/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:07:55,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:07:55,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:07:55,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:07:55,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:07:55,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:07:55,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:07:55,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:07:55,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:07:55,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:07:55,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:07:55,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:07:55,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:07:55,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:07:55,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:07:55,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:07:55,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:07:55,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:07:55,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:07:55,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:07:55,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:07:55,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:07:55,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:07:55,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:07:55,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:07:55,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:07:55,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:07:55,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:07:55,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:07:55,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:07:55,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:07:55,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:07:55,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:07:55,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:07:55,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:07:55,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:07:55,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:07:55,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:07:55,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:07:55,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:07:55,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:07:55,899 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:07:55,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:07:55,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:07:55,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:07:55,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:07:55,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:07:55,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:07:55,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:07:55,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:07:55,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:07:55,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:07:55,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:07:55,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:07:55,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:07:55,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:07:55,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:07:55,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:07:55,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:07:55,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:07:55,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:07:55,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:07:55,905 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:07:56,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:07:56,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:07:56,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:07:56,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:07:56,333 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:07:56,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-12-23 06:07:56,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/47145ade6/45ebadc54b4243f380b6f78d0da49073/FLAG53c7728b3 [2020-12-23 06:07:57,124 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:07:57,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-12-23 06:07:57,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/47145ade6/45ebadc54b4243f380b6f78d0da49073/FLAG53c7728b3 [2020-12-23 06:07:57,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/47145ade6/45ebadc54b4243f380b6f78d0da49073 [2020-12-23 06:07:57,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:07:57,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:07:57,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:07:57,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:07:57,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:07:57,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d9f9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57, skipping insertion in model container [2020-12-23 06:07:57,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:07:57,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:07:57,683 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~x1~0,] [2020-12-23 06:07:57,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:07:57,710 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:07:57,722 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~x1~0,] [2020-12-23 06:07:57,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:07:57,741 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:07:57,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57 WrapperNode [2020-12-23 06:07:57,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:07:57,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:07:57,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:07:57,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:07:57,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:07:57,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:07:57,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:07:57,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:07:57,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (1/1) ... [2020-12-23 06:07:57,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:07:57,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:07:57,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:07:57,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:07:57,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 06:07:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:07:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:07:57,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:07:57,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:07:58,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:07:58,150 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-23 06:07:58,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:58 BoogieIcfgContainer [2020-12-23 06:07:58,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:07:58,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:07:58,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:07:58,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:07:58,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:07:57" (1/3) ... [2020-12-23 06:07:58,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a00626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:07:58, skipping insertion in model container [2020-12-23 06:07:58,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:57" (2/3) ... [2020-12-23 06:07:58,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a00626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:07:58, skipping insertion in model container [2020-12-23 06:07:58,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:58" (3/3) ... [2020-12-23 06:07:58,175 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2020-12-23 06:07:58,183 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:07:58,188 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:07:58,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:07:58,260 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:07:58,260 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:07:58,260 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:07:58,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:07:58,260 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:07:58,261 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:07:58,261 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:07:58,261 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:07:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-23 06:07:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 06:07:58,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:58,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 06:07:58,301 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:07:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:58,309 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-12-23 06:07:58,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:58,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542333258] [2020-12-23 06:07:58,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:07:58,505 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:07:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:07:58,551 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:07:58,585 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:07:58,586 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:07:58,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:07:58,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:07:58 BoogieIcfgContainer [2020-12-23 06:07:58,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:07:58,617 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:07:58,617 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:07:58,618 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:07:58,618 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:58" (3/4) ... [2020-12-23 06:07:58,629 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:07:58,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:07:58,632 INFO L168 Benchmark]: Toolchain (without parser) took 1146.10 ms. Allocated memory is still 157.3 MB. Free memory was 132.8 MB in the beginning and 131.9 MB in the end (delta: 913.5 kB). Peak memory consumption was 799.3 kB. Max. memory is 8.0 GB. [2020-12-23 06:07:58,635 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:07:58,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.25 ms. Allocated memory is still 157.3 MB. Free memory was 132.4 MB in the beginning and 123.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:58,638 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.69 ms. Allocated memory is still 157.3 MB. Free memory was 123.0 MB in the beginning and 121.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:58,639 INFO L168 Benchmark]: Boogie Preprocessor took 24.04 ms. Allocated memory is still 157.3 MB. Free memory was 121.7 MB in the beginning and 120.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:58,640 INFO L168 Benchmark]: RCFGBuilder took 349.35 ms. Allocated memory is still 157.3 MB. Free memory was 120.7 MB in the beginning and 110.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:58,641 INFO L168 Benchmark]: TraceAbstraction took 453.44 ms. Allocated memory is still 157.3 MB. Free memory was 109.8 MB in the beginning and 132.5 MB in the end (delta: -22.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:07:58,643 INFO L168 Benchmark]: Witness Printer took 11.80 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 131.9 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:58,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 157.3 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 256.25 ms. Allocated memory is still 157.3 MB. Free memory was 132.4 MB in the beginning and 123.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.69 ms. Allocated memory is still 157.3 MB. Free memory was 123.0 MB in the beginning and 121.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.04 ms. Allocated memory is still 157.3 MB. Free memory was 121.7 MB in the beginning and 120.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 349.35 ms. Allocated memory is still 157.3 MB. Free memory was 120.7 MB in the beginning and 110.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 453.44 ms. Allocated memory is still 157.3 MB. Free memory was 109.8 MB in the beginning and 132.5 MB in the end (delta: -22.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 11.80 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 131.9 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, 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=11occurred 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, 6 NumberOfCodeBlocks, 6 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...