/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-benchs/rlim_invariant.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:07:20,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:07:20,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:07:20,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:07:20,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:07:20,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:07:20,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:07:20,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:07:20,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:07:20,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:07:20,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:07:20,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:07:20,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:07:20,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:07:20,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:07:20,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:07:20,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:07:20,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:07:20,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:07:20,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:07:20,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:07:20,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:07:20,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:07:20,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:07:20,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:07:20,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:07:20,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:07:20,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:07:20,175 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:07:20,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:07:20,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:07:20,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:07:20,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:07:20,233 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:07:20,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:07:20,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:07:20,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:07:20,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:07:20,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:07:20,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:07:20,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:07:20,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:07:20,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:07:20,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:07:20,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:07:20,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:07:20,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:07:20,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:07:20,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:07:20,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:07:20,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:07:20,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:07:20,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:07:20,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:07:20,239 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:07:20,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:07:20,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:07:20,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:07:20,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:07:20,690 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:07:20,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_invariant.c [2020-12-23 06:07:20,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ce2a233d1/fa4c3c65226e49998178cfe48d26834c/FLAGdf0d74d8b [2020-12-23 06:07:21,427 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:07:21,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c [2020-12-23 06:07:21,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ce2a233d1/fa4c3c65226e49998178cfe48d26834c/FLAGdf0d74d8b [2020-12-23 06:07:21,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ce2a233d1/fa4c3c65226e49998178cfe48d26834c [2020-12-23 06:07:21,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:07:21,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:07:21,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:07:21,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:07:21,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:07:21,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:07:21" (1/1) ... [2020-12-23 06:07:21,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b20b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:21, skipping insertion in model container [2020-12-23 06:07:21,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:07:21" (1/1) ... [2020-12-23 06:07:21,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:07:21,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:07:21,986 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] left hand side expression in assignment: lhs: VariableLHS[~Y~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~X~0,] left hand side expression in assignment: lhs: VariableLHS[~D~0,] left hand side expression in assignment: lhs: VariableLHS[~S~0,] left hand side expression in assignment: lhs: VariableLHS[~Y~0,] left hand side expression in assignment: lhs: VariableLHS[~R~0,] left hand side expression in assignment: lhs: VariableLHS[~Y~0,] left hand side expression in assignment: lhs: VariableLHS[~Y~0,] [2020-12-23 06:07:22,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:07:22,028 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:07:22,040 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_invariant.c[451,464] left hand side expression in assignment: lhs: VariableLHS[~Y~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~X~0,] left hand side expression in assignment: lhs: VariableLHS[~D~0,] left hand side expression in assignment: lhs: VariableLHS[~S~0,] left hand side expression in assignment: lhs: VariableLHS[~Y~0,] left hand side expression in assignment: lhs: VariableLHS[~R~0,] left hand side expression in assignment: lhs: VariableLHS[~Y~0,] left hand side expression in assignment: lhs: VariableLHS[~Y~0,] [2020-12-23 06:07:22,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:07:22,060 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:07:22,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22 WrapperNode [2020-12-23 06:07:22,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:07:22,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:07:22,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:07:22,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:07:22,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (1/1) ... [2020-12-23 06:07:22,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (1/1) ... [2020-12-23 06:07:22,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:07:22,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:07:22,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:07:22,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:07:22,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (1/1) ... [2020-12-23 06:07:22,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (1/1) ... [2020-12-23 06:07:22,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (1/1) ... [2020-12-23 06:07:22,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (1/1) ... [2020-12-23 06:07:22,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (1/1) ... [2020-12-23 06:07:22,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (1/1) ... [2020-12-23 06:07:22,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (1/1) ... [2020-12-23 06:07:22,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:07:22,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:07:22,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:07:22,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:07:22,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 06:07:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:07:22,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:07:22,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:07:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:07:22,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:07:22,507 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-23 06:07:22,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:22 BoogieIcfgContainer [2020-12-23 06:07:22,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:07:22,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:07:22,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:07:22,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:07:22,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:07:21" (1/3) ... [2020-12-23 06:07:22,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef581ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:07:22, skipping insertion in model container [2020-12-23 06:07:22,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:22" (2/3) ... [2020-12-23 06:07:22,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef581ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:07:22, skipping insertion in model container [2020-12-23 06:07:22,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:22" (3/3) ... [2020-12-23 06:07:22,518 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c [2020-12-23 06:07:22,525 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:07:22,530 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:07:22,552 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:07:22,588 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:07:22,589 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:07:22,589 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:07:22,589 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:07:22,590 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:07:22,590 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:07:22,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:07:22,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:07:22,608 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-23 06:07:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 06:07:22,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:22,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:07:22,617 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:07:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:22,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1473640742, now seen corresponding path program 1 times [2020-12-23 06:07:22,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:22,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722366332] [2020-12-23 06:07:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:07:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:07:22,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722366332] [2020-12-23 06:07:22,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:07:22,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:07:22,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174062369] [2020-12-23 06:07:22,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:07:22,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:07:22,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:07:22,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:07:22,950 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-23 06:07:22,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:07:22,970 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2020-12-23 06:07:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:07:22,971 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 06:07:22,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:07:22,987 INFO L225 Difference]: With dead ends: 34 [2020-12-23 06:07:22,987 INFO L226 Difference]: Without dead ends: 14 [2020-12-23 06:07:22,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:07:23,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-23 06:07:23,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-23 06:07:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-23 06:07:23,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-12-23 06:07:23,038 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2020-12-23 06:07:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:07:23,039 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-12-23 06:07:23,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:07:23,039 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-23 06:07:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 06:07:23,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:23,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:07:23,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:07:23,042 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:07:23,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:23,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2069238230, now seen corresponding path program 1 times [2020-12-23 06:07:23,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:23,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686086195] [2020-12-23 06:07:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:07:23,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:07:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:07:23,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:07:23,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:07:23,227 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:07:23,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:07:23,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:07:23 BoogieIcfgContainer [2020-12-23 06:07:23,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:07:23,268 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:07:23,268 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:07:23,268 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:07:23,269 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:22" (3/4) ... [2020-12-23 06:07:23,272 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:07:23,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:07:23,276 INFO L168 Benchmark]: Toolchain (without parser) took 1477.14 ms. Allocated memory is still 157.3 MB. Free memory was 132.4 MB in the beginning and 118.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:23,277 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 157.3 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:07:23,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.31 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 122.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:23,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.08 ms. Allocated memory is still 157.3 MB. Free memory was 122.3 MB in the beginning and 120.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:23,283 INFO L168 Benchmark]: Boogie Preprocessor took 25.55 ms. Allocated memory is still 157.3 MB. Free memory was 120.8 MB in the beginning and 119.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:23,286 INFO L168 Benchmark]: RCFGBuilder took 382.82 ms. Allocated memory is still 157.3 MB. Free memory was 119.7 MB in the beginning and 140.3 MB in the end (delta: -20.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:23,287 INFO L168 Benchmark]: TraceAbstraction took 756.48 ms. Allocated memory is still 157.3 MB. Free memory was 140.0 MB in the beginning and 118.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:23,289 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 157.3 MB. Free memory was 118.5 MB in the beginning and 118.0 MB in the end (delta: 491.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:07:23,297 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 157.3 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.31 ms. Allocated memory is still 157.3 MB. Free memory was 132.3 MB in the beginning and 122.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.08 ms. Allocated memory is still 157.3 MB. Free memory was 122.3 MB in the beginning and 120.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.55 ms. Allocated memory is still 157.3 MB. Free memory was 120.8 MB in the beginning and 119.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 382.82 ms. Allocated memory is still 157.3 MB. Free memory was 119.7 MB in the beginning and 140.3 MB in the end (delta: -20.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 756.48 ms. Allocated memory is still 157.3 MB. Free memory was 140.0 MB in the beginning and 118.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Witness Printer took 4.17 ms. Allocated memory is still 157.3 MB. Free memory was 118.5 MB in the beginning and 118.0 MB in the end (delta: 491.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 32, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] float X, Y, S, R, D; [L15] int i; [L17] Y = 0 [L19] i = 0 [L19] COND TRUE i < 100000 [L21] X = __VERIFIER_nondet_float() [L22] D = __VERIFIER_nondet_float() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L26] S = Y [L27] Y = X [L28] R = X - S [L29] COND TRUE R <= -D [L29] Y = S - D [L10] COND TRUE !(cond) [L10] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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...