/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_0621a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:27:46,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:27:46,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:27:46,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:27:46,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:27:46,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:27:46,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:27:46,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:27:46,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:27:46,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:27:46,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:27:46,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:27:46,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:27:46,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:27:46,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:27:46,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:27:46,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:27:46,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:27:46,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:27:46,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:27:46,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:27:46,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:27:46,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:27:46,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:27:46,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:27:46,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:27:46,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:27:46,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:27:46,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:27:46,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:27:46,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:27:46,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:27:46,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:27:46,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:27:46,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:27:46,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:27:46,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:27:46,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:27:46,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:27:46,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:27:46,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:27:46,125 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 14:27:46,151 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:27:46,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:27:46,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:27:46,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:27:46,153 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:27:46,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:27:46,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:27:46,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:27:46,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:27:46,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:27:46,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:27:46,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:27:46,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:27:46,155 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:27:46,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:27:46,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:27:46,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:27:46,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:27:46,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:27:46,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:27:46,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:27:46,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:27:46,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:27:46,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:27:46,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:27:46,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:27:46,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:27:46,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:27:46,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:27:46,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:27:46,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:27:46,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:27:46,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:27:46,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:27:46,632 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:27:46,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0621a.c [2020-10-28 14:27:46,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d55f97fc6/c15f47b34ac94581a83ee678ff7b75ba/FLAG856f1fd03 [2020-10-28 14:27:47,435 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:27:47,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0621a.c [2020-10-28 14:27:47,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d55f97fc6/c15f47b34ac94581a83ee678ff7b75ba/FLAG856f1fd03 [2020-10-28 14:27:47,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d55f97fc6/c15f47b34ac94581a83ee678ff7b75ba [2020-10-28 14:27:47,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:27:47,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:27:47,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:47,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:27:47,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:27:47,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:47" (1/1) ... [2020-10-28 14:27:47,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cca2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:47, skipping insertion in model container [2020-10-28 14:27:47,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:27:47" (1/1) ... [2020-10-28 14:27:47,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:27:47,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:27:48,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:48,087 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:27:48,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:27:48,174 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:27:48,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:48 WrapperNode [2020-10-28 14:27:48,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:27:48,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:27:48,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:27:48,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:27:48,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:48" (1/1) ... [2020-10-28 14:27:48,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:48" (1/1) ... [2020-10-28 14:27:48,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:48" (1/1) ... [2020-10-28 14:27:48,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:48" (1/1) ... [2020-10-28 14:27:48,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:48" (1/1) ... [2020-10-28 14:27:48,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:48" (1/1) ... [2020-10-28 14:27:48,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:48" (1/1) ... [2020-10-28 14:27:48,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:27:48,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:27:48,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:27:48,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:27:48,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:48" (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 14:27:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:27:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:27:48,354 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:27:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-28 14:27:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-28 14:27:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2020-10-28 14:27:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:27:48,355 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-28 14:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-28 14:27:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-28 14:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:27:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:27:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2020-10-28 14:27:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:27:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:27:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:27:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-28 14:27:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:27:49,052 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:27:49,053 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 14:27:49,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:49 BoogieIcfgContainer [2020-10-28 14:27:49,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:27:49,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:27:49,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:27:49,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:27:49,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:27:47" (1/3) ... [2020-10-28 14:27:49,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fb1bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:49, skipping insertion in model container [2020-10-28 14:27:49,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:27:48" (2/3) ... [2020-10-28 14:27:49,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fb1bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:27:49, skipping insertion in model container [2020-10-28 14:27:49,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:27:49" (3/3) ... [2020-10-28 14:27:49,068 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621a.c [2020-10-28 14:27:49,082 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:27:49,088 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:27:49,104 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:27:49,144 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:27:49,144 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:27:49,144 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:27:49,145 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:27:49,145 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:27:49,145 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:27:49,145 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:27:49,145 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:27:49,196 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-28 14:27:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 14:27:49,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:49,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:27:49,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:49,215 INFO L82 PathProgramCache]: Analyzing trace with hash 57838764, now seen corresponding path program 1 times [2020-10-28 14:27:49,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:49,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410942772] [2020-10-28 14:27:49,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:49,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:49,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:49,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 14:27:49,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:49,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 14:27:49,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:49,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 14:27:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:49,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:27:49,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:27:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:49,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:49,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:49,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:27:49,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:49,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 14:27:49,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:49,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:49,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:27:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:49,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:49,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:27:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:27:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:27:49,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:27:49,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:27:49,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:27:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:27:49,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:27:49,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:27:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:27:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:27:49,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:27:49,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:27:49,933 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 14:27:49,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410942772] [2020-10-28 14:27:49,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:27:49,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:27:49,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877468113] [2020-10-28 14:27:49,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:27:49,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:27:49,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:27:49,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:27:49,965 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-10-28 14:27:50,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:27:50,291 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2020-10-28 14:27:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:27:50,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-28 14:27:50,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:27:50,302 INFO L225 Difference]: With dead ends: 87 [2020-10-28 14:27:50,303 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 14:27:50,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:27:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 14:27:50,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-28 14:27:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 14:27:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-10-28 14:27:50,364 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 18 [2020-10-28 14:27:50,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:27:50,365 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-28 14:27:50,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:27:50,366 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-10-28 14:27:50,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:27:50,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:27:50,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:27:50,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:27:50,368 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:27:50,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:27:50,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2032375689, now seen corresponding path program 1 times [2020-10-28 14:27:50,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:27:50,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939792123] [2020-10-28 14:27:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:27:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:27:50,421 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:27:50,422 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:27:50,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:27:50,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:27:50 BoogieIcfgContainer [2020-10-28 14:27:50,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:27:50,448 INFO L168 Benchmark]: Toolchain (without parser) took 2648.34 ms. Allocated memory is still 162.5 MB. Free memory was 138.0 MB in the beginning and 57.7 MB in the end (delta: 80.3 MB). Peak memory consumption was 79.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:50,449 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 125.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:27:50,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.78 ms. Allocated memory is still 162.5 MB. Free memory was 137.3 MB in the beginning and 124.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:50,450 INFO L168 Benchmark]: Boogie Preprocessor took 92.81 ms. Allocated memory is still 162.5 MB. Free memory was 124.9 MB in the beginning and 122.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:50,451 INFO L168 Benchmark]: RCFGBuilder took 783.15 ms. Allocated memory is still 162.5 MB. Free memory was 122.6 MB in the beginning and 98.7 MB in the end (delta: 23.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:50,452 INFO L168 Benchmark]: TraceAbstraction took 1386.84 ms. Allocated memory is still 162.5 MB. Free memory was 98.1 MB in the beginning and 57.7 MB in the end (delta: 40.5 MB). Peak memory consumption was 39.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:27:50,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 125.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 369.78 ms. Allocated memory is still 162.5 MB. Free memory was 137.3 MB in the beginning and 124.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.81 ms. Allocated memory is still 162.5 MB. Free memory was 124.9 MB in the beginning and 122.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 783.15 ms. Allocated memory is still 162.5 MB. Free memory was 122.6 MB in the beginning and 98.7 MB in the end (delta: 23.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1386.84 ms. Allocated memory is still 162.5 MB. Free memory was 98.1 MB in the beginning and 57.7 MB in the end (delta: 40.5 MB). Peak memory consumption was 39.7 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 someBinaryFLOATComparisonOperation at line 132, overapproximation of someUnaryDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 67, overapproximation of someBinaryArithmeticFLOAToperation at line 70. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L34-L39] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L41-L46] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L48-L52] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L54-L56] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L129] float x = 1.0f / 0.0f; [L130] CALL, EXPR atan_float(x) [L59] float w, s1, s2, z; [L60] __int32_t ix, hx, id; [L63] ieee_float_shape_type gf_u; [L64] gf_u.value = (x) [L65] EXPR gf_u.word [L65] (hx) = gf_u.word [L67] ix = hx & 0x7fffffff [L68] COND TRUE ix >= 0x50800000 [L69] COND TRUE ((ix) > 0x7f800000L) [L70] return x + x; [L130] RET, EXPR atan_float(x) [L130] float res = atan_float(x); [L132] COND TRUE res != pi_o_2 [L133] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_0621a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 8 SDslu, 46 SDs, 0 SdLazy, 51 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1615 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...