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/dll-circular_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 01:01:37,194 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 01:01:37,196 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 01:01:37,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 01:01:37,210 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 01:01:37,211 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 01:01:37,212 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 01:01:37,213 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 01:01:37,216 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 01:01:37,216 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 01:01:37,217 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 01:01:37,217 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 01:01:37,218 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 01:01:37,219 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 01:01:37,219 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 01:01:37,222 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 01:01:37,224 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 01:01:37,226 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 01:01:37,227 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 01:01:37,228 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 01:01:37,231 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 01:01:37,237 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 01:01:37,247 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 01:01:37,247 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 01:01:37,248 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 01:01:37,248 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 01:01:37,248 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 01:01:37,249 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 01:01:37,249 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 01:01:37,249 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 01:01:37,250 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 01:01:37,250 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 01:01:37,250 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 01:01:37,250 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 01:01:37,250 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 01:01:37,251 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 01:01:37,251 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 01:01:37,251 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 01:01:37,251 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 01:01:37,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 01:01:37,252 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 01:01:37,252 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 01:01:37,252 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 01:01:37,252 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 01:01:37,252 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 01:01:37,253 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 01:01:37,253 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 01:01:37,253 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 01:01:37,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 01:01:37,253 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 01:01:37,254 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 01:01:37,254 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 01:01:37,254 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 01:01:37,254 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 01:01:37,254 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 01:01:37,255 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 01:01:37,255 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 01:01:37,255 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 01:01:37,255 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 01:01:37,256 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 01:01:37,256 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 01:01:37,290 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 01:01:37,304 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 01:01:37,308 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 01:01:37,309 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 01:01:37,310 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 01:01:37,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 01:01:37,478 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 01:01:37,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 01:01:37,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 01:01:37,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 01:01:37,491 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 01:01:37,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 01:01:37" (1/1) ... [2018-01-21 01:01:37,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eeba7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37, skipping insertion in model container [2018-01-21 01:01:37,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 01:01:37" (1/1) ... [2018-01-21 01:01:37,508 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 01:01:37,548 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 01:01:37,669 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 01:01:37,687 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 01:01:37,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37 WrapperNode [2018-01-21 01:01:37,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 01:01:37,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 01:01:37,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 01:01:37,696 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 01:01:37,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37" (1/1) ... [2018-01-21 01:01:37,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37" (1/1) ... [2018-01-21 01:01:37,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37" (1/1) ... [2018-01-21 01:01:37,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37" (1/1) ... [2018-01-21 01:01:37,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37" (1/1) ... [2018-01-21 01:01:37,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37" (1/1) ... [2018-01-21 01:01:37,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37" (1/1) ... [2018-01-21 01:01:37,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 01:01:37,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 01:01:37,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 01:01:37,731 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 01:01:37,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37" (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 01:01:37,776 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 01:01:37,776 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 01:01:37,777 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 01:01:37,777 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 01:01:37,777 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 01:01:37,777 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 01:01:37,777 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 01:01:37,777 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 01:01:37,777 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 01:01:37,777 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 01:01:37,777 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 01:01:37,778 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 01:01:37,778 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 01:01:37,778 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 01:01:37,778 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 01:01:37,778 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 01:01:37,778 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 01:01:38,060 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 01:01:38,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 01:01:38 BoogieIcfgContainer [2018-01-21 01:01:38,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 01:01:38,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 01:01:38,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 01:01:38,064 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 01:01:38,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 01:01:37" (1/3) ... [2018-01-21 01:01:38,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307d8325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 01:01:38, skipping insertion in model container [2018-01-21 01:01:38,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:01:37" (2/3) ... [2018-01-21 01:01:38,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307d8325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 01:01:38, skipping insertion in model container [2018-01-21 01:01:38,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 01:01:38" (3/3) ... [2018-01-21 01:01:38,067 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 01:01:38,074 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 01:01:38,081 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 01:01:38,119 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 01:01:38,119 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 01:01:38,119 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 01:01:38,119 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 01:01:38,119 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 01:01:38,119 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 01:01:38,119 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 01:01:38,119 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 01:01:38,120 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 01:01:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 01:01:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 01:01:38,143 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:01:38,144 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 01:01:38,144 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 01:01:38,148 INFO L82 PathProgramCache]: Analyzing trace with hash 190435, now seen corresponding path program 1 times [2018-01-21 01:01:38,150 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:01:38,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:38,192 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:01:38,192 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:38,192 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:01:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 01:01:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 01:01:38,245 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 01:01:38,252 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 01:01:38,258 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 01:01:38,258 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 01:01:38,259 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 01:01:38,259 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 01:01:38,259 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 01:01:38,259 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 01:01:38,259 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 01:01:38,259 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 01:01:38,260 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 01:01:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 01:01:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 01:01:38,265 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:01:38,265 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] [2018-01-21 01:01:38,265 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:01:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1526713431, now seen corresponding path program 1 times [2018-01-21 01:01:38,266 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:01:38,267 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:38,267 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:01:38,268 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:38,268 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:01:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:01:38,307 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:01:38,435 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 01:01:38,437 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:01:38,437 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 01:01:38,437 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:01:38,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 01:01:38,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 01:01:38,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 01:01:38,452 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2018-01-21 01:01:38,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:01:38,473 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2018-01-21 01:01:38,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 01:01:38,474 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-21 01:01:38,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:01:38,483 INFO L225 Difference]: With dead ends: 126 [2018-01-21 01:01:38,483 INFO L226 Difference]: Without dead ends: 66 [2018-01-21 01:01:38,486 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 01:01:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-21 01:01:38,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-01-21 01:01:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-21 01:01:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2018-01-21 01:01:38,516 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 25 [2018-01-21 01:01:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:01:38,516 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2018-01-21 01:01:38,516 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 01:01:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2018-01-21 01:01:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 01:01:38,517 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:01:38,518 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] [2018-01-21 01:01:38,518 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:01:38,518 INFO L82 PathProgramCache]: Analyzing trace with hash -97713131, now seen corresponding path program 1 times [2018-01-21 01:01:38,518 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:01:38,519 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:38,519 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:01:38,519 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:38,519 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:01:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:01:38,561 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:01:39,156 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 01:01:39,157 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:01:39,157 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-21 01:01:39,157 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:01:39,159 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-21 01:01:39,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-21 01:01:39,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-01-21 01:01:39,160 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 10 states. [2018-01-21 01:01:39,445 WARN L146 SmtUtils]: Spent 110ms on a formula simplification. DAG size of input: 43 DAG size of output 35 [2018-01-21 01:01:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:01:39,711 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2018-01-21 01:01:39,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-21 01:01:39,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2018-01-21 01:01:39,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:01:39,715 INFO L225 Difference]: With dead ends: 132 [2018-01-21 01:01:39,715 INFO L226 Difference]: Without dead ends: 118 [2018-01-21 01:01:39,716 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2018-01-21 01:01:39,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-21 01:01:39,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2018-01-21 01:01:39,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-01-21 01:01:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2018-01-21 01:01:39,724 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 33 [2018-01-21 01:01:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:01:39,724 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2018-01-21 01:01:39,725 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-21 01:01:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2018-01-21 01:01:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-21 01:01:39,726 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:01:39,726 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] [2018-01-21 01:01:39,726 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:01:39,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1309040711, now seen corresponding path program 1 times [2018-01-21 01:01:39,727 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:01:39,728 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:39,728 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:01:39,728 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:39,728 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:01:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:01:39,747 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:01:39,793 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 01:01:39,794 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:01:39,794 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 01:01:39,794 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:01:39,795 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 01:01:39,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 01:01:39,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 01:01:39,796 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 3 states. [2018-01-21 01:01:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:01:39,825 INFO L93 Difference]: Finished difference Result 185 states and 204 transitions. [2018-01-21 01:01:39,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 01:01:39,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-01-21 01:01:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:01:39,828 INFO L225 Difference]: With dead ends: 185 [2018-01-21 01:01:39,828 INFO L226 Difference]: Without dead ends: 130 [2018-01-21 01:01:39,829 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 01:01:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-21 01:01:39,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 96. [2018-01-21 01:01:39,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-21 01:01:39,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2018-01-21 01:01:39,843 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 45 [2018-01-21 01:01:39,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:01:39,844 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2018-01-21 01:01:39,844 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 01:01:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2018-01-21 01:01:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-21 01:01:39,846 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:01:39,846 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] [2018-01-21 01:01:39,846 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:01:39,847 INFO L82 PathProgramCache]: Analyzing trace with hash -403724794, now seen corresponding path program 1 times [2018-01-21 01:01:39,847 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:01:39,848 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:39,848 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:01:39,848 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:39,848 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:01:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:01:39,868 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:01:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 01:01:40,446 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:01:40,446 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-01-21 01:01:40,446 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:01:40,447 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-21 01:01:40,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-21 01:01:40,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-01-21 01:01:40,447 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand 13 states. [2018-01-21 01:01:40,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:01:40,833 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2018-01-21 01:01:40,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-21 01:01:40,833 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2018-01-21 01:01:40,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:01:40,835 INFO L225 Difference]: With dead ends: 166 [2018-01-21 01:01:40,835 INFO L226 Difference]: Without dead ends: 136 [2018-01-21 01:01:40,836 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2018-01-21 01:01:40,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-01-21 01:01:40,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 101. [2018-01-21 01:01:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-21 01:01:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2018-01-21 01:01:40,846 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 45 [2018-01-21 01:01:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:01:40,847 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2018-01-21 01:01:40,847 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-21 01:01:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2018-01-21 01:01:40,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-21 01:01:40,848 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:01:40,848 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] [2018-01-21 01:01:40,848 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:01:40,848 INFO L82 PathProgramCache]: Analyzing trace with hash 804308226, now seen corresponding path program 1 times [2018-01-21 01:01:40,848 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:01:40,849 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:40,849 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:01:40,849 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:01:40,850 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:01:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:01:40,868 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:01:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 01:01:41,185 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 01:01:41,185 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 01:01:41,186 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-01-21 01:01:41,188 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [5], [9], [11], [14], [65], [66], [67], [71], [76], [80], [88], [90], [93], [95], [99], [100], [101], [102], [107], [108], [109], [110], [111], [117], [121], [127], [128], [132], [133], [137], [139], [142], [151], [152], [153], [155], [156], [161], [162], [163], [164], [165] [2018-01-21 01:01:41,249 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 01:01:41,250 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 01:01:41,663 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 01:01:41,666 INFO L168 Benchmark]: Toolchain (without parser) took 4187.78 ms. Allocated memory was 302.0 MB in the beginning and 516.9 MB in the end (delta: 215.0 MB). Free memory was 260.3 MB in the beginning and 379.0 MB in the end (delta: -118.7 MB). Peak memory consumption was 96.3 MB. Max. memory is 5.3 GB. [2018-01-21 01:01:41,667 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 266.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 01:01:41,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.38 ms. Allocated memory is still 302.0 MB. Free memory was 259.3 MB in the beginning and 247.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 01:01:41,668 INFO L168 Benchmark]: Boogie Preprocessor took 34.50 ms. Allocated memory is still 302.0 MB. Free memory was 247.3 MB in the beginning and 245.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 01:01:41,668 INFO L168 Benchmark]: RCFGBuilder took 329.72 ms. Allocated memory is still 302.0 MB. Free memory was 245.3 MB in the beginning and 222.7 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. [2018-01-21 01:01:41,669 INFO L168 Benchmark]: TraceAbstraction took 3603.69 ms. Allocated memory was 302.0 MB in the beginning and 516.9 MB in the end (delta: 215.0 MB). Free memory was 222.7 MB in the beginning and 379.0 MB in the end (delta: -156.3 MB). Peak memory consumption was 58.7 MB. Max. memory is 5.3 GB. [2018-01-21 01:01:41,671 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 302.0 MB. Free memory is still 266.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 211.38 ms. Allocated memory is still 302.0 MB. Free memory was 259.3 MB in the beginning and 247.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.50 ms. Allocated memory is still 302.0 MB. Free memory was 247.3 MB in the beginning and 245.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 329.72 ms. Allocated memory is still 302.0 MB. Free memory was 245.3 MB in the beginning and 222.7 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3603.69 ms. Allocated memory was 302.0 MB in the beginning and 516.9 MB in the end (delta: 215.0 MB). Free memory was 222.7 MB in the beginning and 379.0 MB in the end (delta: -156.3 MB). Peak memory consumption was 58.7 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, 69 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=69occurred 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/dll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_01-01-41-677.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_01-01-41-677.csv Received shutdown request...