/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/floats-cbmc-regression/float22.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:28:58,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:28:58,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:28:58,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:28:58,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:28:58,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:28:58,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:28:58,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:28:58,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:28:58,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:28:58,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:28:58,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:28:58,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:28:58,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:28:58,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:28:58,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:28:58,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:28:58,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:28:58,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:28:58,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:28:58,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:28:58,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:28:58,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:28:58,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:28:58,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:28:58,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:28:58,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:28:58,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:28:58,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:28:58,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:28:58,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:28:58,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:28:58,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:28:58,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:28:58,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:28:58,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:28:58,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:28:58,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:28:58,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:28:58,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:28:58,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:28:58,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:28:58,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:28:58,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:28:58,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:28:58,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:28:58,351 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:28:58,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:28:58,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:28:58,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:28:58,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:28:58,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:28:58,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:28:58,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:28:58,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:28:58,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:28:58,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:28:58,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:28:58,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:28:58,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:28:58,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:28:58,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:28:58,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:28:58,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:28:58,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:28:58,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:28:58,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:28:58,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:28:58,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:28:58,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:28:58,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:28:58,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:28:58,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:28:58,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:28:58,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:28:58,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:28:58,813 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:28:58,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float22.i [2020-10-28 14:28:58,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92391a9ea/08e9b8efa7e744bd83808ae3dc6225a4/FLAGb887a3e9f [2020-10-28 14:28:59,490 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:28:59,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float22.i [2020-10-28 14:28:59,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92391a9ea/08e9b8efa7e744bd83808ae3dc6225a4/FLAGb887a3e9f [2020-10-28 14:28:59,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92391a9ea/08e9b8efa7e744bd83808ae3dc6225a4 [2020-10-28 14:28:59,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:28:59,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:28:59,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:28:59,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:28:59,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:28:59,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:59" (1/1) ... [2020-10-28 14:28:59,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa736ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:28:59, skipping insertion in model container [2020-10-28 14:28:59,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:28:59" (1/1) ... [2020-10-28 14:28:59,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:28:59,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:29:00,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:00,098 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:29:00,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:00,152 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:29:00,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:00 WrapperNode [2020-10-28 14:29:00,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:00,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:29:00,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:29:00,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:29:00,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:00" (1/1) ... [2020-10-28 14:29:00,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:00" (1/1) ... [2020-10-28 14:29:00,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:00" (1/1) ... [2020-10-28 14:29:00,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:00" (1/1) ... [2020-10-28 14:29:00,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:00" (1/1) ... [2020-10-28 14:29:00,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:00" (1/1) ... [2020-10-28 14:29:00,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:00" (1/1) ... [2020-10-28 14:29:00,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:29:00,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:29:00,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:29:00,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:29:00,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:00" (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 14:29:00,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:29:00,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:29:00,318 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:29:00,318 INFO L138 BoogieDeclarations]: Found implementation of procedure returnsField [2020-10-28 14:29:00,318 INFO L138 BoogieDeclarations]: Found implementation of procedure returnsStructure [2020-10-28 14:29:00,318 INFO L138 BoogieDeclarations]: Found implementation of procedure testOne [2020-10-28 14:29:00,318 INFO L138 BoogieDeclarations]: Found implementation of procedure testTwo [2020-10-28 14:29:00,319 INFO L138 BoogieDeclarations]: Found implementation of procedure testThree [2020-10-28 14:29:00,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:29:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:29:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:29:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:29:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:29:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:29:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:29:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure returnsField [2020-10-28 14:29:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:29:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:29:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:29:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure returnsStructure [2020-10-28 14:29:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:29:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure testOne [2020-10-28 14:29:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:29:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure testTwo [2020-10-28 14:29:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure testThree [2020-10-28 14:29:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:29:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:29:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:29:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:29:00,983 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:29:00,984 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 14:29:00,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:00 BoogieIcfgContainer [2020-10-28 14:29:00,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:29:00,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:29:00,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:29:00,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:29:00,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:28:59" (1/3) ... [2020-10-28 14:29:00,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1c2c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:00, skipping insertion in model container [2020-10-28 14:29:00,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:00" (2/3) ... [2020-10-28 14:29:00,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1c2c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:00, skipping insertion in model container [2020-10-28 14:29:00,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:00" (3/3) ... [2020-10-28 14:29:00,999 INFO L111 eAbstractionObserver]: Analyzing ICFG float22.i [2020-10-28 14:29:01,011 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:29:01,018 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:29:01,034 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:29:01,074 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:29:01,075 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:29:01,075 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:29:01,075 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:29:01,075 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:29:01,075 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:29:01,076 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:29:01,076 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:29:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-28 14:29:01,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:29:01,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:01,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:01,111 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:01,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:01,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1890904611, now seen corresponding path program 1 times [2020-10-28 14:29:01,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:01,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613984577] [2020-10-28 14:29:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:29:01,456 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:29:01,457 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:29:01,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:29:01,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:29:01 BoogieIcfgContainer [2020-10-28 14:29:01,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:29:01,479 INFO L168 Benchmark]: Toolchain (without parser) took 1610.00 ms. Allocated memory is still 157.3 MB. Free memory was 133.5 MB in the beginning and 107.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:01,480 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 103.1 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:29:01,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.06 ms. Allocated memory is still 157.3 MB. Free memory was 132.8 MB in the beginning and 121.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:01,482 INFO L168 Benchmark]: Boogie Preprocessor took 69.73 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 119.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:01,483 INFO L168 Benchmark]: RCFGBuilder took 760.64 ms. Allocated memory is still 157.3 MB. Free memory was 119.5 MB in the beginning and 123.0 MB in the end (delta: -3.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:01,484 INFO L168 Benchmark]: TraceAbstraction took 486.34 ms. Allocated memory is still 157.3 MB. Free memory was 122.6 MB in the beginning and 107.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:01,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 103.1 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 279.06 ms. Allocated memory is still 157.3 MB. Free memory was 132.8 MB in the beginning and 121.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.73 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 119.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 760.64 ms. Allocated memory is still 157.3 MB. Free memory was 119.5 MB in the beginning and 123.0 MB in the end (delta: -3.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 486.34 ms. Allocated memory is still 157.3 MB. Free memory was 122.6 MB in the beginning and 107.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 130. Possible FailurePath: [L179] CALL testOne() [L139] ieee754_float f1, f2; [L141] CALL, EXPR returnsStructure(0) [L128] ieee754_float c; [L130] c.ieee.negative = index & 0x1 [L131] c.ieee.exponent = 0 [L132] c.ieee.mantissa = 0 [L134] return c; [L134] return c; [L141] RET, EXPR returnsStructure(0) [L141] f1 = returnsStructure(0) [L142] CALL, EXPR returnsStructure(1) [L128] ieee754_float c; [L130] c.ieee.negative = index & 0x1 [L131] c.ieee.exponent = 0 [L132] c.ieee.mantissa = 0 [L134] return c; [L134] return c; [L142] RET, EXPR returnsStructure(1) [L142] f2 = returnsStructure(1) [L144] EXPR f1.ieee.negative [L144] EXPR f2.ieee.negative [L144] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L144] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "float22.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...