/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --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-eb0fd7c [2020-09-21 11:18:09,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:18:09,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:18:09,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:18:09,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:18:09,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:18:09,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:18:09,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:18:09,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:18:09,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:18:09,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:18:09,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:18:09,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:18:09,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:18:09,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:18:09,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:18:09,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:18:09,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:18:09,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:18:09,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:18:09,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:18:09,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:18:09,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:18:09,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:18:09,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:18:09,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:18:09,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:18:09,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:18:09,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:18:09,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:18:09,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:18:09,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:18:09,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:18:09,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:18:09,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:18:09,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:18:09,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:18:09,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:18:09,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:18:09,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:18:09,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:18:09,751 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 [2020-09-21 11:18:09,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:18:09,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:18:09,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:18:09,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:18:09,796 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:18:09,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:18:09,796 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:18:09,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:18:09,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:18:09,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:18:09,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:18:09,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:18:09,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:18:09,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:18:09,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:18:09,799 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:18:09,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:18:09,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:18:09,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:18:09,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:18:09,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:18:09,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:18:09,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:18:09,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:18:09,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:18:09,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:18:09,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:18:09,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:18:09,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:18:09,802 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:18:10,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:18:10,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:18:10,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:18:10,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:18:10,367 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:18:10,368 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_tight.c [2020-09-21 11:18:10,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aac0c3df1/0170facba84e45d39b3100ae27f82ebf/FLAG3120a9020 [2020-09-21 11:18:10,988 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:18:10,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/cast_union_tight.c [2020-09-21 11:18:10,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aac0c3df1/0170facba84e45d39b3100ae27f82ebf/FLAG3120a9020 [2020-09-21 11:18:11,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aac0c3df1/0170facba84e45d39b3100ae27f82ebf [2020-09-21 11:18:11,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:18:11,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:18:11,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:11,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:18:11,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:18:11,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:11" (1/1) ... [2020-09-21 11:18:11,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231fe863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11, skipping insertion in model container [2020-09-21 11:18:11,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:18:11" (1/1) ... [2020-09-21 11:18:11,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:18:11,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:18:11,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:11,618 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:18:11,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:18:11,671 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:18:11,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11 WrapperNode [2020-09-21 11:18:11,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:18:11,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:18:11,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:18:11,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:18:11,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11" (1/1) ... [2020-09-21 11:18:11,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11" (1/1) ... [2020-09-21 11:18:11,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11" (1/1) ... [2020-09-21 11:18:11,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11" (1/1) ... [2020-09-21 11:18:11,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11" (1/1) ... [2020-09-21 11:18:11,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11" (1/1) ... [2020-09-21 11:18:11,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11" (1/1) ... [2020-09-21 11:18:11,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:18:11,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:18:11,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:18:11,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:18:11,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11" (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 [2020-09-21 11:18:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:18:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:18:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:18:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-09-21 11:18:11,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:18:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:18:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:18:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:18:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-09-21 11:18:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:18:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:18:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:18:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 11:18:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:18:11,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:18:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:18:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:18:11,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 11:18:12,219 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:18:12,219 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:18:12,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:12 BoogieIcfgContainer [2020-09-21 11:18:12,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:18:12,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:18:12,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:18:12,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:18:12,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:18:11" (1/3) ... [2020-09-21 11:18:12,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f47ebdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:12, skipping insertion in model container [2020-09-21 11:18:12,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:18:11" (2/3) ... [2020-09-21 11:18:12,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f47ebdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:18:12, skipping insertion in model container [2020-09-21 11:18:12,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:18:12" (3/3) ... [2020-09-21 11:18:12,234 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2020-09-21 11:18:12,249 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:18:12,259 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:18:12,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:18:12,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:18:12,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:18:12,326 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:18:12,327 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:18:12,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:18:12,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:18:12,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:18:12,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:18:12,357 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-09-21 11:18:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 11:18:12,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:18:12,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:18:12,368 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:18:12,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:18:12,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1809195508, now seen corresponding path program 1 times [2020-09-21 11:18:12,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:18:12,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610668090] [2020-09-21 11:18:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:18:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:18:12,573 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:18:12,574 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:18:12,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:18:12,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:18:12 BoogieIcfgContainer [2020-09-21 11:18:12,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:18:12,606 INFO L168 Benchmark]: Toolchain (without parser) took 1271.06 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 103.8 MB in the beginning and 152.2 MB in the end (delta: -48.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:12,607 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:18:12,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.28 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 92.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:12,609 INFO L168 Benchmark]: Boogie Preprocessor took 147.16 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.8 MB in the beginning and 181.8 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:12,610 INFO L168 Benchmark]: RCFGBuilder took 404.19 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 165.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:12,611 INFO L168 Benchmark]: TraceAbstraction took 375.57 ms. Allocated memory is still 203.9 MB. Free memory was 165.8 MB in the beginning and 152.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:18:12,615 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 334.28 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 92.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.16 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.8 MB in the beginning and 181.8 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.19 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 165.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 375.57 ms. Allocated memory is still 203.9 MB. Free memory was 165.8 MB in the beginning and 152.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 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...