/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/loop-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:50:44,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:50:44,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:50:44,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-01-06 16:50:44,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:50:44,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:50:44,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:50:44,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:50:44,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:50:44,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:50:44,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:50:44,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:50:44,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:50:44,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:50:44,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:50:44,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:50:44,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:50:44,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:50:44,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:50:44,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:50:44,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:50:44,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:50:44,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:50:44,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:50:44,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:50:44,524 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:50:44,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:50:44,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:50:44,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:50:44,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:50:44,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:50:44,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:50:44,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:50:44,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:50:44,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:50:44,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:50:44,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:50:44,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:50:44,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:50:44,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:50:44,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:50:44,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:50:44,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:50:44,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:50:44,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:50:44,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:50:44,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:50:44,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:50:45,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:50:45,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:50:45,021 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:50:45,022 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:50:45,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2021-01-06 16:50:45,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e14803aa9/d4b8db97a7cd4933a93493abc2eb1913/FLAGe70afb92c [2021-01-06 16:50:45,762 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:50:45,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2021-01-06 16:50:45,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e14803aa9/d4b8db97a7cd4933a93493abc2eb1913/FLAGe70afb92c [2021-01-06 16:50:46,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e14803aa9/d4b8db97a7cd4933a93493abc2eb1913 [2021-01-06 16:50:46,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:50:46,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:50:46,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:50:46,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:50:46,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:50:46,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bb1234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46, skipping insertion in model container [2021-01-06 16:50:46,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:50:46,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:50:46,312 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/loop-lit/cggmp2005_variant.i[895,908] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~mid~0,] left hand side expression in assignment: lhs: VariableLHS[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~mid~0,] [2021-01-06 16:50:46,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:50:46,336 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:50:46,351 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/loop-lit/cggmp2005_variant.i[895,908] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~mid~0,] left hand side expression in assignment: lhs: VariableLHS[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~mid~0,] [2021-01-06 16:50:46,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:50:46,373 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:50:46,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46 WrapperNode [2021-01-06 16:50:46,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:50:46,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:50:46,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:50:46,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:50:46,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:50:46,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:50:46,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:50:46,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:50:46,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (1/1) ... [2021-01-06 16:50:46,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:50:46,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:50:46,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:50:46,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:50:46,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (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 [2021-01-06 16:50:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:50:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:50:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:50:46,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:50:46,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:50:46,914 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-06 16:50:46,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:50:46 BoogieIcfgContainer [2021-01-06 16:50:46,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:50:46,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:50:46,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:50:46,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:50:46,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:50:46" (1/3) ... [2021-01-06 16:50:46,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd1170f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:50:46, skipping insertion in model container [2021-01-06 16:50:46,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:50:46" (2/3) ... [2021-01-06 16:50:46,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd1170f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:50:46, skipping insertion in model container [2021-01-06 16:50:46,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:50:46" (3/3) ... [2021-01-06 16:50:46,932 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2021-01-06 16:50:46,940 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:50:46,945 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:50:46,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:50:47,012 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:50:47,013 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:50:47,013 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:50:47,013 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:50:47,013 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:50:47,013 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:50:47,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:50:47,014 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:50:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-01-06 16:50:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 16:50:47,039 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:47,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:47,040 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:47,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089480, now seen corresponding path program 1 times [2021-01-06 16:50:47,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:47,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063020144] [2021-01-06 16:50:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:47,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063020144] [2021-01-06 16:50:47,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:47,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:50:47,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17928743] [2021-01-06 16:50:47,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:50:47,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:47,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:50:47,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:50:47,342 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2021-01-06 16:50:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:47,364 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-01-06 16:50:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:50:47,366 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 16:50:47,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:47,392 INFO L225 Difference]: With dead ends: 20 [2021-01-06 16:50:47,392 INFO L226 Difference]: Without dead ends: 8 [2021-01-06 16:50:47,395 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 [2021-01-06 16:50:47,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-01-06 16:50:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-01-06 16:50:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-01-06 16:50:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-01-06 16:50:47,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-01-06 16:50:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:47,433 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-01-06 16:50:47,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:50:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-01-06 16:50:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 16:50:47,434 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:47,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:47,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:50:47,436 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:47,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970316, now seen corresponding path program 1 times [2021-01-06 16:50:47,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:47,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439317097] [2021-01-06 16:50:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:47,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439317097] [2021-01-06 16:50:47,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:50:47,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:50:47,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484041442] [2021-01-06 16:50:47,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:50:47,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:47,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:50:47,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:50:47,564 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2021-01-06 16:50:47,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:47,583 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-01-06 16:50:47,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:50:47,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-06 16:50:47,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:47,585 INFO L225 Difference]: With dead ends: 13 [2021-01-06 16:50:47,585 INFO L226 Difference]: Without dead ends: 9 [2021-01-06 16:50:47,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:50:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-01-06 16:50:47,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-01-06 16:50:47,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-01-06 16:50:47,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-01-06 16:50:47,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-01-06 16:50:47,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:47,591 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-01-06 16:50:47,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:50:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-01-06 16:50:47,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 16:50:47,592 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:47,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:47,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:50:47,593 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:47,593 INFO L82 PathProgramCache]: Analyzing trace with hash 183170324, now seen corresponding path program 1 times [2021-01-06 16:50:47,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:47,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043344921] [2021-01-06 16:50:47,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:47,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043344921] [2021-01-06 16:50:47,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621911546] [2021-01-06 16:50:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:47,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 16:50:47,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:48,164 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 16:50:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:48,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:48,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-01-06 16:50:48,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497778333] [2021-01-06 16:50:48,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 16:50:48,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:48,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 16:50:48,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-06 16:50:48,218 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 11 states. [2021-01-06 16:50:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:48,367 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-01-06 16:50:48,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:50:48,369 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 8 [2021-01-06 16:50:48,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:48,370 INFO L225 Difference]: With dead ends: 14 [2021-01-06 16:50:48,370 INFO L226 Difference]: Without dead ends: 10 [2021-01-06 16:50:48,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-01-06 16:50:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-01-06 16:50:48,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-01-06 16:50:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-01-06 16:50:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-01-06 16:50:48,383 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-01-06 16:50:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:48,384 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-01-06 16:50:48,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 16:50:48,384 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-01-06 16:50:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 16:50:48,385 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:50:48,385 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:50:48,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 16:50:48,600 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:50:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:50:48,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1384978124, now seen corresponding path program 2 times [2021-01-06 16:50:48,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:50:48,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590293038] [2021-01-06 16:50:48,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:50:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:50:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:48,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590293038] [2021-01-06 16:50:48,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546658551] [2021-01-06 16:50:48,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:48,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 16:50:48,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 16:50:48,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 16:50:48,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:50:49,164 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 16:50:49,174 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 16:50:49,183 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:49,192 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:49,205 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 16:50:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:50:49,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:50:49,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-01-06 16:50:49,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741533619] [2021-01-06 16:50:49,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 16:50:49,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:50:49,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 16:50:49,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-01-06 16:50:49,240 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 12 states. [2021-01-06 16:50:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:50:49,665 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-01-06 16:50:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 16:50:49,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 9 [2021-01-06 16:50:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:50:49,666 INFO L225 Difference]: With dead ends: 13 [2021-01-06 16:50:49,666 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 16:50:49,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-01-06 16:50:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 16:50:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 16:50:49,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 16:50:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 16:50:49,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-01-06 16:50:49,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:50:49,669 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 16:50:49,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 16:50:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 16:50:49,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 16:50:49,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:50:49,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 16:50:49,961 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 16:50:49,961 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-01-06 16:50:49,961 INFO L192 CegarLoopUtils]: At program point L36(lines 24 37) the Hoare annotation is: true [2021-01-06 16:50:49,961 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 16:50:49,961 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 16:50:49,962 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 16:50:49,962 INFO L189 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-01-06 16:50:49,962 INFO L185 CegarLoopUtils]: At program point L30-2(lines 30 34) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~lo~0 (* 2 ULTIMATE.start_main_~mid~0)))) (and (<= .cse0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~lo~0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~hi~0 .cse0))) [2021-01-06 16:50:49,962 INFO L189 CegarLoopUtils]: For program point L30-3(lines 30 34) no Hoare annotation was computed. [2021-01-06 16:50:49,962 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-01-06 16:50:49,962 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-01-06 16:50:49,963 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-01-06 16:50:49,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:50:49 BoogieIcfgContainer [2021-01-06 16:50:49,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:50:49,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:50:49,983 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:50:49,983 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:50:49,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:50:46" (3/4) ... [2021-01-06 16:50:49,989 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 16:50:50,000 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-01-06 16:50:50,001 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 16:50:50,001 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:50:50,001 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:50:50,062 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-lit/cggmp2005_variant.i-witness.graphml [2021-01-06 16:50:50,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:50:50,064 INFO L168 Benchmark]: Toolchain (without parser) took 3937.47 ms. Allocated memory was 159.4 MB in the beginning and 197.1 MB in the end (delta: 37.7 MB). Free memory was 134.6 MB in the beginning and 137.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 35.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:50,065 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 159.4 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:50:50,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.43 ms. Allocated memory is still 159.4 MB. Free memory was 134.4 MB in the beginning and 124.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:50,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 159.4 MB. Free memory was 124.5 MB in the beginning and 123.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:50,067 INFO L168 Benchmark]: Boogie Preprocessor took 22.09 ms. Allocated memory is still 159.4 MB. Free memory was 123.3 MB in the beginning and 122.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:50,069 INFO L168 Benchmark]: RCFGBuilder took 480.90 ms. Allocated memory is still 159.4 MB. Free memory was 122.2 MB in the beginning and 111.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:50,070 INFO L168 Benchmark]: TraceAbstraction took 3062.71 ms. Allocated memory was 159.4 MB in the beginning and 197.1 MB in the end (delta: 37.7 MB). Free memory was 110.7 MB in the beginning and 139.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:50,070 INFO L168 Benchmark]: Witness Printer took 78.96 ms. Allocated memory is still 197.1 MB. Free memory was 139.8 MB in the beginning and 137.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:50:50,074 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 159.4 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.43 ms. Allocated memory is still 159.4 MB. Free memory was 134.4 MB in the beginning and 124.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 159.4 MB. Free memory was 124.5 MB in the beginning and 123.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.09 ms. Allocated memory is still 159.4 MB. Free memory was 123.3 MB in the beginning and 122.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 480.90 ms. Allocated memory is still 159.4 MB. Free memory was 122.2 MB in the beginning and 111.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3062.71 ms. Allocated memory was 159.4 MB in the beginning and 197.1 MB in the end (delta: 37.7 MB). Free memory was 110.7 MB in the beginning and 139.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. * Witness Printer took 78.96 ms. Allocated memory is still 197.1 MB. Free memory was 139.8 MB in the beginning and 137.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (lo + 2 * mid <= hi && lo <= hi) && hi <= lo + 2 * mid - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 21 SDslu, 26 SDs, 0 SdLazy, 67 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 20 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 99 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 2149 SizeOfPredicates, 8 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 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 proved your program to be correct! Received shutdown request...