java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/mbpr5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:59:16,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:59:16,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:59:16,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:59:16,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:59:16,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:59:16,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:59:16,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:59:16,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:59:16,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:59:16,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:59:16,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:59:16,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:59:16,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:59:16,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:59:16,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:59:16,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:59:16,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:59:16,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:59:16,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:59:16,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:59:16,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:59:16,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:59:16,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:59:16,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:59:16,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:59:16,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:59:16,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:59:16,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 12:59:17,009 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:59:17,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:59:17,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:59:17,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:59:17,013 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:59:17,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:59:17,013 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:59:17,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:59:17,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:59:17,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:59:17,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:59:17,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:59:17,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:59:17,016 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:59:17,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:59:17,016 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:59:17,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:59:17,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:59:17,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:59:17,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:59:17,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:59:17,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:59:17,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:59:17,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:59:17,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:59:17,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:59:17,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:59:17,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:59:17,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:59:17,056 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:59:17,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:59:17,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:59:17,074 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:59:17,074 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:59:17,075 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr5.c [2019-09-20 12:59:17,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae2c36e63/e1ab2933a5334b908e24e64822d18603/FLAG2d85604bb [2019-09-20 12:59:17,650 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:59:17,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr5.c [2019-09-20 12:59:17,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae2c36e63/e1ab2933a5334b908e24e64822d18603/FLAG2d85604bb [2019-09-20 12:59:17,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae2c36e63/e1ab2933a5334b908e24e64822d18603 [2019-09-20 12:59:18,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:59:18,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:59:18,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:59:18,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:59:18,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:59:18,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:59:17" (1/1) ... [2019-09-20 12:59:18,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f8712e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18, skipping insertion in model container [2019-09-20 12:59:18,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:59:17" (1/1) ... [2019-09-20 12:59:18,028 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:59:18,051 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:59:18,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:59:18,274 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:59:18,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:59:18,459 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:59:18,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18 WrapperNode [2019-09-20 12:59:18,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:59:18,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:59:18,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:59:18,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:59:18,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18" (1/1) ... [2019-09-20 12:59:18,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18" (1/1) ... [2019-09-20 12:59:18,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18" (1/1) ... [2019-09-20 12:59:18,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18" (1/1) ... [2019-09-20 12:59:18,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18" (1/1) ... [2019-09-20 12:59:18,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18" (1/1) ... [2019-09-20 12:59:18,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18" (1/1) ... [2019-09-20 12:59:18,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:59:18,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:59:18,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:59:18,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:59:18,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-20 12:59:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:59:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:59:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:59:18,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:59:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:59:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 12:59:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:59:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:59:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:59:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 12:59:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 12:59:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 12:59:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 12:59:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:59:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:59:19,060 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:59:19,060 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-20 12:59:19,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:59:19 BoogieIcfgContainer [2019-09-20 12:59:19,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:59:19,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:59:19,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:59:19,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:59:19,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:59:17" (1/3) ... [2019-09-20 12:59:19,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dce13c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:59:19, skipping insertion in model container [2019-09-20 12:59:19,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:59:18" (2/3) ... [2019-09-20 12:59:19,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dce13c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:59:19, skipping insertion in model container [2019-09-20 12:59:19,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:59:19" (3/3) ... [2019-09-20 12:59:19,068 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr5.c [2019-09-20 12:59:19,077 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:59:19,086 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:59:19,102 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:59:19,128 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:59:19,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:59:19,129 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:59:19,129 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:59:19,129 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:59:19,129 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:59:19,130 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:59:19,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:59:19,130 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:59:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-09-20 12:59:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 12:59:19,155 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:19,156 INFO L407 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] [2019-09-20 12:59:19,158 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:19,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1208064678, now seen corresponding path program 1 times [2019-09-20 12:59:19,164 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:19,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:19,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:19,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:19,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:19,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:19,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 12:59:19,341 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 12:59:19,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 12:59:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:59:19,358 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2019-09-20 12:59:19,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:19,386 INFO L93 Difference]: Finished difference Result 88 states and 124 transitions. [2019-09-20 12:59:19,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 12:59:19,388 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-09-20 12:59:19,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:19,397 INFO L225 Difference]: With dead ends: 88 [2019-09-20 12:59:19,397 INFO L226 Difference]: Without dead ends: 44 [2019-09-20 12:59:19,401 INFO L636 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 [2019-09-20 12:59:19,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-20 12:59:19,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-09-20 12:59:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-20 12:59:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2019-09-20 12:59:19,445 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 24 [2019-09-20 12:59:19,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:19,446 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2019-09-20 12:59:19,446 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 12:59:19,446 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2019-09-20 12:59:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 12:59:19,448 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:19,448 INFO L407 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] [2019-09-20 12:59:19,448 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:19,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:19,449 INFO L82 PathProgramCache]: Analyzing trace with hash 625586285, now seen corresponding path program 1 times [2019-09-20 12:59:19,449 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:19,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:19,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:19,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:19,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:19,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:19,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 12:59:19,627 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 12:59:19,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 12:59:19,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 12:59:19,629 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 5 states. [2019-09-20 12:59:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:19,700 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2019-09-20 12:59:19,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 12:59:19,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-09-20 12:59:19,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:19,702 INFO L225 Difference]: With dead ends: 52 [2019-09-20 12:59:19,702 INFO L226 Difference]: Without dead ends: 50 [2019-09-20 12:59:19,704 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 12:59:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-09-20 12:59:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2019-09-20 12:59:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-09-20 12:59:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2019-09-20 12:59:19,714 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 24 [2019-09-20 12:59:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:19,715 INFO L475 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2019-09-20 12:59:19,715 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 12:59:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2019-09-20 12:59:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 12:59:19,716 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:19,717 INFO L407 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] [2019-09-20 12:59:19,717 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:19,717 INFO L82 PathProgramCache]: Analyzing trace with hash 627433327, now seen corresponding path program 1 times [2019-09-20 12:59:19,717 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:19,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:19,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:19,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:19,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:19,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:19,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 12:59:19,979 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 12:59:19,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 12:59:19,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 12:59:19,981 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 4 states. [2019-09-20 12:59:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:20,142 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2019-09-20 12:59:20,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 12:59:20,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-09-20 12:59:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:20,146 INFO L225 Difference]: With dead ends: 90 [2019-09-20 12:59:20,147 INFO L226 Difference]: Without dead ends: 53 [2019-09-20 12:59:20,148 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 12:59:20,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-09-20 12:59:20,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2019-09-20 12:59:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-09-20 12:59:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2019-09-20 12:59:20,159 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 24 [2019-09-20 12:59:20,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:20,160 INFO L475 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2019-09-20 12:59:20,160 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 12:59:20,160 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2019-09-20 12:59:20,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-20 12:59:20,161 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:20,162 INFO L407 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, 1, 1] [2019-09-20 12:59:20,162 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:20,163 INFO L82 PathProgramCache]: Analyzing trace with hash 506953876, now seen corresponding path program 1 times [2019-09-20 12:59:20,163 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:20,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:20,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:20,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:20,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:20,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:59:20,393 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-20 12:59:20,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:59:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:20,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-20 12:59:20,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:59:20,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:59:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 12:59:20,573 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 12:59:20,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2019-09-20 12:59:20,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 12:59:20,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 12:59:20,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-09-20 12:59:20,576 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 8 states. [2019-09-20 12:59:20,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:20,842 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2019-09-20 12:59:20,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 12:59:20,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-09-20 12:59:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:20,845 INFO L225 Difference]: With dead ends: 107 [2019-09-20 12:59:20,845 INFO L226 Difference]: Without dead ends: 75 [2019-09-20 12:59:20,847 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-09-20 12:59:20,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-09-20 12:59:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2019-09-20 12:59:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-09-20 12:59:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2019-09-20 12:59:20,874 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 28 [2019-09-20 12:59:20,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:20,875 INFO L475 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2019-09-20 12:59:20,875 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 12:59:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2019-09-20 12:59:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-20 12:59:20,880 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:20,881 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:20,881 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:20,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:20,881 INFO L82 PathProgramCache]: Analyzing trace with hash -81151448, now seen corresponding path program 1 times [2019-09-20 12:59:20,882 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:20,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:20,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:20,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:20,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-20 12:59:21,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:21,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 12:59:21,033 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 12:59:21,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 12:59:21,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 12:59:21,036 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 3 states. [2019-09-20 12:59:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:21,061 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2019-09-20 12:59:21,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 12:59:21,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-09-20 12:59:21,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:21,062 INFO L225 Difference]: With dead ends: 75 [2019-09-20 12:59:21,062 INFO L226 Difference]: Without dead ends: 54 [2019-09-20 12:59:21,063 INFO L636 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 [2019-09-20 12:59:21,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-09-20 12:59:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-09-20 12:59:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-09-20 12:59:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2019-09-20 12:59:21,071 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 44 [2019-09-20 12:59:21,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:21,071 INFO L475 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2019-09-20 12:59:21,071 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 12:59:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2019-09-20 12:59:21,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-20 12:59:21,073 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:21,073 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:21,073 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:21,074 INFO L82 PathProgramCache]: Analyzing trace with hash 619913130, now seen corresponding path program 1 times [2019-09-20 12:59:21,074 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:21,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:21,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:21,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:21,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:23,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 12:59:23,079 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-20 12:59:23,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:59:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:23,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-20 12:59:23,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:59:23,234 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-09-20 12:59:23,235 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 12:59:23,246 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 12:59:23,247 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 12:59:23,247 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2019-09-20 12:59:23,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 12:59:23,480 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.MultiDimensionalNestedStore.getInnermost(MultiDimensionalNestedStore.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-09-20 12:59:23,488 INFO L168 Benchmark]: Toolchain (without parser) took 5477.45 ms. Allocated memory was 138.9 MB in the beginning and 263.7 MB in the end (delta: 124.8 MB). Free memory was 84.9 MB in the beginning and 199.8 MB in the end (delta: -114.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:23,489 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 103.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:59:23,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.61 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 84.7 MB in the beginning and 174.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:23,491 INFO L168 Benchmark]: Boogie Preprocessor took 57.15 ms. Allocated memory is still 198.7 MB. Free memory was 174.4 MB in the beginning and 172.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:23,492 INFO L168 Benchmark]: RCFGBuilder took 544.12 ms. Allocated memory is still 198.7 MB. Free memory was 172.0 MB in the beginning and 147.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:23,493 INFO L168 Benchmark]: TraceAbstraction took 4422.78 ms. Allocated memory was 198.7 MB in the beginning and 263.7 MB in the end (delta: 65.0 MB). Free memory was 147.2 MB in the beginning and 199.8 MB in the end (delta: -52.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:23,497 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 103.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 448.61 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 84.7 MB in the beginning and 174.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.15 ms. Allocated memory is still 198.7 MB. Free memory was 174.4 MB in the beginning and 172.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 544.12 ms. Allocated memory is still 198.7 MB. Free memory was 172.0 MB in the beginning and 147.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4422.78 ms. Allocated memory was 198.7 MB in the beginning and 263.7 MB in the end (delta: 65.0 MB). Free memory was 147.2 MB in the beginning and 199.8 MB in the end (delta: -52.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.MultiDimensionalNestedStore.getInnermost(MultiDimensionalNestedStore.java:121) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...