/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/float2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:29:00,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:29:00,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:29:00,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:29:00,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:29:00,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:29:00,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:29:00,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:29:00,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:29:00,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:29:00,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:29:00,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:29:00,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:29:00,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:29:00,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:29:00,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:29:00,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:29:00,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:29:00,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:29:00,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:29:00,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:29:00,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:29:00,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:29:00,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:29:00,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:29:00,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:29:00,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:29:00,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:29:00,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:29:00,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:29:00,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:29:00,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:29:00,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:29:00,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:29:00,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:29:00,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:29:00,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:29:00,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:29:00,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:29:00,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:29:00,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:29:00,573 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 [2020-10-28 14:29:00,599 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:29:00,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:29:00,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:29:00,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:29:00,601 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:29:00,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:29:00,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:29:00,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:29:00,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:29:00,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:29:00,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:29:00,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:29:00,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:29:00,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:29:00,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:29:00,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:29:00,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:29:00,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:29:00,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:29:00,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:29:00,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:29:00,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:29:00,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:29:00,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:29:00,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:29:00,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:29:00,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:29:00,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:29:00,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:29:00,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:29:00,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:29:01,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:29:01,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:29:01,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:29:01,014 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:29:01,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float2.c [2020-10-28 14:29:01,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac74a8493/f645a5dc55bd4c3492cdf444559f5910/FLAG61e1be97f [2020-10-28 14:29:01,704 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:29:01,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float2.c [2020-10-28 14:29:01,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac74a8493/f645a5dc55bd4c3492cdf444559f5910/FLAG61e1be97f [2020-10-28 14:29:02,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac74a8493/f645a5dc55bd4c3492cdf444559f5910 [2020-10-28 14:29:02,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:29:02,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:29:02,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:02,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:29:02,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:29:02,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:29:02" (1/1) ... [2020-10-28 14:29:02,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42def216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02, skipping insertion in model container [2020-10-28 14:29:02,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:29:02" (1/1) ... [2020-10-28 14:29:02,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:29:02,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:29:02,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:02,349 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:29:02,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:02,382 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:29:02,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02 WrapperNode [2020-10-28 14:29:02,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:02,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:29:02,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:29:02,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:29:02,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02" (1/1) ... [2020-10-28 14:29:02,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02" (1/1) ... [2020-10-28 14:29:02,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02" (1/1) ... [2020-10-28 14:29:02,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02" (1/1) ... [2020-10-28 14:29:02,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02" (1/1) ... [2020-10-28 14:29:02,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02" (1/1) ... [2020-10-28 14:29:02,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02" (1/1) ... [2020-10-28 14:29:02,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:29:02,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:29:02,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:29:02,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:29:02,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02" (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 [2020-10-28 14:29:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:29:02,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:29:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:29:02,505 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:29:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:29:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:29:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:29:02,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:29:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:29:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:29:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:29:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:29:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:29:02,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:29:02,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:29:02,780 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:29:02,781 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 14:29:02,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:02 BoogieIcfgContainer [2020-10-28 14:29:02,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:29:02,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:29:02,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:29:02,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:29:02,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:29:02" (1/3) ... [2020-10-28 14:29:02,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d0eefe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:02, skipping insertion in model container [2020-10-28 14:29:02,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:02" (2/3) ... [2020-10-28 14:29:02,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d0eefe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:02, skipping insertion in model container [2020-10-28 14:29:02,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:02" (3/3) ... [2020-10-28 14:29:02,794 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2020-10-28 14:29:02,810 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:29:02,816 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:29:02,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:29:02,865 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:29:02,865 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:29:02,865 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:29:02,865 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:29:02,866 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:29:02,866 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:29:02,866 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:29:02,866 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:29:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-28 14:29:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-28 14:29:02,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:02,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:02,895 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:02,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:02,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1621522272, now seen corresponding path program 1 times [2020-10-28 14:29:02,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:02,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017037902] [2020-10-28 14:29:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:29:03,073 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:29:03,073 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:29:03,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:29:03,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:29:03 BoogieIcfgContainer [2020-10-28 14:29:03,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:29:03,097 INFO L168 Benchmark]: Toolchain (without parser) took 996.28 ms. Allocated memory is still 154.1 MB. Free memory was 128.8 MB in the beginning and 131.8 MB in the end (delta: -3.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:29:03,098 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 154.1 MB. Free memory was 126.6 MB in the beginning and 126.2 MB in the end (delta: 419.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:29:03,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.65 ms. Allocated memory is still 154.1 MB. Free memory was 128.3 MB in the beginning and 119.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:03,100 INFO L168 Benchmark]: Boogie Preprocessor took 36.04 ms. Allocated memory is still 154.1 MB. Free memory was 119.2 MB in the beginning and 117.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:03,101 INFO L168 Benchmark]: RCFGBuilder took 362.41 ms. Allocated memory is still 154.1 MB. Free memory was 117.8 MB in the beginning and 105.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:03,102 INFO L168 Benchmark]: TraceAbstraction took 307.74 ms. Allocated memory is still 154.1 MB. Free memory was 104.8 MB in the beginning and 131.8 MB in the end (delta: -27.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:29:03,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 154.1 MB. Free memory was 126.6 MB in the beginning and 126.2 MB in the end (delta: 419.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.65 ms. Allocated memory is still 154.1 MB. Free memory was 128.3 MB in the beginning and 119.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.04 ms. Allocated memory is still 154.1 MB. Free memory was 119.2 MB in the beginning and 117.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 362.41 ms. Allocated memory is still 154.1 MB. Free memory was 117.8 MB in the beginning and 105.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 307.74 ms. Allocated memory is still 154.1 MB. Free memory was 104.8 MB in the beginning and 131.8 MB in the end (delta: -27.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L [L12] COND TRUE !(a==1.25) [L12] CALL reach_error() [L3] __assert_fail("0", "float2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 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=29occurred 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, 9 NumberOfCodeBlocks, 9 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...