/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-zilu/benchmark25_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:10:42,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:10:42,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:10:42,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:10:42,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:10:42,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:10:42,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:10:42,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:10:42,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:10:42,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:10:42,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:10:42,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:10:42,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:10:42,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:10:42,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:10:42,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:10:42,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:10:42,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:10:42,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:10:42,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:10:42,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:10:42,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:10:42,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:10:42,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:10:42,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:10:42,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:10:42,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:10:42,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:10:42,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:10:42,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:10:42,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:10:42,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:10:42,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:10:42,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:10:42,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:10:42,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:10:42,520 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 17:10:42,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:10:42,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:10:42,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:10:42,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:10:42,556 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:10:42,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:10:42,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:10:42,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:10:42,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:10:42,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:10:42,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:10:42,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:10:42,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:10:42,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:10:42,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:10:42,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:10:42,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:10:42,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:10:42,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:10:42,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:10:42,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:10:42,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:10:42,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:10:42,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:10:42,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:10:42,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:10:42,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:10:43,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:10:43,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:10:43,014 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:10:43,014 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:10:43,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2021-01-06 17:10:43,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3560f9df8/caafd7d561c3418393c542a89306a8e1/FLAG7bf9173cb [2021-01-06 17:10:43,657 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:10:43,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2021-01-06 17:10:43,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3560f9df8/caafd7d561c3418393c542a89306a8e1/FLAG7bf9173cb [2021-01-06 17:10:44,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3560f9df8/caafd7d561c3418393c542a89306a8e1 [2021-01-06 17:10:44,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:10:44,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:10:44,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:10:44,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:10:44,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:10:44,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e59e1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44, skipping insertion in model container [2021-01-06 17:10:44,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:10:44,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:10:44,227 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-zilu/benchmark25_linear.i[868,881] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:10:44,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:10:44,248 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:10:44,263 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-zilu/benchmark25_linear.i[868,881] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:10:44,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:10:44,282 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:10:44,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44 WrapperNode [2021-01-06 17:10:44,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:10:44,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:10:44,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:10:44,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:10:44,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:10:44,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:10:44,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:10:44,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:10:44,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (1/1) ... [2021-01-06 17:10:44,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:10:44,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:10:44,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:10:44,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:10:44,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (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 17:10:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:10:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:10:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:10:44,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:10:44,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:10:44,710 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-01-06 17:10:44,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:10:44 BoogieIcfgContainer [2021-01-06 17:10:44,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:10:44,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:10:44,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:10:44,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:10:44,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:10:44" (1/3) ... [2021-01-06 17:10:44,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296793c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:10:44, skipping insertion in model container [2021-01-06 17:10:44,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:10:44" (2/3) ... [2021-01-06 17:10:44,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296793c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:10:44, skipping insertion in model container [2021-01-06 17:10:44,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:10:44" (3/3) ... [2021-01-06 17:10:44,730 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark25_linear.i [2021-01-06 17:10:44,737 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:10:44,743 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 17:10:44,763 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 17:10:44,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:10:44,806 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:10:44,806 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:10:44,806 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:10:44,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:10:44,806 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:10:44,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:10:44,807 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:10:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-01-06 17:10:44,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:10:44,835 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:10:44,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:10:44,837 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:10:44,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:10:44,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-01-06 17:10:44,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:10:44,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842713691] [2021-01-06 17:10:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:10:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:10:45,103 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 17:10:45,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842713691] [2021-01-06 17:10:45,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:10:45,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:10:45,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985007942] [2021-01-06 17:10:45,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:10:45,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:10:45,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:10:45,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:10:45,138 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2021-01-06 17:10:45,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:10:45,164 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-01-06 17:10:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:10:45,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:10:45,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:10:45,189 INFO L225 Difference]: With dead ends: 20 [2021-01-06 17:10:45,190 INFO L226 Difference]: Without dead ends: 8 [2021-01-06 17:10:45,193 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 17:10:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-01-06 17:10:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-01-06 17:10:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-01-06 17:10:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-01-06 17:10:45,228 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-01-06 17:10:45,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:10:45,228 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-01-06 17:10:45,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:10:45,229 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-01-06 17:10:45,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:10:45,229 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:10:45,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:10:45,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:10:45,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:10:45,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:10:45,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-01-06 17:10:45,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:10:45,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89794792] [2021-01-06 17:10:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:10:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:10:45,334 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 17:10:45,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89794792] [2021-01-06 17:10:45,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:10:45,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:10:45,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985030902] [2021-01-06 17:10:45,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 17:10:45,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:10:45,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 17:10:45,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 17:10:45,339 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2021-01-06 17:10:45,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:10:45,353 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-01-06 17:10:45,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 17:10:45,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-01-06 17:10:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:10:45,354 INFO L225 Difference]: With dead ends: 13 [2021-01-06 17:10:45,354 INFO L226 Difference]: Without dead ends: 9 [2021-01-06 17:10:45,356 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 17:10:45,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-01-06 17:10:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-01-06 17:10:45,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-01-06 17:10:45,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-01-06 17:10:45,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-01-06 17:10:45,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:10:45,359 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-01-06 17:10:45,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 17:10:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-01-06 17:10:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:10:45,360 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:10:45,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:10:45,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:10:45,361 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:10:45,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:10:45,361 INFO L82 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2021-01-06 17:10:45,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:10:45,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444571073] [2021-01-06 17:10:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:10:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:10:45,408 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 17:10:45,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444571073] [2021-01-06 17:10:45,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710327531] [2021-01-06 17:10:45,409 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 17:10:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:10:45,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:10:45,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:10:45,591 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 17:10:45,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:10:45,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-01-06 17:10:45,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586822975] [2021-01-06 17:10:45,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:10:45,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:10:45,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:10:45,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:10:45,595 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2021-01-06 17:10:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:10:45,616 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-01-06 17:10:45,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:10:45,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-01-06 17:10:45,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:10:45,617 INFO L225 Difference]: With dead ends: 14 [2021-01-06 17:10:45,617 INFO L226 Difference]: Without dead ends: 10 [2021-01-06 17:10:45,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:10:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-01-06 17:10:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-01-06 17:10:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-01-06 17:10:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-01-06 17:10:45,621 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-01-06 17:10:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:10:45,622 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-01-06 17:10:45,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:10:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-01-06 17:10:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:10:45,622 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:10:45,623 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:10:45,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 17:10:45,838 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:10:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:10:45,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1384978123, now seen corresponding path program 2 times [2021-01-06 17:10:45,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:10:45,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122189565] [2021-01-06 17:10:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:10:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:10:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 17:10:45,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122189565] [2021-01-06 17:10:45,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:10:45,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:10:45,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164313194] [2021-01-06 17:10:45,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:10:45,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:10:45,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:10:45,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:10:45,905 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2021-01-06 17:10:45,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:10:45,929 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-01-06 17:10:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:10:45,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-01-06 17:10:45,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:10:45,930 INFO L225 Difference]: With dead ends: 10 [2021-01-06 17:10:45,930 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:10:45,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:10:45,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:10:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:10:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:10:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:10:45,932 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-01-06 17:10:45,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:10:45,932 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:10:45,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:10:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:10:45,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:10:45,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 17:10:45,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:10:45,951 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:10:45,951 INFO L189 CegarLoopUtils]: For program point L21(line 21) no Hoare annotation was computed. [2021-01-06 17:10:45,952 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-01-06 17:10:45,952 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:10:45,952 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:10:45,952 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:10:45,952 INFO L192 CegarLoopUtils]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-01-06 17:10:45,953 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-01-06 17:10:45,953 INFO L185 CegarLoopUtils]: At program point L22-2(lines 22 24) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 10) [2021-01-06 17:10:45,953 INFO L189 CegarLoopUtils]: For program point L22-3(lines 22 24) no Hoare annotation was computed. [2021-01-06 17:10:45,953 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-01-06 17:10:45,953 INFO L189 CegarLoopUtils]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-01-06 17:10:45,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:10:45 BoogieIcfgContainer [2021-01-06 17:10:45,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:10:45,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:10:45,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:10:45,972 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:10:45,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:10:44" (3/4) ... [2021-01-06 17:10:45,976 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:10:45,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-01-06 17:10:45,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:10:45,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:10:45,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:10:46,024 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-zilu/benchmark25_linear.i-witness.graphml [2021-01-06 17:10:46,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:10:46,027 INFO L168 Benchmark]: Toolchain (without parser) took 1985.95 ms. Allocated memory is still 152.0 MB. Free memory was 126.8 MB in the beginning and 94.0 MB in the end (delta: 32.8 MB). Peak memory consumption was 33.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:46,027 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:10:46,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.60 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 117.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:46,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.96 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:46,036 INFO L168 Benchmark]: Boogie Preprocessor took 20.28 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 115.0 MB in the end (delta: 831.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:10:46,037 INFO L168 Benchmark]: RCFGBuilder took 377.25 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 103.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:46,037 INFO L168 Benchmark]: TraceAbstraction took 1251.61 ms. Allocated memory is still 152.0 MB. Free memory was 103.2 MB in the beginning and 96.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:46,038 INFO L168 Benchmark]: Witness Printer took 52.18 ms. Allocated memory is still 152.0 MB. Free memory was 96.6 MB in the beginning and 94.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:10:46,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 239.60 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 117.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.96 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 20.28 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 115.0 MB in the end (delta: 831.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 377.25 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 103.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1251.61 ms. Allocated memory is still 152.0 MB. Free memory was 103.2 MB in the beginning and 96.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. * Witness Printer took 52.18 ms. Allocated memory is still 152.0 MB. Free memory was 96.6 MB in the beginning and 94.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x <= 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 3 SDslu, 13 SDs, 0 SdLazy, 22 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 17 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 430 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/5 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...