 BoogieIcfgContainer [2020-10-27 19:42:56,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:42:56,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:42:56,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:42:56,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:42:56,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:42:55" (1/3) ... [2020-10-27 19:42:56,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c34e928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:42:56, skipping insertion in model container [2020-10-27 19:42:56,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:42:55" (2/3) ... [2020-10-27 19:42:56,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c34e928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:42:56, skipping insertion in model container [2020-10-27 19:42:56,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:42:56" (3/3) ... [2020-10-27 19:42:56,918 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2020-10-27 19:42:56,932 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:42:56,938 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:42:56,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:42:56,987 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:42:56,987 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:42:56,987 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:42:56,988 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:42:56,988 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:42:56,988 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:42:56,988 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:42:56,988 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:42:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-27 19:42:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 19:42:57,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:57,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:42:57,018 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:57,025 INFO L82 PathProgramCache]: Analyzing trace with hash 584517502, now seen corresponding path program 1 times [2020-10-27 19:42:57,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:57,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562347781] [2020-10-27 19:42:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:57,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:57,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:57,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:57,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 19:42:57,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:42:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-27 19:42:57,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 19:42:57,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:57,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:42:57,789 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 19:42:57,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:42:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:57,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:57,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:42:57,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:57,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:42:57,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:42:57,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:57,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:57,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:42:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:57,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:57,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:57,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 19:42:57,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:57,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:42:57,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 19:42:57,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:57,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 19:42:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:57,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:57,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:42:57,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:42:57,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:42:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:42:57,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562347781] [2020-10-27 19:42:57,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:42:57,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:42:57,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108030703] [2020-10-27 19:42:57,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:42:57,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:42:57,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:42:57,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:42:57,920 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 4 states. [2020-10-27 19:42:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:42:58,252 INFO L93 Difference]: Finished difference Result 107 states and 153 transitions. [2020-10-27 19:42:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 19:42:58,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-27 19:42:58,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:42:58,266 INFO L225 Difference]: With dead ends: 107 [2020-10-27 19:42:58,266 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 19:42:58,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:42:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 19:42:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-27 19:42:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 19:42:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2020-10-27 19:42:58,328 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 25 [2020-10-27 19:42:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:42:58,329 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2020-10-27 19:42:58,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:42:58,331 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2020-10-27 19:42:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 19:42:58,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:58,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:42:58,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:42:58,334 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:58,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:58,337 INFO L82 PathProgramCache]: Analyzing trace with hash 667862987, now seen corresponding path program 1 times [2020-10-27 19:42:58,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:58,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866594784] [2020-10-27 19:42:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:58,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:58,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:58,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 19:42:58,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:58,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 19:42:58,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:42:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 19:42:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:42:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:42:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:58,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:58,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:58,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:42:58,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:58,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 19:42:58,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:42:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:58,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:58,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:42:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:58,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:58,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 19:42:58,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:58,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 19:42:58,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:58,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 19:42:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:58,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 19:42:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:42:58,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:42:58,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:42:58,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:42:58,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:42:58,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:42:58,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:42:58,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:42:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:42:58,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:42:58,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:42:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:42:58,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866594784] [2020-10-27 19:42:58,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:42:58,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:42:58,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823367924] [2020-10-27 19:42:58,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:42:58,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:42:58,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:42:58,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:42:58,716 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 5 states. [2020-10-27 19:42:59,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:42:59,030 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2020-10-27 19:42:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:42:59,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-27 19:42:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:42:59,033 INFO L225 Difference]: With dead ends: 83 [2020-10-27 19:42:59,033 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 19:42:59,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:42:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 19:42:59,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-27 19:42:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 19:42:59,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2020-10-27 19:42:59,046 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 26 [2020-10-27 19:42:59,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:42:59,047 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2020-10-27 19:42:59,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:42:59,047 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2020-10-27 19:42:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 19:42:59,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:42:59,049 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, 1] [2020-10-27 19:42:59,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:42:59,049 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:42:59,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:42:59,050 INFO L82 PathProgramCache]: Analyzing trace with hash -567826020, now seen corresponding path program 1 times [2020-10-27 19:42:59,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:42:59,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687544224] [2020-10-27 19:42:59,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:42:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:42:59,091 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:42:59,091 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:42:59,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:42:59,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:42:59 BoogieIcfgContainer [2020-10-27 19:42:59,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:42:59,127 INFO L168 Benchmark]: Toolchain (without parser) took 3619.95 ms. Allocated memory was 125.8 MB in the beginning and 154.1 MB in the end (delta: 28.3 MB). Free memory was 100.8 MB in the beginning and 76.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 53.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:59,128 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:42:59,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.23 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 87.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:59,131 INFO L168 Benchmark]: Boogie Preprocessor took 72.59 ms. Allocated memory is still 125.8 MB. Free memory was 87.1 MB in the beginning and 84.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:59,134 INFO L168 Benchmark]: RCFGBuilder took 939.28 ms. Allocated memory was 125.8 MB in the beginning and 154.1 MB in the end (delta: 28.3 MB). Free memory was 84.9 MB in the beginning and 121.0 MB in the end (delta: -36.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:59,135 INFO L168 Benchmark]: TraceAbstraction took 2214.07 ms. Allocated memory is still 154.1 MB. Free memory was 120.9 MB in the beginning and 76.7 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:42:59,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 382.23 ms. Allocated memory is still 125.8 MB. Free memory was 100.1 MB in the beginning and 87.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.59 ms. Allocated memory is still 125.8 MB. Free memory was 87.1 MB in the beginning and 84.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 939.28 ms. Allocated memory was 125.8 MB in the beginning and 154.1 MB in the end (delta: 28.3 MB). Free memory was 84.9 MB in the beginning and 121.0 MB in the end (delta: -36.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2214.07 ms. Allocated memory is still 154.1 MB. Free memory was 120.9 MB in the beginning and 76.7 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.7 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 bitwiseOr at line 61, overapproximation of bitwiseAnd at line 135, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62, overapproximation of someBinaryDOUBLEComparisonOperation at line 139. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L148] double x = __VERIFIER_nondet_double(); [L150] EXPR x < 0 && isfinite_double(x) [L150] CALL, EXPR isfinite_double(x) [L129] __int32_t hx; [L131] ieee_double_shape_type gh_u; [L132] gh_u.value = (x) [L133] EXPR gh_u.parts.msw [L133] (hx) = gh_u.parts.msw [L135] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L150] RET, EXPR isfinite_double(x) [L150] EXPR x < 0 && isfinite_double(x) [L150] COND TRUE (x < 0 && isfinite_double(x)) [L152] CALL, EXPR __ieee754_log(x) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 [L60] COND TRUE hx < 0x00100000 [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; [L152] RET, EXPR __ieee754_log(x) [L152] double res = __ieee754_log(x); [L155] CALL, EXPR isnan_double(res) [L139] return x != x; [L155] RET, EXPR isnan_double(res) [L155] COND TRUE !isnan_double(res) [L156] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0920a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 40 SDslu, 135 SDs, 0 SdLazy, 128 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred 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, 1.0s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 4901 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...