/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:04:33,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:33,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:33,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:33,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:33,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:33,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:33,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:33,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:33,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:33,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:33,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:33,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:33,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:33,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:33,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:33,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:33,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:33,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:33,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:33,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:33,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:33,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:33,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:33,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:33,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:33,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:33,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:33,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:33,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 01:04:33,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:33,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:33,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:33,476 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 [2020-10-27 01:04:33,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:33,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:33,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:33,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:33,536 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:33,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:33,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:33,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:33,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:33,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:33,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:33,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:33,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:33,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:33,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:33,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:33,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:33,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:33,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:33,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:33,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:33,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:33,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:33,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:33,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:33,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:33,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:33,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:33,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:33,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:33,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:34,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:34,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:34,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:34,035 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:34,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i [2020-10-27 01:04:34,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1092059a6/973459bf904e431c9fbc3a2ad24d6cab/FLAGd59feb998 [2020-10-27 01:04:34,755 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:34,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float-zero-sum1.i [2020-10-27 01:04:34,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1092059a6/973459bf904e431c9fbc3a2ad24d6cab/FLAGd59feb998 [2020-10-27 01:04:35,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1092059a6/973459bf904e431c9fbc3a2ad24d6cab [2020-10-27 01:04:35,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:35,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:35,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:35,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:35,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:35,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:35" (1/1) ... [2020-10-27 01:04:35,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7bc089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35, skipping insertion in model container [2020-10-27 01:04:35,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:35" (1/1) ... [2020-10-27 01:04:35,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:35,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:35,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:35,399 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:35,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:35,460 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:35,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35 WrapperNode [2020-10-27 01:04:35,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:35,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:35,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:35,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:35,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35" (1/1) ... [2020-10-27 01:04:35,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35" (1/1) ... [2020-10-27 01:04:35,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35" (1/1) ... [2020-10-27 01:04:35,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35" (1/1) ... [2020-10-27 01:04:35,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35" (1/1) ... [2020-10-27 01:04:35,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35" (1/1) ... [2020-10-27 01:04:35,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35" (1/1) ... [2020-10-27 01:04:35,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:35,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:35,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:35,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:35,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35" (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 [2020-10-27 01:04:35,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:35,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:35,627 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:35,627 INFO L138 BoogieDeclarations]: Found implementation of procedure f00 [2020-10-27 01:04:35,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:04:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:04:35,630 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure f00 [2020-10-27 01:04:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:04:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:35,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:04:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:35,955 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:35,955 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:04:35,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:35 BoogieIcfgContainer [2020-10-27 01:04:35,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:35,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:35,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:35,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:35,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:35" (1/3) ... [2020-10-27 01:04:35,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd35422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:35, skipping insertion in model container [2020-10-27 01:04:35,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:35" (2/3) ... [2020-10-27 01:04:35,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd35422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:35, skipping insertion in model container [2020-10-27 01:04:35,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:35" (3/3) ... [2020-10-27 01:04:35,968 INFO L111 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-10-27 01:04:35,983 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:35,988 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:36,004 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:36,032 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:36,032 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:36,033 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:36,033 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:36,033 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:36,033 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:36,033 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:36,033 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-27 01:04:36,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-27 01:04:36,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:36,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:36,056 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:36,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:36,063 INFO L82 PathProgramCache]: Analyzing trace with hash 463227645, now seen corresponding path program 1 times [2020-10-27 01:04:36,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:36,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366895307] [2020-10-27 01:04:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:36,330 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:36,331 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:36,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:36,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:36 BoogieIcfgContainer [2020-10-27 01:04:36,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:36,360 INFO L168 Benchmark]: Toolchain (without parser) took 1232.47 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 123.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:36,364 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 125.8 MB. Free memory was 97.8 MB in the beginning and 97.7 MB in the end (delta: 120.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:36,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.81 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 116.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:36,367 INFO L168 Benchmark]: Boogie Preprocessor took 65.94 ms. Allocated memory is still 152.0 MB. Free memory was 116.8 MB in the beginning and 115.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:36,368 INFO L168 Benchmark]: RCFGBuilder took 427.92 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 135.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:36,369 INFO L168 Benchmark]: TraceAbstraction took 395.66 ms. Allocated memory is still 152.0 MB. Free memory was 135.0 MB in the beginning and 123.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:36,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 125.8 MB. Free memory was 97.8 MB in the beginning and 97.7 MB in the end (delta: 120.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 325.81 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 116.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.94 ms. Allocated memory is still 152.0 MB. Free memory was 116.8 MB in the beginning and 115.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 427.92 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 135.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 395.66 ms. Allocated memory is still 152.0 MB. Free memory was 135.0 MB in the beginning and 123.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 122, overapproximation of someBinaryArithmeticFLOAToperation at line 111. Possible FailurePath: [L122] CALL f00(-0x1.6b890ep+29, 0x1.6b890ep+29) [L111] float sum = a + b; [L112] union mix m; [L113] m.f = sum [L114] EXPR m.i [L114] COND TRUE !(m.i != 0x80000000) [L114] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "float-zero-sum1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 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...