/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/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:40:59,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:40:59,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:40:59,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-01-06 16:40:59,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:40:59,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:40:59,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:40:59,486 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 16:40:59,519 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:40:59,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:40:59,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:40:59,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:40:59,522 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:40:59,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:40:59,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:40:59,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:40:59,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:40:59,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:40:59,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:40:59,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:40:59,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:40:59,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:40:59,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:40:59,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:40:59,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:40:59,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:40:59,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:40:59,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:40:59,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:40:59,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:40:59,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:40:59,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:40:59,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:40:59,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:40:59,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:40:59,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:41:00,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:41:00,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:41:00,004 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:41:00,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-01-06 16:41:00,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dc3c91e17/9e4299cdbeb44e459551f609832d0fc9/FLAG56926bdf9 [2021-01-06 16:41:00,703 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:41:00,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-01-06 16:41:00,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dc3c91e17/9e4299cdbeb44e459551f609832d0fc9/FLAG56926bdf9 [2021-01-06 16:41:00,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dc3c91e17/9e4299cdbeb44e459551f609832d0fc9 [2021-01-06 16:41:01,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:41:01,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:41:01,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:41:01,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:41:01,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:41:01,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:41:00" (1/1) ... [2021-01-06 16:41:01,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d71980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01, skipping insertion in model container [2021-01-06 16:41:01,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:41:00" (1/1) ... [2021-01-06 16:41:01,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:41:01,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:41:01,243 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/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~str2~0,],[BinaryExpression[ARITHPLUS,IntegerLiteral[1],BinaryExpression[ARITHMINUS,IdentifierExpression[~j~0,],IdentifierExpression[~start~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~start~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~A~0,],[IdentifierExpression[~i~1,]]] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~A~0,],[IntegerLiteral[8]]] [2021-01-06 16:41:01,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:41:01,293 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:41:01,307 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/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#str2~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#str2~0,],offset],BinaryExpression[ARITHPLUS,IntegerLiteral[1],BinaryExpression[ARITHMINUS,IdentifierExpression[~j~0,],IdentifierExpression[~start~0,]]]]]] left hand side expression in assignment: lhs: VariableLHS[~start~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#A~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#A~0,],offset],IdentifierExpression[~i~1,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#A~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~#A~0,],offset]]]] [2021-01-06 16:41:01,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:41:01,353 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:41:01,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01 WrapperNode [2021-01-06 16:41:01,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:41:01,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:41:01,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:41:01,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:41:01,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (1/1) ... [2021-01-06 16:41:01,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (1/1) ... [2021-01-06 16:41:01,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:41:01,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:41:01,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:41:01,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:41:01,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (1/1) ... [2021-01-06 16:41:01,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (1/1) ... [2021-01-06 16:41:01,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (1/1) ... [2021-01-06 16:41:01,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (1/1) ... [2021-01-06 16:41:01,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (1/1) ... [2021-01-06 16:41:01,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (1/1) ... [2021-01-06 16:41:01,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (1/1) ... [2021-01-06 16:41:01,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:41:01,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:41:01,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:41:01,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:41:01,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (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 16:41:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:41:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:41:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:41:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:41:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-01-06 16:41:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:41:01,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:41:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:41:02,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:41:02,276 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-01-06 16:41:02,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:41:02 BoogieIcfgContainer [2021-01-06 16:41:02,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:41:02,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:41:02,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:41:02,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:41:02,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:41:00" (1/3) ... [2021-01-06 16:41:02,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c34042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:41:02, skipping insertion in model container [2021-01-06 16:41:02,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:41:01" (2/3) ... [2021-01-06 16:41:02,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c34042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:41:02, skipping insertion in model container [2021-01-06 16:41:02,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:41:02" (3/3) ... [2021-01-06 16:41:02,287 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2021-01-06 16:41:02,294 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:41:02,299 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:41:02,318 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:41:02,344 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:41:02,344 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:41:02,344 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:41:02,345 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:41:02,345 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:41:02,345 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:41:02,345 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:41:02,345 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:41:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-01-06 16:41:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 16:41:02,369 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:41:02,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:41:02,370 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:41:02,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:41:02,376 INFO L82 PathProgramCache]: Analyzing trace with hash 297203850, now seen corresponding path program 1 times [2021-01-06 16:41:02,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:41:02,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612847549] [2021-01-06 16:41:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:41:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:41:02,589 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 16:41:02,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612847549] [2021-01-06 16:41:02,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:41:02,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:41:02,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816079799] [2021-01-06 16:41:02,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:41:02,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:41:02,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:41:02,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:41:02,616 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2021-01-06 16:41:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:41:02,658 INFO L93 Difference]: Finished difference Result 74 states and 110 transitions. [2021-01-06 16:41:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:41:02,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-06 16:41:02,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:41:02,670 INFO L225 Difference]: With dead ends: 74 [2021-01-06 16:41:02,671 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 16:41:02,674 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 16:41:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 16:41:02,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-01-06 16:41:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-06 16:41:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-01-06 16:41:02,714 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 20 [2021-01-06 16:41:02,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:41:02,715 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-01-06 16:41:02,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:41:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-01-06 16:41:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 16:41:02,716 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:41:02,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:41:02,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:41:02,717 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:41:02,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:41:02,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1628968459, now seen corresponding path program 1 times [2021-01-06 16:41:02,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:41:02,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643309113] [2021-01-06 16:41:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:41:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:41:02,817 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 16:41:02,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643309113] [2021-01-06 16:41:02,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667915296] [2021-01-06 16:41:02,819 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 16:41:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:41:02,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2021-01-06 16:41:02,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:41:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 16:41:02,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 16:41:02,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-01-06 16:41:02,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182895116] [2021-01-06 16:41:02,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:41:02,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:41:02,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:41:02,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:41:02,996 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 3 states. [2021-01-06 16:41:03,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:41:03,022 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2021-01-06 16:41:03,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:41:03,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-01-06 16:41:03,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:41:03,027 INFO L225 Difference]: With dead ends: 62 [2021-01-06 16:41:03,027 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 16:41:03,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:41:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 16:41:03,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-01-06 16:41:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 16:41:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-01-06 16:41:03,041 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 26 [2021-01-06 16:41:03,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:41:03,043 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-01-06 16:41:03,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:41:03,044 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2021-01-06 16:41:03,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 16:41:03,047 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:41:03,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:41:03,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 16:41:03,261 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:41:03,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:41:03,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1644930483, now seen corresponding path program 1 times [2021-01-06 16:41:03,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:41:03,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932871899] [2021-01-06 16:41:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:41:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:41:03,311 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 16:41:03,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932871899] [2021-01-06 16:41:03,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837202667] [2021-01-06 16:41:03,312 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 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 16:41:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:41:03,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 16:41:03,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:41:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-06 16:41:03,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 16:41:03,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-01-06 16:41:03,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794997580] [2021-01-06 16:41:03,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:41:03,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:41:03,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:41:03,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 16:41:03,498 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand 5 states. [2021-01-06 16:41:03,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:41:03,659 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2021-01-06 16:41:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 16:41:03,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-01-06 16:41:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:41:03,660 INFO L225 Difference]: With dead ends: 88 [2021-01-06 16:41:03,661 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 16:41:03,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-06 16:41:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 16:41:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-01-06 16:41:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 16:41:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2021-01-06 16:41:03,668 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 26 [2021-01-06 16:41:03,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:41:03,668 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2021-01-06 16:41:03,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:41:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2021-01-06 16:41:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 16:41:03,669 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:41:03,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:41:03,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:41:03,886 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:41:03,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:41:03,887 INFO L82 PathProgramCache]: Analyzing trace with hash -817771149, now seen corresponding path program 1 times [2021-01-06 16:41:03,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:41:03,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468014647] [2021-01-06 16:41:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:41:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:41:03,956 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 16:41:03,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468014647] [2021-01-06 16:41:03,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555863625] [2021-01-06 16:41:03,958 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:41:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:41:04,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 16:41:04,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 16:41:04,065 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 16:41:04,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 16:41:04,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-01-06 16:41:04,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912916242] [2021-01-06 16:41:04,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 16:41:04,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:41:04,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 16:41:04,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:41:04,069 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand 5 states. [2021-01-06 16:41:04,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:41:04,089 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2021-01-06 16:41:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 16:41:04,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-01-06 16:41:04,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:41:04,090 INFO L225 Difference]: With dead ends: 76 [2021-01-06 16:41:04,090 INFO L226 Difference]: Without dead ends: 42 [2021-01-06 16:41:04,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:41:04,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-06 16:41:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-01-06 16:41:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 16:41:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-01-06 16:41:04,097 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 26 [2021-01-06 16:41:04,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:41:04,097 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-01-06 16:41:04,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 16:41:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2021-01-06 16:41:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-06 16:41:04,099 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:41:04,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:41:04,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 16:41:04,314 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:41:04,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:41:04,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1849885685, now seen corresponding path program 2 times [2021-01-06 16:41:04,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:41:04,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872831531] [2021-01-06 16:41:04,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:41:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:41:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 16:41:04,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872831531] [2021-01-06 16:41:04,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:41:04,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 16:41:04,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163920314] [2021-01-06 16:41:04,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 16:41:04,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:41:04,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 16:41:04,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 16:41:04,447 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 4 states. [2021-01-06 16:41:04,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:41:04,560 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2021-01-06 16:41:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 16:41:04,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2021-01-06 16:41:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:41:04,561 INFO L225 Difference]: With dead ends: 68 [2021-01-06 16:41:04,561 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 16:41:04,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 16:41:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 16:41:04,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 16:41:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 16:41:04,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 16:41:04,564 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-01-06 16:41:04,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:41:04,564 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 16:41:04,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 16:41:04,564 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 16:41:04,564 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 16:41:04,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 16:41:04,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 16:41:04,605 INFO L192 CegarLoopUtils]: At program point L85(lines 58 86) the Hoare annotation is: true [2021-01-06 16:41:04,606 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 16:41:04,606 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 16:41:04,606 INFO L189 CegarLoopUtils]: For program point L70-1(line 70) no Hoare annotation was computed. [2021-01-06 16:41:04,606 INFO L189 CegarLoopUtils]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-01-06 16:41:04,606 INFO L189 CegarLoopUtils]: For program point L70-4(line 70) no Hoare annotation was computed. [2021-01-06 16:41:04,606 INFO L189 CegarLoopUtils]: For program point L70-6(line 70) no Hoare annotation was computed. [2021-01-06 16:41:04,606 INFO L192 CegarLoopUtils]: At program point L95(lines 87 96) the Hoare annotation is: true [2021-01-06 16:41:04,607 INFO L189 CegarLoopUtils]: For program point L62(line 62) no Hoare annotation was computed. [2021-01-06 16:41:04,607 INFO L192 CegarLoopUtils]: At program point L70-8(line 70) the Hoare annotation is: true [2021-01-06 16:41:04,607 INFO L189 CegarLoopUtils]: For program point L70-9(line 70) no Hoare annotation was computed. [2021-01-06 16:41:04,607 INFO L189 CegarLoopUtils]: For program point L71(line 71) no Hoare annotation was computed. [2021-01-06 16:41:04,607 INFO L189 CegarLoopUtils]: For program point L71-2(line 71) no Hoare annotation was computed. [2021-01-06 16:41:04,607 INFO L189 CegarLoopUtils]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2021-01-06 16:41:04,608 INFO L189 CegarLoopUtils]: For program point L63-1(lines 63 84) no Hoare annotation was computed. [2021-01-06 16:41:04,608 INFO L189 CegarLoopUtils]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2021-01-06 16:41:04,608 INFO L185 CegarLoopUtils]: At program point L63-4(lines 63 84) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1))) [2021-01-06 16:41:04,608 INFO L189 CegarLoopUtils]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2021-01-06 16:41:04,608 INFO L189 CegarLoopUtils]: For program point L72(lines 72 81) no Hoare annotation was computed. [2021-01-06 16:41:04,608 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-01-06 16:41:04,608 INFO L185 CegarLoopUtils]: At program point L15-2(lines 14 19) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1))) [2021-01-06 16:41:04,609 INFO L189 CegarLoopUtils]: For program point L73(lines 73 75) no Hoare annotation was computed. [2021-01-06 16:41:04,609 INFO L189 CegarLoopUtils]: For program point L65(lines 65 83) no Hoare annotation was computed. [2021-01-06 16:41:04,609 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 16:41:04,609 INFO L189 CegarLoopUtils]: For program point L90-2(lines 90 92) no Hoare annotation was computed. [2021-01-06 16:41:04,609 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-01-06 16:41:04,609 INFO L192 CegarLoopUtils]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2021-01-06 16:41:04,610 INFO L189 CegarLoopUtils]: For program point L90-4(lines 90 92) no Hoare annotation was computed. [2021-01-06 16:41:04,610 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-01-06 16:41:04,610 INFO L189 CegarLoopUtils]: For program point L66(line 66) no Hoare annotation was computed. [2021-01-06 16:41:04,610 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 16:41:04,610 INFO L185 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1)) [2021-01-06 16:41:04,610 INFO L189 CegarLoopUtils]: For program point L67-1(line 67) no Hoare annotation was computed. [2021-01-06 16:41:04,611 INFO L189 CegarLoopUtils]: For program point L67-3(line 67) no Hoare annotation was computed. [2021-01-06 16:41:04,611 INFO L185 CegarLoopUtils]: At program point L67-5(line 67) the Hoare annotation is: (or (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (< ULTIMATE.start_parse_expression_list_~j~0 (+ ULTIMATE.start_parse_expression_list_~start~0 1))) [2021-01-06 16:41:04,611 INFO L189 CegarLoopUtils]: For program point L67-6(line 67) no Hoare annotation was computed. [2021-01-06 16:41:04,611 INFO L189 CegarLoopUtils]: For program point L68(line 68) no Hoare annotation was computed. [2021-01-06 16:41:04,611 INFO L189 CegarLoopUtils]: For program point L68-2(line 68) no Hoare annotation was computed. [2021-01-06 16:41:04,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:41:04 BoogieIcfgContainer [2021-01-06 16:41:04,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:41:04,631 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:41:04,631 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:41:04,631 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:41:04,632 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:41:02" (3/4) ... [2021-01-06 16:41:04,635 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 16:41:04,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-01-06 16:41:04,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-01-06 16:41:04,650 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:41:04,650 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 16:41:04,729 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i-witness.graphml [2021-01-06 16:41:04,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:41:04,735 INFO L168 Benchmark]: Toolchain (without parser) took 3725.53 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 79.4 MB in the end (delta: 50.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:04,736 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:41:04,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.46 ms. Allocated memory is still 155.2 MB. Free memory was 130.0 MB in the beginning and 118.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:04,738 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.10 ms. Allocated memory is still 155.2 MB. Free memory was 118.1 MB in the beginning and 116.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:04,740 INFO L168 Benchmark]: Boogie Preprocessor took 62.40 ms. Allocated memory is still 155.2 MB. Free memory was 116.3 MB in the beginning and 114.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:04,741 INFO L168 Benchmark]: RCFGBuilder took 772.70 ms. Allocated memory is still 155.2 MB. Free memory was 114.9 MB in the beginning and 126.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:04,744 INFO L168 Benchmark]: TraceAbstraction took 2350.67 ms. Allocated memory is still 155.2 MB. Free memory was 125.9 MB in the beginning and 83.1 MB in the end (delta: 42.8 MB). Peak memory consumption was 44.4 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:04,745 INFO L168 Benchmark]: Witness Printer took 98.93 ms. Allocated memory is still 155.2 MB. Free memory was 83.1 MB in the beginning and 79.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:41:04,750 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 155.2 MB. Free memory is still 127.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 344.46 ms. Allocated memory is still 155.2 MB. Free memory was 130.0 MB in the beginning and 118.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 86.10 ms. Allocated memory is still 155.2 MB. Free memory was 118.1 MB in the beginning and 116.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.40 ms. Allocated memory is still 155.2 MB. Free memory was 116.3 MB in the beginning and 114.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 772.70 ms. Allocated memory is still 155.2 MB. Free memory was 114.9 MB in the beginning and 126.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2350.67 ms. Allocated memory is still 155.2 MB. Free memory was 125.9 MB in the beginning and 83.1 MB in the end (delta: 42.8 MB). Peak memory consumption was 44.4 MB. Max. memory is 8.0 GB. * Witness Printer took 98.93 ms. Allocated memory is still 155.2 MB. Free memory was 83.1 MB in the beginning and 79.4 MB in the end (delta: 3.7 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: 87]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: j < start + 1 - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: !(0 == cond) || j < start + 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(0 == cond) && j < start + 1 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: !(0 == cond) || j < start + 1 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 227 SDtfs, 82 SDslu, 301 SDs, 0 SdLazy, 110 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, 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, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 21 NumberOfFragments, 39 HoareAnnotationTreeSize, 8 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 6067 SizeOfPredicates, 2 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 6/10 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...