/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 enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:49:49,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:49:49,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:49:49,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:49:49,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:49:49,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:49:49,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:49:49,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:49:49,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:49:49,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:49:49,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:49:49,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:49:49,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:49:50,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:49:50,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:49:50,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:49:50,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:49:50,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:49:50,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:49:50,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:49:50,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:49:50,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:49:50,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:49:50,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:49:50,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:49:50,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:49:50,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:49:50,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:49:50,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:49:50,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:49:50,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:49:50,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:49:50,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:49:50,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:49:50,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:49:50,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:49:50,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:49:50,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:49:50,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:49:50,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:49:50,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:49:50,023 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 [2020-08-18 17:49:50,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:49:50,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:49:50,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:49:50,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:49:50,046 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:49:50,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:49:50,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:49:50,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:49:50,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:49:50,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:49:50,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:49:50,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:49:50,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:49:50,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:49:50,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:49:50,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:49:50,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:49:50,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:49:50,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:49:50,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:49:50,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:49:50,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:49:50,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:49:50,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:49:50,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:49:50,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:49:50,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:49:50,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:49:50,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:49:50,051 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 -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:49:50,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:49:50,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:49:50,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:49:50,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:49:50,343 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:49:50,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-08-18 17:49:50,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24d612497/cbcac8e8ae44471cabeae1ab3b41d1f7/FLAG5edee2b34 [2020-08-18 17:49:50,798 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:49:50,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-08-18 17:49:50,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24d612497/cbcac8e8ae44471cabeae1ab3b41d1f7/FLAG5edee2b34 [2020-08-18 17:49:51,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24d612497/cbcac8e8ae44471cabeae1ab3b41d1f7 [2020-08-18 17:49:51,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:49:51,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:49:51,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:49:51,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:49:51,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:49:51,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:49:51" (1/1) ... [2020-08-18 17:49:51,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559d5a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51, skipping insertion in model container [2020-08-18 17:49:51,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:49:51" (1/1) ... [2020-08-18 17:49:51,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:49:51,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:49:51,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:49:51,409 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:49:51,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:49:51,441 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:49:51,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51 WrapperNode [2020-08-18 17:49:51,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:49:51,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:49:51,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:49:51,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:49:51,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51" (1/1) ... [2020-08-18 17:49:51,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51" (1/1) ... [2020-08-18 17:49:51,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51" (1/1) ... [2020-08-18 17:49:51,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51" (1/1) ... [2020-08-18 17:49:51,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51" (1/1) ... [2020-08-18 17:49:51,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51" (1/1) ... [2020-08-18 17:49:51,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51" (1/1) ... [2020-08-18 17:49:51,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:49:51,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:49:51,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:49:51,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:49:51,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51" (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 [2020-08-18 17:49:51,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:49:51,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:49:51,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:49:51,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:49:51,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:49:51,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:49:51,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:49:51,800 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:49:51,800 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 17:49:51,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:49:51 BoogieIcfgContainer [2020-08-18 17:49:51,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:49:51,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:49:51,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:49:51,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:49:51,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:49:51" (1/3) ... [2020-08-18 17:49:51,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ee88c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:49:51, skipping insertion in model container [2020-08-18 17:49:51,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:49:51" (2/3) ... [2020-08-18 17:49:51,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ee88c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:49:51, skipping insertion in model container [2020-08-18 17:49:51,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:49:51" (3/3) ... [2020-08-18 17:49:51,817 INFO L109 eAbstractionObserver]: Analyzing ICFG float1.c [2020-08-18 17:49:51,828 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:49:51,835 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-08-18 17:49:51,850 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-08-18 17:49:51,874 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:49:51,874 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:49:51,874 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:49:51,875 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:49:51,875 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:49:51,875 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:49:51,875 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:49:51,875 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:49:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-08-18 17:49:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-08-18 17:49:51,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:49:51,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:49:51,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:49:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:49:51,908 INFO L82 PathProgramCache]: Analyzing trace with hash 703471866, now seen corresponding path program 1 times [2020-08-18 17:49:51,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:49:51,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016584588] [2020-08-18 17:49:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:49:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:49:51,989 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:49:51,990 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:49:51,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:49:52,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:49:52 BoogieIcfgContainer [2020-08-18 17:49:52,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:49:52,012 INFO L168 Benchmark]: Toolchain (without parser) took 811.64 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 103.3 MB in the beginning and 163.5 MB in the end (delta: -60.2 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-08-18 17:49:52,013 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 143.7 MB. Free memory was 121.8 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-18 17:49:52,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.50 ms. Allocated memory is still 143.7 MB. Free memory was 102.8 MB in the beginning and 93.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:49:52,015 INFO L168 Benchmark]: Boogie Preprocessor took 30.65 ms. Allocated memory is still 143.7 MB. Free memory was 93.7 MB in the beginning and 92.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:49:52,017 INFO L168 Benchmark]: RCFGBuilder took 334.22 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 92.3 MB in the beginning and 174.7 MB in the end (delta: -82.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-18 17:49:52,018 INFO L168 Benchmark]: TraceAbstraction took 199.31 ms. Allocated memory is still 205.5 MB. Free memory was 174.7 MB in the beginning and 163.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:49:52,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 143.7 MB. Free memory was 121.8 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.50 ms. Allocated memory is still 143.7 MB. Free memory was 102.8 MB in the beginning and 93.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.65 ms. Allocated memory is still 143.7 MB. Free memory was 93.7 MB in the beginning and 92.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.22 ms. Allocated memory was 143.7 MB in the beginning and 205.5 MB in the end (delta: 61.9 MB). Free memory was 92.3 MB in the beginning and 174.7 MB in the end (delta: -82.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199.31 ms. Allocated memory is still 205.5 MB. Free memory was 174.7 MB in the beginning and 163.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 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...