/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:18:19,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:18:19,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:18:19,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:18:19,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:18:19,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:18:19,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:18:19,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:18:19,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:18:19,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:18:19,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:18:19,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:18:19,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:18:19,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:18:19,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:18:19,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:18:19,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:18:19,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:18:19,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:18:19,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:18:19,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:18:19,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:18:19,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:18:19,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:18:19,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-19 17:18:19,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-19 17:18:19,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-19 17:18:19,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-19 17:18:19,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-19 17:18:19,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-19 17:18:19,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 17:18:19,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 17:18:19,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 17:18:19,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 17:18:19,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 17:18:19,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 17:18:19,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 17:18:19,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 17:18:19,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:18:19,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:18:19,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:18:19,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-19 17:18:19,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:18:19,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:18:19,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:18:19,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:18:19,379 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:18:19,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:18:19,379 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:18:19,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:18:19,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:18:19,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:18:19,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:18:19,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:18:19,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:18:19,381 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:18:19,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:18:19,382 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:18:19,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:18:19,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:18:19,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:18:19,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:18:19,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:18:19,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:18:19,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:18:19,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:18:19,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:18:19,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:18:19,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:18:19,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:18:19,385 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:18:19,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:18:19,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:18:19,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:18:19,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:18:19,815 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:18:19,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i [2021-02-19 17:18:19,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98658a225/1a78c9ce361b4d38be9965c8002b52ce/FLAG8e8be0613 [2021-02-19 17:18:20,427 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:18:20,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i [2021-02-19 17:18:20,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98658a225/1a78c9ce361b4d38be9965c8002b52ce/FLAG8e8be0613 [2021-02-19 17:18:20,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98658a225/1a78c9ce361b4d38be9965c8002b52ce [2021-02-19 17:18:20,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:18:20,810 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:18:20,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:18:20,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:18:20,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:18:20,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:18:20" (1/1) ... [2021-02-19 17:18:20,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51188f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:20, skipping insertion in model container [2021-02-19 17:18:20,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:18:20" (1/1) ... [2021-02-19 17:18:20,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:18:20,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:18:21,023 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-02-19 17:18:21,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:18:21,040 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:18:21,060 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i[2011,2024] [2021-02-19 17:18:21,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:18:21,079 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:18:21,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:21 WrapperNode [2021-02-19 17:18:21,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:18:21,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:18:21,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:18:21,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:18:21,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:21" (1/1) ... [2021-02-19 17:18:21,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:21" (1/1) ... [2021-02-19 17:18:21,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:21" (1/1) ... [2021-02-19 17:18:21,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:21" (1/1) ... [2021-02-19 17:18:21,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:21" (1/1) ... [2021-02-19 17:18:21,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:21" (1/1) ... [2021-02-19 17:18:21,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:21" (1/1) ... [2021-02-19 17:18:21,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:18:21,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:18:21,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:18:21,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:18:21,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-19 17:18:21,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:18:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:18:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:18:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure f00 [2021-02-19 17:18:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:18:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:18:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:18:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-19 17:18:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-19 17:18:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:18:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:18:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure f00 [2021-02-19 17:18:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-19 17:18:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:18:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:18:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:18:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:18:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:18:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:18:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-19 17:18:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:18:21,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:18:21,489 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 17:18:21,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:18:21 BoogieIcfgContainer [2021-02-19 17:18:21,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:18:21,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:18:21,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:18:21,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:18:21,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:18:20" (1/3) ... [2021-02-19 17:18:21,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1eadc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:18:21, skipping insertion in model container [2021-02-19 17:18:21,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:21" (2/3) ... [2021-02-19 17:18:21,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1eadc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:18:21, skipping insertion in model container [2021-02-19 17:18:21,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:18:21" (3/3) ... [2021-02-19 17:18:21,499 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2021-02-19 17:18:21,506 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:18:21,511 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:18:21,562 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:18:21,625 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:18:21,625 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:18:21,625 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:18:21,625 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:18:21,625 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:18:21,626 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:18:21,626 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:18:21,626 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:18:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-02-19 17:18:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-02-19 17:18:21,645 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:18:21,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:18:21,646 INFO L428 AbstractCegarLoop]: === Iteration 1 === [f00Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:18:21,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:18:21,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1882624875, now seen corresponding path program 1 times [2021-02-19 17:18:21,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:18:21,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015365344] [2021-02-19 17:18:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:18:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:18:21,800 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:18:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:18:21,873 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:18:21,920 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:18:21,921 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:18:21,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:18:21,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:18:21 BoogieIcfgContainer [2021-02-19 17:18:21,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:18:21,967 INFO L168 Benchmark]: Toolchain (without parser) took 1166.43 ms. Allocated memory is still 155.2 MB. Free memory was 131.0 MB in the beginning and 126.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:18:21,970 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:18:21,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.59 ms. Allocated memory is still 155.2 MB. Free memory was 130.0 MB in the beginning and 119.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:18:21,973 INFO L168 Benchmark]: Boogie Preprocessor took 35.73 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 118.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:18:21,974 INFO L168 Benchmark]: RCFGBuilder took 373.82 ms. Allocated memory is still 155.2 MB. Free memory was 118.3 MB in the beginning and 104.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:18:21,974 INFO L168 Benchmark]: TraceAbstraction took 470.49 ms. Allocated memory is still 155.2 MB. Free memory was 104.2 MB in the beginning and 126.9 MB in the end (delta: -22.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:18:21,981 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 155.2 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.59 ms. Allocated memory is still 155.2 MB. Free memory was 130.0 MB in the beginning and 119.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.73 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 118.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 373.82 ms. Allocated memory is still 155.2 MB. Free memory was 118.3 MB in the beginning and 104.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 470.49 ms. Allocated memory is still 155.2 MB. Free memory was 104.2 MB in the beginning and 126.9 MB in the end (delta: -22.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 114]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 122, overapproximation of someBinaryArithmeticFLOAToperation at line 111. Possible FailurePath: [L122] CALL f00(-0x1.6b890ep+29, 0x1.6b890ep+29) VAL [\old(b)=762388928] [L111] float sum = a + b; [L112] union mix m; [L113] m.f = sum [L114] EXPR m.i VAL [\old(a)=2147483652, \old(b)=762388928, a=2147483652, b=762388928, m={3:0}, m.i=2147483648, sum=2147483654] [L114] COND TRUE !(m.i != 0x80000000) [L114] reach_error() VAL [\old(a)=2147483652, \old(b)=762388928, a=2147483652, b=762388928, m={3:0}, sum=2147483654] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, 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=18occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 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...