/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0270b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:02:51,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:02:51,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:02:51,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:02:51,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:02:51,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:02:51,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:02:51,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:02:51,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:02:51,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:02:51,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:02:51,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:02:51,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:02:51,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:02:51,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:02:51,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:02:51,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:02:51,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:02:51,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:02:51,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:02:51,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:02:51,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:02:51,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:02:51,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:02:51,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:02:51,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:02:51,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:02:51,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:02:51,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:02:51,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:02:51,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:02:51,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:02:51,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:02:51,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:02:51,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:02:51,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:02:51,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:02:51,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:02:51,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:02:51,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:02:51,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:02:52,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:02:52,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:02:52,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:02:52,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:02:52,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:02:52,060 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:02:52,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:02:52,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:02:52,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:02:52,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:02:52,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:02:52,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:02:52,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:02:52,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:02:52,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:02:52,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:02:52,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:02:52,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:02:52,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:02:52,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:02:52,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:02:52,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:02:52,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:02:52,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:02:52,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:02:52,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:02:52,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:02:52,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:02:52,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:02:52,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:02:52,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:02:52,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:02:52,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:02:52,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:02:52,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:02:52,521 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:02:52,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0270b.c [2020-10-27 01:02:52,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2affa8c/17a3ea501eb34c7f87cb3bd364973d61/FLAG162a89d6e [2020-10-27 01:02:53,273 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:02:53,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0270b.c [2020-10-27 01:02:53,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2affa8c/17a3ea501eb34c7f87cb3bd364973d61/FLAG162a89d6e [2020-10-27 01:02:53,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2affa8c/17a3ea501eb34c7f87cb3bd364973d61 [2020-10-27 01:02:53,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:02:53,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:02:53,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:53,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:02:53,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:02:53,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:53" (1/1) ... [2020-10-27 01:02:53,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671703d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53, skipping insertion in model container [2020-10-27 01:02:53,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:02:53" (1/1) ... [2020-10-27 01:02:53,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:02:53,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:02:53,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:53,886 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:02:53,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:02:53,966 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:02:53,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53 WrapperNode [2020-10-27 01:02:53,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:02:53,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:02:53,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:02:53,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:02:53,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53" (1/1) ... [2020-10-27 01:02:53,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53" (1/1) ... [2020-10-27 01:02:53,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53" (1/1) ... [2020-10-27 01:02:53,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53" (1/1) ... [2020-10-27 01:02:54,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53" (1/1) ... [2020-10-27 01:02:54,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53" (1/1) ... [2020-10-27 01:02:54,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53" (1/1) ... [2020-10-27 01:02:54,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:02:54,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:02:54,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:02:54,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:02:54,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:02:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:02:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:02:54,136 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:02:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-27 01:02:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-10-27 01:02:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-27 01:02:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_asinf [2020-10-27 01:02:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:02:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:02:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:02:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:02:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:02:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 01:02:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-27 01:02:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:02:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:02:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:02:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-10-27 01:02:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:02:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:02:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-27 01:02:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_asinf [2020-10-27 01:02:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:02:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:02:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:02:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:02:54,932 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:02:54,932 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-27 01:02:54,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:54 BoogieIcfgContainer [2020-10-27 01:02:54,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:02:54,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:02:54,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:02:54,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:02:54,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:02:53" (1/3) ... [2020-10-27 01:02:54,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6badc78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:54, skipping insertion in model container [2020-10-27 01:02:54,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:02:53" (2/3) ... [2020-10-27 01:02:54,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6badc78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:02:54, skipping insertion in model container [2020-10-27 01:02:54,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:02:54" (3/3) ... [2020-10-27 01:02:54,943 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0270b.c [2020-10-27 01:02:54,956 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:02:54,961 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:02:54,976 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:02:55,005 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:02:55,006 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:02:55,006 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:02:55,006 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:02:55,006 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:02:55,006 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:02:55,006 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:02:55,007 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:02:55,026 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-27 01:02:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 01:02:55,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:55,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:02:55,034 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:55,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:55,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1586539338, now seen corresponding path program 1 times [2020-10-27 01:02:55,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:55,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470672053] [2020-10-27 01:02:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:55,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:55,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:55,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 01:02:55,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 01:02:55,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:55,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:02:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:02:55,554 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 01:02:55,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:02:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:55,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:55,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:55,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:02:55,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:55,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 01:02:55,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:02:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:02:55,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:02:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:02:55,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:02:55,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:02:55,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 01:02:55,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:02:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:02:55,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:02:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:02:55,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:02:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:02:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:02:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:02:55,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470672053] [2020-10-27 01:02:55,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:02:55,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:02:55,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638285810] [2020-10-27 01:02:55,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:02:55,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:02:55,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:02:55,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:02:55,670 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 4 states. [2020-10-27 01:02:55,827 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-27 01:02:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:02:56,139 INFO L93 Difference]: Finished difference Result 157 states and 235 transitions. [2020-10-27 01:02:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:02:56,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-27 01:02:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:02:56,152 INFO L225 Difference]: With dead ends: 157 [2020-10-27 01:02:56,152 INFO L226 Difference]: Without dead ends: 77 [2020-10-27 01:02:56,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 01:02:56,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-27 01:02:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-27 01:02:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 01:02:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2020-10-27 01:02:56,209 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 18 [2020-10-27 01:02:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:02:56,210 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2020-10-27 01:02:56,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:02:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2020-10-27 01:02:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:02:56,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:02:56,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:02:56,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:02:56,212 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:02:56,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:02:56,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1118971216, now seen corresponding path program 1 times [2020-10-27 01:02:56,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:02:56,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558168300] [2020-10-27 01:02:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:02:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:02:56,270 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:02:56,273 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:02:56,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:02:56,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:02:56 BoogieIcfgContainer [2020-10-27 01:02:56,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:02:56,309 INFO L168 Benchmark]: Toolchain (without parser) took 2703.55 ms. Allocated memory is still 158.3 MB. Free memory was 133.4 MB in the beginning and 99.3 MB in the end (delta: 34.1 MB). Peak memory consumption was 35.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:56,309 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 131.4 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:02:56,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.85 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 119.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:56,314 INFO L168 Benchmark]: Boogie Preprocessor took 69.88 ms. Allocated memory is still 158.3 MB. Free memory was 119.4 MB in the beginning and 117.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:56,315 INFO L168 Benchmark]: RCFGBuilder took 895.84 ms. Allocated memory is still 158.3 MB. Free memory was 116.8 MB in the beginning and 116.0 MB in the end (delta: 822.5 kB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:56,316 INFO L168 Benchmark]: TraceAbstraction took 1368.36 ms. Allocated memory is still 158.3 MB. Free memory was 115.5 MB in the beginning and 99.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:02:56,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 131.4 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 357.85 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 119.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.88 ms. Allocated memory is still 158.3 MB. Free memory was 119.4 MB in the beginning and 117.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 895.84 ms. Allocated memory is still 158.3 MB. Free memory was 116.8 MB in the beginning and 116.0 MB in the end (delta: 822.5 kB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1368.36 ms. Allocated memory is still 158.3 MB. Free memory was 115.5 MB in the beginning and 99.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 199, overapproximation of someUnaryDOUBLEoperation at line 113, overapproximation of bitwiseAnd at line 127, overapproximation of someUnaryFLOAToperation at line 111, overapproximation of someBinaryArithmeticFLOAToperation at line 130. Possible FailurePath: [L26] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L109-L117] static const float one_asin = 1.0000000000e+00, huge_asin = 1.000e+30, pio2_hi_asin = 1.57079637050628662109375f, pio2_lo_asin = -4.37113900018624283e-8f, pio4_hi_asin = 0.785398185253143310546875f, pS0_asin = 1.6666667163e-01, pS1_asin = -3.2556581497e-01, pS2_asin = 2.0121252537e-01, pS3_asin = -4.0055535734e-02, pS4_asin = 7.9153501429e-04, pS5_asin = 3.4793309169e-05, qS1_asin = -2.4033949375e+00, qS2_asin = 2.0209457874e+00, qS3_asin = -6.8828397989e-01, qS4_asin = 7.7038154006e-02; [L195] float x = 0.0f; [L196] CALL, EXPR __ieee754_asinf(x) [L120] float t, w, p, q, c, r, s; [L121] __int32_t hx, ix; [L123] ieee_float_shape_type gf_u; [L124] gf_u.value = (x) [L125] EXPR gf_u.word [L125] (hx) = gf_u.word [L127] ix = hx & 0x7fffffff [L128] COND TRUE ix == 0x3f800000 [L130] return x * pio2_hi_asin + x * pio2_lo_asin; [L196] RET, EXPR __ieee754_asinf(x) [L196] float res = __ieee754_asinf(x); [L199] EXPR res == 0.0f && __signbit_float(res) == 0 [L199] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L200] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0270b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 12 SDslu, 82 SDs, 0 SdLazy, 95 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1870 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...