/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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:04:25,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:04:25,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:04:25,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:04:25,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:04:25,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:04:25,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:04:25,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:04:25,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:04:25,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:04:25,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:04:25,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:04:25,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:04:25,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:04:25,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:04:25,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:04:25,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:04:25,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:04:25,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:04:25,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:04:25,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:04:25,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:04:25,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:04:25,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:04:25,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:04:25,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:04:25,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:04:25,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:04:25,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:04:25,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:04:25,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:04:25,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:04:25,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:04:25,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:04:25,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:04:25,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:04:25,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:04:25,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:04:25,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:04:25,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:04:25,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:04:25,951 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 [2020-09-25 11:04:25,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:04:25,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:04:26,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:04:26,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:04:26,000 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:04:26,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:04:26,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:04:26,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:04:26,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:04:26,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:04:26,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:04:26,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:04:26,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:04:26,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:04:26,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:04:26,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:04:26,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:04:26,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:04:26,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:04:26,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:04:26,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:04:26,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:04:26,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:04:26,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:04:26,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:04:26,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:04:26,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:04:26,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:04:26,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:04:26,006 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.2;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:04:26,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:04:26,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:04:26,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:04:26,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:04:26,509 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:04:26,510 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float12.c [2020-09-25 11:04:26,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4defc6f12/a7d02d744e1e423883aea7636a38e20b/FLAG9a484aff9 [2020-09-25 11:04:27,109 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:04:27,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float12.c [2020-09-25 11:04:27,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4defc6f12/a7d02d744e1e423883aea7636a38e20b/FLAG9a484aff9 [2020-09-25 11:04:27,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4defc6f12/a7d02d744e1e423883aea7636a38e20b [2020-09-25 11:04:27,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:04:27,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:04:27,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:04:27,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:04:27,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:04:27,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:04:27" (1/1) ... [2020-09-25 11:04:27,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1aada5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27, skipping insertion in model container [2020-09-25 11:04:27,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:04:27" (1/1) ... [2020-09-25 11:04:27,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:04:27,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:04:27,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:04:27,745 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:04:27,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:04:27,787 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:04:27,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27 WrapperNode [2020-09-25 11:04:27,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:04:27,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:04:27,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:04:27,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:04:27,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27" (1/1) ... [2020-09-25 11:04:27,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27" (1/1) ... [2020-09-25 11:04:27,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27" (1/1) ... [2020-09-25 11:04:27,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27" (1/1) ... [2020-09-25 11:04:27,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27" (1/1) ... [2020-09-25 11:04:27,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27" (1/1) ... [2020-09-25 11:04:27,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27" (1/1) ... [2020-09-25 11:04:27,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:04:27,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:04:27,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:04:27,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:04:27,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27" (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 [2020-09-25 11:04:28,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:04:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:04:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:04:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:04:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-25 11:04:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-25 11:04:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:04:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:04:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:04:28,149 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:04:28,150 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:04:28,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:04:28 BoogieIcfgContainer [2020-09-25 11:04:28,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:04:28,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:04:28,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:04:28,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:04:28,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:04:27" (1/3) ... [2020-09-25 11:04:28,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3a53cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:04:28, skipping insertion in model container [2020-09-25 11:04:28,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:04:27" (2/3) ... [2020-09-25 11:04:28,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3a53cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:04:28, skipping insertion in model container [2020-09-25 11:04:28,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:04:28" (3/3) ... [2020-09-25 11:04:28,164 INFO L109 eAbstractionObserver]: Analyzing ICFG float12.c [2020-09-25 11:04:28,175 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:04:28,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:04:28,204 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:04:28,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:04:28,234 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:04:28,234 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:04:28,235 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:04:28,235 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:04:28,235 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:04:28,235 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:04:28,235 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:04:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-09-25 11:04:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-25 11:04:28,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:04:28,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:04:28,262 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:04:28,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:04:28,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1310297951, now seen corresponding path program 1 times [2020-09-25 11:04:28,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:04:28,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339387362] [2020-09-25 11:04:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:04:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:04:28,376 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:04:28,377 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:04:28,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:04:28,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:04:28 BoogieIcfgContainer [2020-09-25 11:04:28,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:04:28,402 INFO L168 Benchmark]: Toolchain (without parser) took 934.03 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 104.3 MB in the beginning and 162.9 MB in the end (delta: -58.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 11:04:28,403 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 11:04:28,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.80 ms. Allocated memory is still 147.8 MB. Free memory was 103.6 MB in the beginning and 94.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-25 11:04:28,405 INFO L168 Benchmark]: Boogie Preprocessor took 39.86 ms. Allocated memory is still 147.8 MB. Free memory was 94.5 MB in the beginning and 93.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 11:04:28,407 INFO L168 Benchmark]: RCFGBuilder took 324.18 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 93.1 MB in the beginning and 173.4 MB in the end (delta: -80.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:04:28,408 INFO L168 Benchmark]: TraceAbstraction took 243.24 ms. Allocated memory is still 205.0 MB. Free memory was 173.4 MB in the beginning and 162.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-25 11:04:28,412 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.80 ms. Allocated memory is still 147.8 MB. Free memory was 103.6 MB in the beginning and 94.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.86 ms. Allocated memory is still 147.8 MB. Free memory was 94.5 MB in the beginning and 93.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.18 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 93.1 MB in the beginning and 173.4 MB in the end (delta: -80.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243.24 ms. Allocated memory is still 205.0 MB. Free memory was 173.4 MB in the beginning and 162.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryDOUBLEComparisonOperation at line 13. Possible FailurePath: [L6] float f = __VERIFIER_nondet_float(); [L7] double d; [L8] unsigned char x = __VERIFIER_nondet_uchar(); [L10] d=f [L12] COND TRUE f==x [L13] COND TRUE !(d==x) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=18occurred 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, 13 NumberOfCodeBlocks, 13 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...