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_smtcomp.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-reverse_simple_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:57:35,221 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:57:35,222 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:57:35,237 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:57:35,238 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:57:35,239 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:57:35,240 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:57:35,241 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:57:35,243 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:57:35,244 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:57:35,245 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:57:35,245 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:57:35,246 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:57:35,247 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:57:35,248 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:57:35,251 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:57:35,253 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:57:35,255 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:57:35,256 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:57:35,257 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:57:35,260 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 10:57:35,264 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:57:35,265 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:57:35,265 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_smtcomp.epf [2018-01-21 10:57:35,273 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:57:35,274 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:57:35,274 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:57:35,274 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:57:35,274 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:57:35,275 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:57:35,275 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:57:35,275 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:57:35,275 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:57:35,275 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:57:35,276 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:57:35,276 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:57:35,276 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:57:35,276 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:57:35,276 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:57:35,276 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:57:35,276 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:57:35,276 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:57:35,277 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:57:35,277 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:57:35,277 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:57:35,277 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:57:35,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:57:35,277 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:57:35,277 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:57:35,278 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:57:35,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:57:35,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:57:35,278 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:57:35,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:57:35,278 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:57:35,278 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:57:35,279 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:57:35,279 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:57:35,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:57:35,279 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:57:35,279 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:57:35,280 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:57:35,280 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:57:35,310 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:57:35,319 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:57:35,323 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:57:35,324 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:57:35,324 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:57:35,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-reverse_simple_true-unreach-call_true-valid-memsafety.i [2018-01-21 10:57:35,493 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:57:35,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:57:35,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:57:35,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:57:35,503 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:57:35,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:57:35" (1/1) ... [2018-01-21 10:57:35,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3724a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35, skipping insertion in model container [2018-01-21 10:57:35,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:57:35" (1/1) ... [2018-01-21 10:57:35,521 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:57:35,562 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:57:35,683 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:57:35,702 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:57:35,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35 WrapperNode [2018-01-21 10:57:35,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:57:35,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:57:35,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:57:35,714 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:57:35,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35" (1/1) ... [2018-01-21 10:57:35,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35" (1/1) ... [2018-01-21 10:57:35,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35" (1/1) ... [2018-01-21 10:57:35,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35" (1/1) ... [2018-01-21 10:57:35,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35" (1/1) ... [2018-01-21 10:57:35,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35" (1/1) ... [2018-01-21 10:57:35,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35" (1/1) ... [2018-01-21 10:57:35,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:57:35,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:57:35,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:57:35,748 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:57:35,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35" (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 10:57:35,794 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:57:35,794 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:57:35,794 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:57:35,794 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:57:35,794 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:57:35,795 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 10:57:35,795 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 10:57:35,795 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:57:35,795 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:57:35,795 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:57:35,795 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:57:35,795 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:57:35,795 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:57:35,796 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 10:57:35,796 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:57:35,796 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:57:35,796 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:57:36,131 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:57:36,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:57:36 BoogieIcfgContainer [2018-01-21 10:57:36,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:57:36,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:57:36,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:57:36,134 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:57:36,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:57:35" (1/3) ... [2018-01-21 10:57:36,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24908f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:57:36, skipping insertion in model container [2018-01-21 10:57:36,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:57:35" (2/3) ... [2018-01-21 10:57:36,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24908f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:57:36, skipping insertion in model container [2018-01-21 10:57:36,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:57:36" (3/3) ... [2018-01-21 10:57:36,137 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-reverse_simple_true-unreach-call_true-valid-memsafety.i [2018-01-21 10:57:36,143 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:57:36,148 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 10:57:36,191 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:57:36,192 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:57:36,192 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:57:36,192 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:57:36,192 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:57:36,192 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:57:36,192 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:57:36,193 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:57:36,193 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:57:36,212 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2018-01-21 10:57:36,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:57:36,217 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:57:36,218 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:57:36,219 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:57:36,222 INFO L82 PathProgramCache]: Analyzing trace with hash 227176, now seen corresponding path program 1 times [2018-01-21 10:57:36,224 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:57:36,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:36,263 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:57:36,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:36,264 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:57:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:57:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:57:36,316 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:57:36,322 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:57:36,329 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:57:36,329 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:57:36,330 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:57:36,330 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:57:36,330 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:57:36,330 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:57:36,330 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:57:36,330 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:57:36,330 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:57:36,334 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2018-01-21 10:57:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 10:57:36,337 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:57:36,337 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] [2018-01-21 10:57:36,337 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:57:36,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1937358689, now seen corresponding path program 1 times [2018-01-21 10:57:36,337 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:57:36,339 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:36,339 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:57:36,339 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:36,339 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:57:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:57:36,373 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:57:36,418 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 10:57:36,419 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:57:36,420 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:57:36,420 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:57:36,423 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:57:36,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:57:36,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:57:36,522 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 2 states. [2018-01-21 10:57:36,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:57:36,548 INFO L93 Difference]: Finished difference Result 148 states and 190 transitions. [2018-01-21 10:57:36,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:57:36,550 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2018-01-21 10:57:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:57:36,563 INFO L225 Difference]: With dead ends: 148 [2018-01-21 10:57:36,563 INFO L226 Difference]: Without dead ends: 81 [2018-01-21 10:57:36,566 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 10:57:36,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-21 10:57:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-01-21 10:57:36,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-21 10:57:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2018-01-21 10:57:36,604 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 30 [2018-01-21 10:57:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:57:36,605 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2018-01-21 10:57:36,605 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:57:36,605 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2018-01-21 10:57:36,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-21 10:57:36,606 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:57:36,606 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] [2018-01-21 10:57:36,606 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:57:36,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1988690091, now seen corresponding path program 1 times [2018-01-21 10:57:36,607 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:57:36,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:36,608 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:57:36,608 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:36,608 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:57:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:57:36,647 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:57:37,048 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 10:57:37,049 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:57:37,049 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 10:57:37,049 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:57:37,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 10:57:37,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 10:57:37,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-21 10:57:37,052 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 8 states. [2018-01-21 10:57:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:57:37,467 INFO L93 Difference]: Finished difference Result 170 states and 191 transitions. [2018-01-21 10:57:37,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-21 10:57:37,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-01-21 10:57:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:57:37,471 INFO L225 Difference]: With dead ends: 170 [2018-01-21 10:57:37,471 INFO L226 Difference]: Without dead ends: 109 [2018-01-21 10:57:37,472 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2018-01-21 10:57:37,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-01-21 10:57:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2018-01-21 10:57:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-21 10:57:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2018-01-21 10:57:37,481 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 41 [2018-01-21 10:57:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:57:37,482 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2018-01-21 10:57:37,482 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 10:57:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2018-01-21 10:57:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-21 10:57:37,483 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:57:37,483 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] [2018-01-21 10:57:37,483 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:57:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1854676585, now seen corresponding path program 1 times [2018-01-21 10:57:37,484 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:57:37,485 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:37,485 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:57:37,485 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:37,485 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:57:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:57:37,501 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:57:37,616 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 10:57:37,616 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:57:37,645 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 10:57:37,645 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:57:37,646 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:57:37,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:57:37,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:57:37,646 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 6 states. [2018-01-21 10:57:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:57:37,822 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2018-01-21 10:57:37,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 10:57:37,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2018-01-21 10:57:37,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:57:37,824 INFO L225 Difference]: With dead ends: 140 [2018-01-21 10:57:37,824 INFO L226 Difference]: Without dead ends: 101 [2018-01-21 10:57:37,825 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-01-21 10:57:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-21 10:57:37,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2018-01-21 10:57:37,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-21 10:57:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2018-01-21 10:57:37,835 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 41 [2018-01-21 10:57:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:57:37,836 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2018-01-21 10:57:37,836 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:57:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2018-01-21 10:57:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-21 10:57:37,838 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:57:37,838 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] [2018-01-21 10:57:37,838 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:57:37,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1544345424, now seen corresponding path program 1 times [2018-01-21 10:57:37,838 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:57:37,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:37,839 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:57:37,840 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:37,840 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:57:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:57:37,857 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:57:37,952 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 10:57:37,953 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:57:37,953 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 10:57:37,953 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:57:37,953 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 10:57:37,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 10:57:37,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 10:57:37,954 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand 5 states. [2018-01-21 10:57:38,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:57:38,121 INFO L93 Difference]: Finished difference Result 166 states and 182 transitions. [2018-01-21 10:57:38,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 10:57:38,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2018-01-21 10:57:38,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:57:38,123 INFO L225 Difference]: With dead ends: 166 [2018-01-21 10:57:38,123 INFO L226 Difference]: Without dead ends: 137 [2018-01-21 10:57:38,124 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 10:57:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-01-21 10:57:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 98. [2018-01-21 10:57:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-21 10:57:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2018-01-21 10:57:38,132 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 44 [2018-01-21 10:57:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:57:38,132 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2018-01-21 10:57:38,132 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 10:57:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2018-01-21 10:57:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-21 10:57:38,134 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:57:38,135 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 10:57:38,135 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:57:38,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1172413608, now seen corresponding path program 1 times [2018-01-21 10:57:38,135 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:57:38,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:38,136 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:57:38,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:57:38,137 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:57:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:57:38,154 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:57:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:57:38,210 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:57:38,210 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 10:57:38,211 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 51 with the following transitions: [2018-01-21 10:57:38,214 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [8], [10], [13], [25], [29], [31], [32], [37], [41], [69], [74], [78], [84], [85], [88], [89], [90], [91], [92], [93], [94], [101], [105], [109], [111], [112], [113], [114], [115], [119], [123], [127], [172], [176], [180], [189], [190], [192], [193], [198], [199], [200], [201], [202] [2018-01-21 10:57:38,275 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:57:38,276 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 10:58:31,748 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 10:58:31,748 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 10:58:31,759 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 10:58:31,759 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:58:31,759 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 10:58:31,765 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:58:31,765 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:58:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:58:31,836 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:58:31,845 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 10:58:31,846 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:58:31,848 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:58:31,849 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:58:31,849 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:58:31,849 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:58:31,849 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:58:31,849 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:58:31,849 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:58:31,849 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:58:31,849 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:58:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2018-01-21 10:58:31,851 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:58:31,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:58:31 BoogieIcfgContainer [2018-01-21 10:58:31,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:58:31,853 INFO L168 Benchmark]: Toolchain (without parser) took 56359.82 ms. Allocated memory was 301.5 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 259.8 MB in the beginning and 694.2 MB in the end (delta: -434.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. [2018-01-21 10:58:31,855 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 301.5 MB. Free memory is still 265.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:58:31,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.19 ms. Allocated memory is still 301.5 MB. Free memory was 258.8 MB in the beginning and 246.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. [2018-01-21 10:58:31,855 INFO L168 Benchmark]: Boogie Preprocessor took 34.18 ms. Allocated memory is still 301.5 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:58:31,856 INFO L168 Benchmark]: RCFGBuilder took 383.68 ms. Allocated memory is still 301.5 MB. Free memory was 244.7 MB in the beginning and 218.1 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 5.3 GB. [2018-01-21 10:58:31,856 INFO L168 Benchmark]: TraceAbstraction took 55720.38 ms. Allocated memory was 301.5 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 218.1 MB in the beginning and 694.2 MB in the end (delta: -476.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. [2018-01-21 10:58:31,858 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 301.5 MB. Free memory is still 265.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 215.19 ms. Allocated memory is still 301.5 MB. Free memory was 258.8 MB in the beginning and 246.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.18 ms. Allocated memory is still 301.5 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 383.68 ms. Allocated memory is still 301.5 MB. Free memory was 244.7 MB in the beginning and 218.1 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 55720.38 ms. Allocated memory was 301.5 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 218.1 MB in the beginning and 694.2 MB in the end (delta: -476.1 MB). Peak memory consumption was 1.5 GB. 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, 84 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=84occurred 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 - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 51 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 84 locations, 3 error locations. TIMEOUT Result, 55.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 321 SDtfs, 414 SDslu, 492 SDs, 0 SdLazy, 346 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 53.5s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 63 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 20382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 981]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 981). Cancelled while IsEmpty was searching accepting run (input had 84 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 84 locations, 3 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred 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: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-reverse_simple_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-58-31-866.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-reverse_simple_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-58-31-866.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-reverse_simple_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-58-31-866.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-reverse_simple_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-58-31-866.csv Completed graceful shutdown