/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-89f541c [2020-08-28 00:07:11,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 00:07:11,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 00:07:11,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 00:07:11,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 00:07:11,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 00:07:11,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 00:07:11,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 00:07:11,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 00:07:11,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 00:07:11,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 00:07:11,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 00:07:11,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 00:07:11,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 00:07:11,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 00:07:11,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 00:07:11,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 00:07:11,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 00:07:11,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 00:07:11,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 00:07:11,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 00:07:11,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 00:07:11,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 00:07:11,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 00:07:11,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 00:07:11,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 00:07:11,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 00:07:11,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 00:07:11,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 00:07:11,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 00:07:11,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 00:07:11,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 00:07:11,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 00:07:11,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 00:07:11,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 00:07:11,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 00:07:11,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 00:07:11,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 00:07:11,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 00:07:11,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 00:07:11,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 00:07:11,929 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 [2020-08-28 00:07:11,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 00:07:11,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 00:07:11,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 00:07:11,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 00:07:11,981 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 00:07:11,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 00:07:11,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 00:07:11,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 00:07:11,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 00:07:11,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 00:07:11,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 00:07:11,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 00:07:11,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 00:07:11,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 00:07:11,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 00:07:11,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 00:07:11,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 00:07:11,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 00:07:11,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 00:07:11,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 00:07:11,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 00:07:11,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 00:07:11,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 00:07:11,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 00:07:11,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 00:07:11,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 00:07:11,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 00:07:11,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 00:07:11,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 00:07:11,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-28 00:07:12,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 00:07:12,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 00:07:12,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 00:07:12,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 00:07:12,543 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 00:07:12,544 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_tight.c [2020-08-28 00:07:12,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e7f42f2b/cfa9745685094e31ba2e2fdfc7eefec6/FLAG516dd29ca [2020-08-28 00:07:13,180 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 00:07:13,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/cast_union_tight.c [2020-08-28 00:07:13,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e7f42f2b/cfa9745685094e31ba2e2fdfc7eefec6/FLAG516dd29ca [2020-08-28 00:07:13,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e7f42f2b/cfa9745685094e31ba2e2fdfc7eefec6 [2020-08-28 00:07:13,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 00:07:13,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 00:07:13,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 00:07:13,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 00:07:13,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 00:07:13,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 12:07:13" (1/1) ... [2020-08-28 00:07:13,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13, skipping insertion in model container [2020-08-28 00:07:13,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 12:07:13" (1/1) ... [2020-08-28 00:07:13,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 00:07:13,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 00:07:13,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 00:07:13,810 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 00:07:13,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 00:07:13,865 INFO L208 MainTranslator]: Completed translation [2020-08-28 00:07:13,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13 WrapperNode [2020-08-28 00:07:13,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 00:07:13,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 00:07:13,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 00:07:13,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 00:07:13,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13" (1/1) ... [2020-08-28 00:07:13,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13" (1/1) ... [2020-08-28 00:07:13,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13" (1/1) ... [2020-08-28 00:07:13,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13" (1/1) ... [2020-08-28 00:07:13,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13" (1/1) ... [2020-08-28 00:07:13,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13" (1/1) ... [2020-08-28 00:07:13,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13" (1/1) ... [2020-08-28 00:07:13,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 00:07:13,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 00:07:13,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 00:07:13,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 00:07:14,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13" (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 [2020-08-28 00:07:14,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 00:07:14,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 00:07:14,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-28 00:07:14,079 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-08-28 00:07:14,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 00:07:14,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 00:07:14,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-28 00:07:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-28 00:07:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-08-28 00:07:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-28 00:07:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-28 00:07:14,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-28 00:07:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-28 00:07:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-28 00:07:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 00:07:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 00:07:14,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 00:07:14,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-28 00:07:14,347 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 00:07:14,348 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-28 00:07:14,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 12:07:14 BoogieIcfgContainer [2020-08-28 00:07:14,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 00:07:14,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 00:07:14,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 00:07:14,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 00:07:14,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 12:07:13" (1/3) ... [2020-08-28 00:07:14,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a490ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 12:07:14, skipping insertion in model container [2020-08-28 00:07:14,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 12:07:13" (2/3) ... [2020-08-28 00:07:14,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a490ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 12:07:14, skipping insertion in model container [2020-08-28 00:07:14,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 12:07:14" (3/3) ... [2020-08-28 00:07:14,363 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2020-08-28 00:07:14,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 00:07:14,392 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 00:07:14,420 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 00:07:14,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 00:07:14,464 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 00:07:14,464 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 00:07:14,464 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 00:07:14,464 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 00:07:14,465 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 00:07:14,465 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 00:07:14,465 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 00:07:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-28 00:07:14,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-28 00:07:14,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 00:07:14,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-28 00:07:14,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 00:07:14,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 00:07:14,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1809195508, now seen corresponding path program 1 times [2020-08-28 00:07:14,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 00:07:14,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586808024] [2020-08-28 00:07:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 00:07:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-28 00:07:14,697 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-28 00:07:14,698 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-28 00:07:14,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 00:07:14,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 12:07:14 BoogieIcfgContainer [2020-08-28 00:07:14,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-28 00:07:14,730 INFO L168 Benchmark]: Toolchain (without parser) took 1183.43 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 104.4 MB in the beginning and 152.7 MB in the end (delta: -48.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-08-28 00:07:14,731 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-28 00:07:14,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.29 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 93.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-28 00:07:14,734 INFO L168 Benchmark]: Boogie Preprocessor took 131.51 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.7 MB in the beginning and 181.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-28 00:07:14,735 INFO L168 Benchmark]: RCFGBuilder took 354.19 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 166.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-08-28 00:07:14,736 INFO L168 Benchmark]: TraceAbstraction took 371.48 ms. Allocated memory is still 203.9 MB. Free memory was 165.7 MB in the beginning and 153.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-28 00:07:14,740 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.29 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 93.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.51 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.7 MB in the beginning and 181.4 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 354.19 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 166.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 371.48 ms. Allocated memory is still 203.9 MB. Free memory was 165.7 MB in the beginning and 153.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21, overapproximation of bitwiseXor at line 20. Possible FailurePath: [L26] int a; [L27] double r; [L29] a = __VERIFIER_nondet_int() [L31] CALL, EXPR cast(a) [L16] union u x, y; [L17] x.i[0] = 0x43300000 [L18] EXPR x.i[0] [L18] y.i[0] = x.i[0] [L19] x.i[1] = 0x80000000 [L20] EXPR x.i[1] [L20] y.i[1] = i ^ x.i[1] [L21] EXPR y.d [L21] EXPR x.d [L21] return y.d - x.d; [L21] return y.d - x.d; [L21] return y.d - x.d; [L31] RET, EXPR cast(a) [L31] r = cast(a) [L32] CALL __VERIFIER_assert(r == a) [L7] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 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=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...