java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-sorted_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 01:05:44,985 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 01:05:44,987 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 01:05:45,001 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 01:05:45,001 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 01:05:45,002 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 01:05:45,004 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 01:05:45,005 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 01:05:45,007 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 01:05:45,008 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 01:05:45,009 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 01:05:45,009 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 01:05:45,010 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 01:05:45,011 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 01:05:45,013 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 01:05:45,015 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 01:05:45,018 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 01:05:45,020 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 01:05:45,021 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 01:05:45,022 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 01:05:45,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 01:05:45,030 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-21 01:05:45,040 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 01:05:45,040 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 01:05:45,041 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 01:05:45,041 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 01:05:45,041 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 01:05:45,042 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 01:05:45,042 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 01:05:45,042 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 01:05:45,043 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 01:05:45,043 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 01:05:45,043 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 01:05:45,043 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 01:05:45,043 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 01:05:45,044 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 01:05:45,044 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 01:05:45,044 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 01:05:45,044 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 01:05:45,044 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 01:05:45,045 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 01:05:45,045 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 01:05:45,045 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 01:05:45,045 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 01:05:45,045 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 01:05:45,046 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 01:05:45,046 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 01:05:45,046 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 01:05:45,046 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 01:05:45,046 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 01:05:45,046 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 01:05:45,047 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 01:05:45,047 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 01:05:45,047 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 01:05:45,047 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 01:05:45,047 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 01:05:45,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 01:05:45,048 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 01:05:45,048 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 01:05:45,048 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 01:05:45,049 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 01:05:45,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 01:05:45,094 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 01:05:45,098 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 01:05:45,100 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 01:05:45,100 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 01:05:45,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-sorted_true-unreach-call_true-valid-memsafety.i [2018-01-21 01:05:45,284 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 01:05:45,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 01:05:45,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 01:05:45,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 01:05:45,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 01:05:45,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 01:05:45" (1/1) ... [2018-01-21 01:05:45,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11237bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45, skipping insertion in model container [2018-01-21 01:05:45,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 01:05:45" (1/1) ... [2018-01-21 01:05:45,320 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 01:05:45,366 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 01:05:45,485 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 01:05:45,507 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 01:05:45,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45 WrapperNode [2018-01-21 01:05:45,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 01:05:45,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 01:05:45,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 01:05:45,517 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 01:05:45,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45" (1/1) ... [2018-01-21 01:05:45,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45" (1/1) ... [2018-01-21 01:05:45,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45" (1/1) ... [2018-01-21 01:05:45,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45" (1/1) ... [2018-01-21 01:05:45,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45" (1/1) ... [2018-01-21 01:05:45,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45" (1/1) ... [2018-01-21 01:05:45,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45" (1/1) ... [2018-01-21 01:05:45,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 01:05:45,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 01:05:45,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 01:05:45,556 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 01:05:45,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45" (1/1) ... No working directory specified, using /storage/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 [2018-01-21 01:05:45,606 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 01:05:45,606 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 01:05:45,606 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 01:05:45,606 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 01:05:45,606 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 01:05:45,607 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 01:05:45,607 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 01:05:45,607 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 01:05:45,607 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 01:05:45,607 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 01:05:45,607 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 01:05:45,607 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 01:05:45,607 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 01:05:45,607 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 01:05:45,607 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 01:05:45,608 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 01:05:45,608 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 01:05:46,191 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 01:05:46,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 01:05:46 BoogieIcfgContainer [2018-01-21 01:05:46,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 01:05:46,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 01:05:46,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 01:05:46,195 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 01:05:46,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 01:05:45" (1/3) ... [2018-01-21 01:05:46,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16419dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 01:05:46, skipping insertion in model container [2018-01-21 01:05:46,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:05:45" (2/3) ... [2018-01-21 01:05:46,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16419dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 01:05:46, skipping insertion in model container [2018-01-21 01:05:46,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 01:05:46" (3/3) ... [2018-01-21 01:05:46,199 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-sorted_true-unreach-call_true-valid-memsafety.i [2018-01-21 01:05:46,209 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 01:05:46,217 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 01:05:46,271 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 01:05:46,271 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 01:05:46,272 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 01:05:46,272 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 01:05:46,272 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 01:05:46,272 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 01:05:46,272 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 01:05:46,272 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 01:05:46,273 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 01:05:46,301 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2018-01-21 01:05:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 01:05:46,310 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:05:46,311 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 01:05:46,312 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 01:05:46,317 INFO L82 PathProgramCache]: Analyzing trace with hash 330448, now seen corresponding path program 1 times [2018-01-21 01:05:46,320 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:05:46,379 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:46,379 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:05:46,380 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:46,380 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:05:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 01:05:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 01:05:46,446 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 01:05:46,454 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 01:05:46,463 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 01:05:46,464 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 01:05:46,464 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 01:05:46,464 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 01:05:46,464 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 01:05:46,464 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 01:05:46,464 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 01:05:46,465 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 01:05:46,465 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 01:05:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2018-01-21 01:05:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 01:05:46,472 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:05:46,472 INFO L322 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] [2018-01-21 01:05:46,472 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:05:46,473 INFO L82 PathProgramCache]: Analyzing trace with hash 439581356, now seen corresponding path program 1 times [2018-01-21 01:05:46,473 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:05:46,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:46,474 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:05:46,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:46,475 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:05:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:05:46,513 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:05:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 01:05:46,567 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:05:46,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 01:05:46,567 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:05:46,572 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 01:05:46,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 01:05:46,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 01:05:46,705 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 2 states. [2018-01-21 01:05:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:05:46,741 INFO L93 Difference]: Finished difference Result 194 states and 266 transitions. [2018-01-21 01:05:46,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 01:05:46,760 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2018-01-21 01:05:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:05:46,774 INFO L225 Difference]: With dead ends: 194 [2018-01-21 01:05:46,774 INFO L226 Difference]: Without dead ends: 106 [2018-01-21 01:05:46,778 INFO L525 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 [2018-01-21 01:05:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-01-21 01:05:46,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-01-21 01:05:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-01-21 01:05:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2018-01-21 01:05:46,827 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 32 [2018-01-21 01:05:46,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:05:46,828 INFO L432 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2018-01-21 01:05:46,828 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 01:05:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2018-01-21 01:05:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-21 01:05:46,830 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:05:46,831 INFO L322 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, 1, 1, 1, 1, 1] [2018-01-21 01:05:46,831 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:05:46,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1763191735, now seen corresponding path program 1 times [2018-01-21 01:05:46,831 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:05:46,832 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:46,833 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:05:46,833 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:46,833 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:05:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:05:46,875 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:05:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 01:05:46,944 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:05:46,944 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 01:05:46,945 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:05:46,947 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 01:05:46,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 01:05:46,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 01:05:46,948 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand 3 states. [2018-01-21 01:05:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:05:46,990 INFO L93 Difference]: Finished difference Result 226 states and 253 transitions. [2018-01-21 01:05:46,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 01:05:46,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-01-21 01:05:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:05:46,994 INFO L225 Difference]: With dead ends: 226 [2018-01-21 01:05:46,994 INFO L226 Difference]: Without dead ends: 130 [2018-01-21 01:05:46,995 INFO L525 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 [2018-01-21 01:05:46,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-21 01:05:47,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 117. [2018-01-21 01:05:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-01-21 01:05:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2018-01-21 01:05:47,004 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 49 [2018-01-21 01:05:47,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:05:47,004 INFO L432 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2018-01-21 01:05:47,004 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 01:05:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2018-01-21 01:05:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-01-21 01:05:47,006 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:05:47,006 INFO L322 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, 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] [2018-01-21 01:05:47,006 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:05:47,007 INFO L82 PathProgramCache]: Analyzing trace with hash 651675214, now seen corresponding path program 1 times [2018-01-21 01:05:47,007 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:05:47,008 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:47,008 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:05:47,008 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:47,008 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:05:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:05:47,049 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:05:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-21 01:05:47,164 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:05:47,164 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 01:05:47,164 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:05:47,164 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 01:05:47,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 01:05:47,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 01:05:47,165 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand 5 states. [2018-01-21 01:05:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:05:47,355 INFO L93 Difference]: Finished difference Result 208 states and 230 transitions. [2018-01-21 01:05:47,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 01:05:47,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2018-01-21 01:05:47,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:05:47,359 INFO L225 Difference]: With dead ends: 208 [2018-01-21 01:05:47,359 INFO L226 Difference]: Without dead ends: 197 [2018-01-21 01:05:47,360 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 01:05:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-21 01:05:47,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 127. [2018-01-21 01:05:47,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-21 01:05:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 141 transitions. [2018-01-21 01:05:47,375 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 141 transitions. Word has length 61 [2018-01-21 01:05:47,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:05:47,376 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 141 transitions. [2018-01-21 01:05:47,376 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 01:05:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 141 transitions. [2018-01-21 01:05:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-01-21 01:05:47,379 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:05:47,379 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 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, 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, 1, 1, 1] [2018-01-21 01:05:47,380 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:05:47,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1008289951, now seen corresponding path program 1 times [2018-01-21 01:05:47,380 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:05:47,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:47,381 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:05:47,381 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:47,381 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:05:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:05:47,412 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:05:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-01-21 01:05:47,516 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:05:47,517 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 01:05:47,517 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:05:47,517 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 01:05:47,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 01:05:47,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 01:05:47,518 INFO L87 Difference]: Start difference. First operand 127 states and 141 transitions. Second operand 6 states. [2018-01-21 01:05:47,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:05:47,802 INFO L93 Difference]: Finished difference Result 243 states and 267 transitions. [2018-01-21 01:05:47,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 01:05:47,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2018-01-21 01:05:47,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:05:47,806 INFO L225 Difference]: With dead ends: 243 [2018-01-21 01:05:47,807 INFO L226 Difference]: Without dead ends: 197 [2018-01-21 01:05:47,807 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-01-21 01:05:47,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-21 01:05:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 127. [2018-01-21 01:05:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-21 01:05:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2018-01-21 01:05:47,821 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 79 [2018-01-21 01:05:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:05:47,821 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2018-01-21 01:05:47,822 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 01:05:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2018-01-21 01:05:47,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-01-21 01:05:47,824 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:05:47,824 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 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, 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, 1, 1, 1, 1, 1] [2018-01-21 01:05:47,824 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:05:47,824 INFO L82 PathProgramCache]: Analyzing trace with hash -159123330, now seen corresponding path program 1 times [2018-01-21 01:05:47,824 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:05:47,825 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:47,826 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:05:47,826 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:47,826 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:05:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:05:47,849 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:05:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-01-21 01:05:47,981 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:05:47,982 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 01:05:47,982 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:05:47,982 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 01:05:47,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 01:05:47,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-21 01:05:47,983 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand 7 states. [2018-01-21 01:05:48,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:05:48,238 INFO L93 Difference]: Finished difference Result 222 states and 246 transitions. [2018-01-21 01:05:48,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 01:05:48,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2018-01-21 01:05:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:05:48,240 INFO L225 Difference]: With dead ends: 222 [2018-01-21 01:05:48,240 INFO L226 Difference]: Without dead ends: 148 [2018-01-21 01:05:48,241 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-01-21 01:05:48,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-21 01:05:48,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 133. [2018-01-21 01:05:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-21 01:05:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 147 transitions. [2018-01-21 01:05:48,253 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 147 transitions. Word has length 81 [2018-01-21 01:05:48,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:05:48,254 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 147 transitions. [2018-01-21 01:05:48,254 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 01:05:48,254 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 147 transitions. [2018-01-21 01:05:48,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-01-21 01:05:48,255 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:05:48,256 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 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, 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, 1, 1, 1, 1, 1] [2018-01-21 01:05:48,256 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:05:48,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1056516608, now seen corresponding path program 1 times [2018-01-21 01:05:48,256 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:05:48,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:48,257 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:05:48,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:05:48,257 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:05:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:05:48,282 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:05:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-21 01:05:48,450 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 01:05:48,450 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 01:05:48,451 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 82 with the following transitions: [2018-01-21 01:05:48,452 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [8], [10], [13], [15], [16], [17], [18], [19], [20], [21], [24], [30], [31], [39], [43], [48], [52], [58], [62], [64], [65], [73], [77], [106], [108], [109], [114], [118], [145], [146], [147], [148], [149], [152], [153], [161], [165], [167], [170], [171], [172], [178], [226], [230], [232], [233], [234], [238], [239], [244], [248], [256], [261], [265], [271], [272], [276], [280], [284], [286], [287], [288], [289], [293], [294], [296], [297], [302], [303], [304], [305], [306] [2018-01-21 01:05:48,500 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 01:05:48,500 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 01:05:48,877 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (distinct Int Bool) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:399) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:157) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) 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:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (distinct Int Bool) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:321) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:296) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.term(DiffWrapperScript.java:286) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.CongruenceClosureSmtUtils.lambda$1(CongruenceClosureSmtUtils.java:29) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.CongruenceClosureSmtUtils.congruenceClosureToCube(CongruenceClosureSmtUtils.java:30) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.WeqCcManager.weqCcToTerm(WeqCcManager.java:935) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.EqConstraint.getTerm(EqConstraint.java:185) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.EqDisjunctiveConstraint.lambda$2(EqDisjunctiveConstraint.java:121) at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1548) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.vpdomain.EqDisjunctiveConstraint.getTerm(EqDisjunctiveConstraint.java:121) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqPredicate.(EqPredicate.java:64) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqStateFactory.stateToPredicate(EqStateFactory.java:112) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqState.toEqPredicate(EqState.java:224) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqPostOperator.apply(EqPostOperator.java:121) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.vp.EqPostOperator.apply(EqPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$16(DisjunctiveAbstractState.java:363) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:443) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:363) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:148) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:388) ... 21 more [2018-01-21 01:05:48,881 INFO L168 Benchmark]: Toolchain (without parser) took 3595.88 ms. Allocated memory was 309.9 MB in the beginning and 462.4 MB in the end (delta: 152.6 MB). Free memory was 268.8 MB in the beginning and 315.5 MB in the end (delta: -46.8 MB). Peak memory consumption was 105.8 MB. Max. memory is 5.3 GB. [2018-01-21 01:05:48,882 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 309.9 MB. Free memory is still 274.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 01:05:48,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.27 ms. Allocated memory is still 309.9 MB. Free memory was 268.8 MB in the beginning and 256.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 01:05:48,882 INFO L168 Benchmark]: Boogie Preprocessor took 38.51 ms. Allocated memory is still 309.9 MB. Free memory was 256.8 MB in the beginning and 254.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 01:05:48,883 INFO L168 Benchmark]: RCFGBuilder took 636.37 ms. Allocated memory is still 309.9 MB. Free memory was 254.8 MB in the beginning and 223.9 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 5.3 GB. [2018-01-21 01:05:48,883 INFO L168 Benchmark]: TraceAbstraction took 2686.79 ms. Allocated memory was 309.9 MB in the beginning and 462.4 MB in the end (delta: 152.6 MB). Free memory was 223.9 MB in the beginning and 315.5 MB in the end (delta: -91.7 MB). Peak memory consumption was 60.9 MB. Max. memory is 5.3 GB. [2018-01-21 01:05:48,885 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 309.9 MB. Free memory is still 274.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 226.27 ms. Allocated memory is still 309.9 MB. Free memory was 268.8 MB in the beginning and 256.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.51 ms. Allocated memory is still 309.9 MB. Free memory was 256.8 MB in the beginning and 254.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 636.37 ms. Allocated memory is still 309.9 MB. Free memory was 254.8 MB in the beginning and 223.9 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2686.79 ms. Allocated memory was 309.9 MB in the beginning and 462.4 MB in the end (delta: 152.6 MB). Free memory was 223.9 MB in the beginning and 315.5 MB in the end (delta: -91.7 MB). Peak memory consumption was 60.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 3 procedures, 109 locations, 3 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (distinct Int Bool) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (distinct Int Bool): de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:399) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-sorted_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_01-05-48-892.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-sorted_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_01-05-48-892.csv Received shutdown request...