/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/float5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:09:21,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:09:21,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:09:21,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:09:21,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:09:21,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:09:21,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:09:21,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:09:21,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:09:21,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:09:21,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:09:21,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:09:21,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:09:21,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:09:21,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:09:21,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:09:21,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:09:21,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:09:21,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:09:21,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:09:21,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:09:21,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:09:21,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:09:21,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:09:21,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:09:21,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:09:21,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:09:21,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:09:21,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:09:21,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:09:21,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:09:21,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:09:21,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:09:21,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:09:21,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:09:21,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:09:21,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:09:21,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:09:21,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:09:21,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:09:21,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:09:21,774 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 [2020-10-29 09:09:21,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:09:21,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:09:21,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:09:21,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:09:21,830 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:09:21,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:09:21,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:09:21,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:09:21,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:09:21,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:09:21,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:09:21,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:09:21,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:09:21,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:09:21,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:09:21,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:09:21,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:09:21,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:09:21,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:09:21,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:09:21,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:09:21,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:09:21,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:09:21,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:09:21,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:09:21,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:09:21,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:09:21,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:09:21,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:09:21,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:09:22,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:09:22,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:09:22,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:09:22,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:09:22,314 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:09:22,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float5.c [2020-10-29 09:09:22,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b79a0412a/f81592c081724eeb93049ddb80088b6a/FLAGc90eb46e8 [2020-10-29 09:09:23,007 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:09:23,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float5.c [2020-10-29 09:09:23,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b79a0412a/f81592c081724eeb93049ddb80088b6a/FLAGc90eb46e8 [2020-10-29 09:09:23,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b79a0412a/f81592c081724eeb93049ddb80088b6a [2020-10-29 09:09:23,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:09:23,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:09:23,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:23,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:09:23,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:09:23,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a72b053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23, skipping insertion in model container [2020-10-29 09:09:23,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:09:23,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:09:23,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:23,595 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:09:23,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:23,631 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:09:23,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23 WrapperNode [2020-10-29 09:09:23,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:23,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:09:23,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:09:23,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:09:23,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (1/1) ... [2020-10-29 09:09:23,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:09:23,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:09:23,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:09:23,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:09:23,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (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 [2020-10-29 09:09:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:09:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:09:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:09:23,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:09:23,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:09:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:09:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:09:23,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:09:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:09:23,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:09:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:09:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:09:23,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:09:23,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:09:23,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:09:23,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:09:24,260 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:09:24,261 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 09:09:24,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:24 BoogieIcfgContainer [2020-10-29 09:09:24,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:09:24,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:09:24,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:09:24,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:09:24,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:09:23" (1/3) ... [2020-10-29 09:09:24,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4830000a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:24, skipping insertion in model container [2020-10-29 09:09:24,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:23" (2/3) ... [2020-10-29 09:09:24,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4830000a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:24, skipping insertion in model container [2020-10-29 09:09:24,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:24" (3/3) ... [2020-10-29 09:09:24,275 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2020-10-29 09:09:24,291 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:09:24,296 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:09:24,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:09:24,357 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:09:24,368 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:09:24,368 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:09:24,368 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:09:24,368 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:09:24,369 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:09:24,369 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:09:24,369 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:09:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-29 09:09:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-29 09:09:24,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:24,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:09:24,404 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:24,416 INFO L82 PathProgramCache]: Analyzing trace with hash -278603709, now seen corresponding path program 1 times [2020-10-29 09:09:24,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:24,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44532121] [2020-10-29 09:09:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:24,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:24,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:24,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 09:09:24,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:24,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 09:09:24,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:24,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:09:24,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:09:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:24,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:24,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:24,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 09:09:24,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:24,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:24,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:24,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:09:24,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44532121] [2020-10-29 09:09:24,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:09:24,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 09:09:24,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721169800] [2020-10-29 09:09:24,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 09:09:24,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:24,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 09:09:24,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 09:09:24,900 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-29 09:09:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:24,993 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-10-29 09:09:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:09:24,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-29 09:09:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:25,008 INFO L225 Difference]: With dead ends: 28 [2020-10-29 09:09:25,008 INFO L226 Difference]: Without dead ends: 12 [2020-10-29 09:09:25,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 09:09:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-29 09:09:25,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-29 09:09:25,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-29 09:09:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-10-29 09:09:25,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2020-10-29 09:09:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:25,062 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-10-29 09:09:25,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 09:09:25,063 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-10-29 09:09:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-29 09:09:25,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:25,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:09:25,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:09:25,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:25,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:25,067 INFO L82 PathProgramCache]: Analyzing trace with hash -276756667, now seen corresponding path program 1 times [2020-10-29 09:09:25,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:25,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339557125] [2020-10-29 09:09:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:09:25,125 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:09:25,125 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:09:25,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:09:25,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:09:25 BoogieIcfgContainer [2020-10-29 09:09:25,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:09:25,161 INFO L168 Benchmark]: Toolchain (without parser) took 1786.06 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 117.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:25,162 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 136.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:25,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.75 ms. Allocated memory is still 163.6 MB. Free memory was 138.5 MB in the beginning and 128.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:25,166 INFO L168 Benchmark]: Boogie Preprocessor took 38.29 ms. Allocated memory is still 163.6 MB. Free memory was 128.8 MB in the beginning and 127.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:25,167 INFO L168 Benchmark]: RCFGBuilder took 590.54 ms. Allocated memory is still 163.6 MB. Free memory was 127.6 MB in the beginning and 115.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:25,168 INFO L168 Benchmark]: TraceAbstraction took 890.93 ms. Allocated memory is still 163.6 MB. Free memory was 115.4 MB in the beginning and 117.6 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:25,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 136.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.75 ms. Allocated memory is still 163.6 MB. Free memory was 138.5 MB in the beginning and 128.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.29 ms. Allocated memory is still 163.6 MB. Free memory was 128.8 MB in the beginning and 127.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 590.54 ms. Allocated memory is still 163.6 MB. Free memory was 127.6 MB in the beginning and 115.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 890.93 ms. Allocated memory is still 163.6 MB. Free memory was 115.4 MB in the beginning and 117.6 MB in the end (delta: -2.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L10] COND FALSE !(!(a==1 || a==0.5 || a==2 || a==3 || a==0.1)) [L11] b=a [L12] a/=2 [L13] a*=2 [L14] COND TRUE !(a==b) [L14] CALL reach_error() [L4] __assert_fail("0", "float5.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 7 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...