/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 22:56:23,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 22:56:23,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 22:56:23,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 22:56:23,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 22:56:23,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 22:56:23,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 22:56:23,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 22:56:23,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 22:56:23,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 22:56:23,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 22:56:23,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 22:56:23,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 22:56:23,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 22:56:23,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 22:56:23,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 22:56:23,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 22:56:23,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 22:56:23,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 22:56:23,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 22:56:23,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 22:56:23,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 22:56:23,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 22:56:23,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 22:56:23,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 22:56:23,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 22:56:23,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 22:56:23,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 22:56:23,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 22:56:23,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 22:56:23,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 22:56:23,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 22:56:23,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 22:56:23,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 22:56:23,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 22:56:23,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 22:56:23,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 22:56:23,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 22:56:23,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 22:56:23,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 22:56:23,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 22:56:23,726 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 [2020-08-27 22:56:23,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 22:56:23,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 22:56:23,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 22:56:23,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 22:56:23,754 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 22:56:23,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 22:56:23,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 22:56:23,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 22:56:23,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 22:56:23,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 22:56:23,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 22:56:23,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 22:56:23,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 22:56:23,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 22:56:23,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 22:56:23,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 22:56:23,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 22:56:23,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 22:56:23,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 22:56:23,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 22:56:23,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 22:56:23,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 22:56:23,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 22:56:23,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 22:56:23,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 22:56:23,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 22:56:23,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 22:56:23,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 22:56:23,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 22:56:23,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-27 22:56:24,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 22:56:24,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 22:56:24,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 22:56:24,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 22:56:24,286 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 22:56:24,288 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-08-27 22:56:24,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0b84b2a5/4acc6635865844eb9615fcda4bea446c/FLAGd255bae43 [2020-08-27 22:56:24,911 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 22:56:24,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-08-27 22:56:24,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0b84b2a5/4acc6635865844eb9615fcda4bea446c/FLAGd255bae43 [2020-08-27 22:56:25,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0b84b2a5/4acc6635865844eb9615fcda4bea446c [2020-08-27 22:56:25,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 22:56:25,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 22:56:25,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 22:56:25,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 22:56:25,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 22:56:25,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:56:25" (1/1) ... [2020-08-27 22:56:25,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c545f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25, skipping insertion in model container [2020-08-27 22:56:25,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:56:25" (1/1) ... [2020-08-27 22:56:25,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 22:56:25,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 22:56:25,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:56:25,569 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 22:56:25,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:56:25,607 INFO L208 MainTranslator]: Completed translation [2020-08-27 22:56:25,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25 WrapperNode [2020-08-27 22:56:25,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 22:56:25,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 22:56:25,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 22:56:25,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 22:56:25,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25" (1/1) ... [2020-08-27 22:56:25,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25" (1/1) ... [2020-08-27 22:56:25,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25" (1/1) ... [2020-08-27 22:56:25,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25" (1/1) ... [2020-08-27 22:56:25,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25" (1/1) ... [2020-08-27 22:56:25,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25" (1/1) ... [2020-08-27 22:56:25,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25" (1/1) ... [2020-08-27 22:56:25,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 22:56:25,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 22:56:25,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 22:56:25,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 22:56:25,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25" (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 [2020-08-27 22:56:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 22:56:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 22:56:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 22:56:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 22:56:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 22:56:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 22:56:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 22:56:25,956 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 22:56:25,956 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-27 22:56:25,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:25 BoogieIcfgContainer [2020-08-27 22:56:25,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 22:56:25,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 22:56:25,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 22:56:25,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 22:56:25,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:56:25" (1/3) ... [2020-08-27 22:56:25,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364a1d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:56:25, skipping insertion in model container [2020-08-27 22:56:25,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:56:25" (2/3) ... [2020-08-27 22:56:25,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364a1d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:56:25, skipping insertion in model container [2020-08-27 22:56:25,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:56:25" (3/3) ... [2020-08-27 22:56:25,971 INFO L109 eAbstractionObserver]: Analyzing ICFG float1.c [2020-08-27 22:56:25,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 22:56:25,994 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-08-27 22:56:26,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-08-27 22:56:26,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 22:56:26,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 22:56:26,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 22:56:26,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 22:56:26,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 22:56:26,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 22:56:26,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 22:56:26,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 22:56:26,068 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-08-27 22:56:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-08-27 22:56:26,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:56:26,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:56:26,077 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:56:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:56:26,084 INFO L82 PathProgramCache]: Analyzing trace with hash 703471866, now seen corresponding path program 1 times [2020-08-27 22:56:26,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:56:26,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025263391] [2020-08-27 22:56:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:56:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 22:56:26,191 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 22:56:26,192 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 22:56:26,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 22:56:26,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:56:26 BoogieIcfgContainer [2020-08-27 22:56:26,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 22:56:26,216 INFO L168 Benchmark]: Toolchain (without parser) took 930.98 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 104.6 MB in the beginning and 162.3 MB in the end (delta: -57.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2020-08-27 22:56:26,217 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 22:56:26,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.01 ms. Allocated memory is still 141.0 MB. Free memory was 104.4 MB in the beginning and 95.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-27 22:56:26,220 INFO L168 Benchmark]: Boogie Preprocessor took 35.50 ms. Allocated memory is still 141.0 MB. Free memory was 95.1 MB in the beginning and 93.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-27 22:56:26,221 INFO L168 Benchmark]: RCFGBuilder took 316.24 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.7 MB in the beginning and 173.3 MB in the end (delta: -79.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-27 22:56:26,222 INFO L168 Benchmark]: TraceAbstraction took 249.85 ms. Allocated memory is still 203.9 MB. Free memory was 172.7 MB in the beginning and 162.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-27 22:56:26,226 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.01 ms. Allocated memory is still 141.0 MB. Free memory was 104.4 MB in the beginning and 95.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.50 ms. Allocated memory is still 141.0 MB. Free memory was 95.1 MB in the beginning and 93.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.24 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.7 MB in the beginning and 173.3 MB in the end (delta: -79.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249.85 ms. Allocated memory is still 203.9 MB. Free memory was 172.7 MB in the beginning and 162.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 8, overapproximation of someBinaryArithmeticDOUBLEoperation at line 7, overapproximation of to_real at line 6. Possible FailurePath: [L3] double x; [L4] int y; [L6] x=2 [L7] x-=0.6 [L8] y=x [L10] COND TRUE !(y==1) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 7 NumberOfCodeBlocks, 7 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...