/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/float-benchs/cast_union_tight.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:18:48,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:18:48,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:18:48,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:18:48,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:18:48,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:18:48,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:18:48,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:18:48,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:18:48,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:18:48,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:18:48,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:18:48,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:18:48,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:18:48,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:18:48,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:18:48,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:18:48,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:18:48,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:18:48,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:18:48,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:18:48,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:18:48,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:18:48,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:18:48,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:18:48,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:18:48,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:18:48,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:18:48,566 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 17:18:48,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:18:48,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:18:48,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:18:48,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:18:48,597 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:18:48,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:18:48,597 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:18:48,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:18:48,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:18:48,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:18:48,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:18:48,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:18:48,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:18:48,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:18:48,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:18:48,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:18:48,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:18:48,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:18:48,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:18:48,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:18:48,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:18:48,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:18:48,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:18:48,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:18:48,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:18:48,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:18:48,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:18:48,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:18:48,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:18:48,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:18:48,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:18:48,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:18:48,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:18:48,985 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:18:48,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_tight.c [2021-02-19 17:18:49,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4498fbd30/45554caacb3a42d4bbc53c6f37e07e11/FLAG3294b3040 [2021-02-19 17:18:49,720 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:18:49,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cast_union_tight.c [2021-02-19 17:18:49,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4498fbd30/45554caacb3a42d4bbc53c6f37e07e11/FLAG3294b3040 [2021-02-19 17:18:50,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4498fbd30/45554caacb3a42d4bbc53c6f37e07e11 [2021-02-19 17:18:50,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:18:50,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:18:50,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:18:50,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:18:50,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:18:50,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:18:50" (1/1) ... [2021-02-19 17:18:50,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66dbdb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50, skipping insertion in model container [2021-02-19 17:18:50,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:18:50" (1/1) ... [2021-02-19 17:18:50,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:18:50,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:18:50,301 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cast_union_tight.c[495,508] [2021-02-19 17:18:50,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:18:50,329 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:18:50,343 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cast_union_tight.c[495,508] [2021-02-19 17:18:50,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:18:50,369 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:18:50,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50 WrapperNode [2021-02-19 17:18:50,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:18:50,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:18:50,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:18:50,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:18:50,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50" (1/1) ... [2021-02-19 17:18:50,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50" (1/1) ... [2021-02-19 17:18:50,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50" (1/1) ... [2021-02-19 17:18:50,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50" (1/1) ... [2021-02-19 17:18:50,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50" (1/1) ... [2021-02-19 17:18:50,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50" (1/1) ... [2021-02-19 17:18:50,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50" (1/1) ... [2021-02-19 17:18:50,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:18:50,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:18:50,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:18:50,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:18:50,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50" (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 17:18:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:18:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:18:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:18:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:18:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2021-02-19 17:18:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:18:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:18:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:18:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:18:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:18:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:18:50,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:18:50,508 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2021-02-19 17:18:50,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:18:50,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:18:50,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-19 17:18:50,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:18:50,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:18:50,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:18:50,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:18:50,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:18:50,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-19 17:18:50,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:18:50,857 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 17:18:50,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:18:50 BoogieIcfgContainer [2021-02-19 17:18:50,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:18:50,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:18:50,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:18:50,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:18:50,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:18:50" (1/3) ... [2021-02-19 17:18:50,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6b03ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:18:50, skipping insertion in model container [2021-02-19 17:18:50,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:18:50" (2/3) ... [2021-02-19 17:18:50,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6b03ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:18:50, skipping insertion in model container [2021-02-19 17:18:50,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:18:50" (3/3) ... [2021-02-19 17:18:50,869 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2021-02-19 17:18:50,876 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:18:50,881 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:18:50,902 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:18:50,930 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:18:50,931 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:18:50,931 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:18:50,931 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:18:50,931 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:18:50,931 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:18:50,931 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:18:50,932 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:18:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-02-19 17:18:50,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-19 17:18:50,956 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:18:50,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:18:50,957 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:18:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:18:50,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1202497590, now seen corresponding path program 1 times [2021-02-19 17:18:50,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:18:50,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821294871] [2021-02-19 17:18:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:18:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:18:51,160 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:18:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:18:51,216 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:18:51,270 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:18:51,271 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:18:51,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:18:51,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:18:51 BoogieIcfgContainer [2021-02-19 17:18:51,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:18:51,335 INFO L168 Benchmark]: Toolchain (without parser) took 1227.78 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 116.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:18:51,338 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:18:51,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.26 ms. Allocated memory is still 153.1 MB. Free memory was 127.3 MB in the beginning and 117.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:18:51,342 INFO L168 Benchmark]: Boogie Preprocessor took 38.95 ms. Allocated memory is still 153.1 MB. Free memory was 117.0 MB in the beginning and 115.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:18:51,343 INFO L168 Benchmark]: RCFGBuilder took 447.97 ms. Allocated memory is still 153.1 MB. Free memory was 115.4 MB in the beginning and 132.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:18:51,345 INFO L168 Benchmark]: TraceAbstraction took 469.53 ms. Allocated memory is still 153.1 MB. Free memory was 132.2 MB in the beginning and 116.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:18:51,357 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 153.1 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.26 ms. Allocated memory is still 153.1 MB. Free memory was 127.3 MB in the beginning and 117.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.95 ms. Allocated memory is still 153.1 MB. Free memory was 117.0 MB in the beginning and 115.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 447.97 ms. Allocated memory is still 153.1 MB. Free memory was 115.4 MB in the beginning and 132.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 469.53 ms. Allocated memory is still 153.1 MB. Free memory was 132.2 MB in the beginning and 116.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 23, overapproximation of bitwiseXor at line 22. Possible FailurePath: [L28] int a; [L29] double r; [L31] a = __VERIFIER_nondet_int() [L33] CALL, EXPR cast(a) VAL [\old(i)=-1] [L18] union u x, y; [L19] x.i[0] = 0x43300000 [L20] EXPR x.i[0] [L20] y.i[0] = x.i[0] [L21] x.i[1] = 0x80000000 [L22] EXPR x.i[1] [L22] y.i[1] = i ^ x.i[1] [L23] EXPR y.d [L23] EXPR x.d [L23] return y.d - x.d; [L23] return y.d - x.d; [L23] return y.d - x.d; VAL [\old(i)=-1, i=-1] [L33] RET, EXPR cast(a) VAL [a=-1, cast(a)=1127219212] [L33] r = cast(a) [L34] CALL __VERIFIER_assert(r == a) VAL [\old(cond)=0] [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 26 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=23occurred 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, 15 NumberOfCodeBlocks, 15 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...