/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/cast_union_tight.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:27:00,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:27:00,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:27:00,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:27:00,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:27:00,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:27:00,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:27:00,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:27:00,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:27:00,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:27:00,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:27:00,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:27:00,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:27:00,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:27:00,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:27:00,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:27:00,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:27:00,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:27:00,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:27:00,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:27:00,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:27:00,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:27:00,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:27:00,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:27:00,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:27:00,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:27:00,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:27:00,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:27:00,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:27:00,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:27:00,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:27:00,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:27:00,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:27:00,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:27:00,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:27:00,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:27:00,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:27:00,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:27:00,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:27:00,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:27:00,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:27:00,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:27:00,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:27:00,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:27:00,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:27:00,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:27:00,897 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:27:00,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:27:00,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:27:00,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:27:00,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:27:00,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:27:00,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:27:00,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:27:00,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:27:00,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:27:00,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:27:00,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:27:00,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:27:00,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:27:00,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:27:00,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:27:00,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:27:00,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:27:00,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:27:00,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:27:00,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:27:00,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:27:00,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:27:00,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:27:00,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:27:00,902 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.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:27:01,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:27:01,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:27:01,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:27:01,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:27:01,276 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:27:01,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_tight.c [2020-10-12 15:27:01,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb961b993/c85281fbfebc474ea9415c7ca86f4a03/FLAG9c5666c5b [2020-10-12 15:27:01,864 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:27:01,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/cast_union_tight.c [2020-10-12 15:27:01,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb961b993/c85281fbfebc474ea9415c7ca86f4a03/FLAG9c5666c5b [2020-10-12 15:27:02,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb961b993/c85281fbfebc474ea9415c7ca86f4a03 [2020-10-12 15:27:02,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:27:02,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:27:02,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:27:02,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:27:02,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:27:02,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:27:02" (1/1) ... [2020-10-12 15:27:02,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02, skipping insertion in model container [2020-10-12 15:27:02,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:27:02" (1/1) ... [2020-10-12 15:27:02,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:27:02,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:27:02,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:27:02,469 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:27:02,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:27:02,519 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:27:02,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02 WrapperNode [2020-10-12 15:27:02,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:27:02,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:27:02,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:27:02,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:27:02,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02" (1/1) ... [2020-10-12 15:27:02,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02" (1/1) ... [2020-10-12 15:27:02,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02" (1/1) ... [2020-10-12 15:27:02,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02" (1/1) ... [2020-10-12 15:27:02,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02" (1/1) ... [2020-10-12 15:27:02,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02" (1/1) ... [2020-10-12 15:27:02,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02" (1/1) ... [2020-10-12 15:27:02,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:27:02,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:27:02,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:27:02,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:27:02,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:27:02,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:27:02,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:27:02,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 15:27:02,735 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-10-12 15:27:02,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:27:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:27:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:27:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 15:27:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-10-12 15:27:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:27:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:27:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:27:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:27:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:27:02,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:27:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:27:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:27:02,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:27:03,037 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:27:03,037 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 15:27:03,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:27:03 BoogieIcfgContainer [2020-10-12 15:27:03,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:27:03,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:27:03,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:27:03,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:27:03,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:27:02" (1/3) ... [2020-10-12 15:27:03,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd21b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:27:03, skipping insertion in model container [2020-10-12 15:27:03,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:27:02" (2/3) ... [2020-10-12 15:27:03,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd21b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:27:03, skipping insertion in model container [2020-10-12 15:27:03,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:27:03" (3/3) ... [2020-10-12 15:27:03,053 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2020-10-12 15:27:03,067 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:27:03,076 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:27:03,093 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:27:03,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:27:03,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:27:03,125 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:27:03,125 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:27:03,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:27:03,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:27:03,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:27:03,126 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:27:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-12 15:27:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 15:27:03,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:27:03,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:27:03,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:27:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:27:03,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1809195508, now seen corresponding path program 1 times [2020-10-12 15:27:03,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:27:03,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135005331] [2020-10-12 15:27:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:27:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:27:03,351 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:27:03,352 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:27:03,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:27:03,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:27:03 BoogieIcfgContainer [2020-10-12 15:27:03,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:27:03,382 INFO L168 Benchmark]: Toolchain (without parser) took 1165.33 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.4 MB in the beginning and 151.1 MB in the end (delta: -49.6 MB). Peak memory consumption was 6.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:27:03,384 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:27:03,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.40 ms. Allocated memory is still 146.8 MB. Free memory was 101.2 MB in the beginning and 90.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:27:03,387 INFO L168 Benchmark]: Boogie Preprocessor took 139.18 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 90.8 MB in the beginning and 180.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:27:03,388 INFO L168 Benchmark]: RCFGBuilder took 383.55 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 164.6 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:27:03,389 INFO L168 Benchmark]: TraceAbstraction took 333.80 ms. Allocated memory is still 202.9 MB. Free memory was 163.9 MB in the beginning and 151.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:27:03,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.40 ms. Allocated memory is still 146.8 MB. Free memory was 101.2 MB in the beginning and 90.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.18 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 90.8 MB in the beginning and 180.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 383.55 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 164.6 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 333.80 ms. Allocated memory is still 202.9 MB. Free memory was 163.9 MB in the beginning and 151.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 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...