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_precise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0102_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:39:07,323 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:39:07,325 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:39:07,340 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:39:07,340 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:39:07,341 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:39:07,342 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:39:07,343 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:39:07,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:39:07,345 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:39:07,346 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:39:07,346 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:39:07,347 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:39:07,348 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:39:07,349 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:39:07,351 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:39:07,353 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:39:07,355 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:39:07,356 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:39:07,358 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:39:07,360 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:39:07,365 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 05:39:07,365 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 05:39:07,366 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_precise.epf [2018-01-21 05:39:07,376 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:39:07,376 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:39:07,377 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:39:07,377 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:39:07,377 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:39:07,377 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:39:07,378 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:39:07,378 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:39:07,378 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:39:07,379 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:39:07,379 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:39:07,379 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:39:07,379 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:39:07,379 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:39:07,380 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:39:07,380 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:39:07,380 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:39:07,380 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:39:07,380 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:39:07,380 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:39:07,381 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:39:07,381 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:39:07,381 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:39:07,381 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:39:07,381 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:39:07,382 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:39:07,382 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:39:07,382 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:39:07,382 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:39:07,382 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:39:07,382 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:39:07,383 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:39:07,383 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:39:07,383 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:39:07,383 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:39:07,383 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:39:07,384 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:39:07,384 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:39:07,385 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:39:07,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:39:07,433 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:39:07,437 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:39:07,439 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:39:07,439 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:39:07,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0102_false-valid-memtrack.i [2018-01-21 05:39:07,645 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:39:07,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:39:07,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:39:07,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:39:07,656 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:39:07,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:39:07" (1/1) ... [2018-01-21 05:39:07,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b83b4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07, skipping insertion in model container [2018-01-21 05:39:07,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:39:07" (1/1) ... [2018-01-21 05:39:07,680 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:39:07,722 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:39:07,839 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:39:07,860 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:39:07,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07 WrapperNode [2018-01-21 05:39:07,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:39:07,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:39:07,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:39:07,871 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:39:07,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07" (1/1) ... [2018-01-21 05:39:07,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07" (1/1) ... [2018-01-21 05:39:07,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07" (1/1) ... [2018-01-21 05:39:07,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07" (1/1) ... [2018-01-21 05:39:07,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07" (1/1) ... [2018-01-21 05:39:07,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07" (1/1) ... [2018-01-21 05:39:07,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07" (1/1) ... [2018-01-21 05:39:07,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:39:07,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:39:07,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:39:07,914 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:39:07,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07" (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 05:39:07,959 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:39:07,959 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:39:07,959 INFO L136 BoogieDeclarations]: Found implementation of procedure __list_add [2018-01-21 05:39:07,959 INFO L136 BoogieDeclarations]: Found implementation of procedure list_add_tail [2018-01-21 05:39:07,959 INFO L136 BoogieDeclarations]: Found implementation of procedure destroy_sub [2018-01-21 05:39:07,960 INFO L136 BoogieDeclarations]: Found implementation of procedure destroy_top [2018-01-21 05:39:07,960 INFO L136 BoogieDeclarations]: Found implementation of procedure insert_sub [2018-01-21 05:39:07,960 INFO L136 BoogieDeclarations]: Found implementation of procedure create_sub_list [2018-01-21 05:39:07,960 INFO L136 BoogieDeclarations]: Found implementation of procedure insert_top [2018-01-21 05:39:07,960 INFO L136 BoogieDeclarations]: Found implementation of procedure create_top [2018-01-21 05:39:07,960 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:39:07,961 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:39:07,961 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:39:07,961 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 05:39:07,961 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 05:39:07,961 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:39:07,961 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:39:07,961 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:39:07,961 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 05:39:07,962 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-21 05:39:07,962 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:39:07,962 INFO L128 BoogieDeclarations]: Found specification of procedure __list_add [2018-01-21 05:39:07,962 INFO L128 BoogieDeclarations]: Found specification of procedure list_add_tail [2018-01-21 05:39:07,962 INFO L128 BoogieDeclarations]: Found specification of procedure destroy_sub [2018-01-21 05:39:07,963 INFO L128 BoogieDeclarations]: Found specification of procedure destroy_top [2018-01-21 05:39:07,963 INFO L128 BoogieDeclarations]: Found specification of procedure insert_sub [2018-01-21 05:39:07,963 INFO L128 BoogieDeclarations]: Found specification of procedure create_sub_list [2018-01-21 05:39:07,963 INFO L128 BoogieDeclarations]: Found specification of procedure insert_top [2018-01-21 05:39:07,963 INFO L128 BoogieDeclarations]: Found specification of procedure create_top [2018-01-21 05:39:07,963 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:39:07,963 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:39:07,963 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:39:08,327 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:39:08,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:39:08 BoogieIcfgContainer [2018-01-21 05:39:08,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:39:08,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:39:08,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:39:08,365 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:39:08,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:39:07" (1/3) ... [2018-01-21 05:39:08,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d531577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:39:08, skipping insertion in model container [2018-01-21 05:39:08,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:39:07" (2/3) ... [2018-01-21 05:39:08,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d531577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:39:08, skipping insertion in model container [2018-01-21 05:39:08,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:39:08" (3/3) ... [2018-01-21 05:39:08,368 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0102_false-valid-memtrack.i [2018-01-21 05:39:08,374 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:39:08,380 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-01-21 05:39:08,424 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:39:08,424 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:39:08,424 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:39:08,424 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:39:08,424 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:39:08,424 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:39:08,424 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:39:08,424 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == __list_addErr0EnsuresViolation======== [2018-01-21 05:39:08,425 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:39:08,443 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2018-01-21 05:39:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 05:39:08,450 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:39:08,451 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] [2018-01-21 05:39:08,451 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__list_addErr0EnsuresViolation]=== [2018-01-21 05:39:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1080187328, now seen corresponding path program 1 times [2018-01-21 05:39:08,456 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:39:08,496 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:08,496 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:39:08,496 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:08,497 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:39:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:39:08,588 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:39:08,669 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 05:39:08,672 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:39:08,672 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:39:08,672 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:39:08,676 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:39:08,692 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:39:08,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:39:08,696 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 2 states. [2018-01-21 05:39:08,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:39:08,809 INFO L93 Difference]: Finished difference Result 181 states and 211 transitions. [2018-01-21 05:39:08,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:39:08,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2018-01-21 05:39:08,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:39:08,816 INFO L225 Difference]: With dead ends: 181 [2018-01-21 05:39:08,817 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:39:08,823 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 05:39:08,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:39:08,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:39:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:39:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:39:08,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-01-21 05:39:08,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:39:08,843 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:39:08,843 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:39:08,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:39:08,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:39:08,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 05:39:08,910 INFO L401 ceAbstractionStarter]: For program point L627'(line 627) no Hoare annotation was computed. [2018-01-21 05:39:08,911 INFO L401 ceAbstractionStarter]: For program point __list_addErr0EnsuresViolation(lines 623 631) no Hoare annotation was computed. [2018-01-21 05:39:08,911 INFO L401 ceAbstractionStarter]: For program point __list_addEXIT(lines 623 631) no Hoare annotation was computed. [2018-01-21 05:39:08,911 INFO L401 ceAbstractionStarter]: For program point L629(line 629) no Hoare annotation was computed. [2018-01-21 05:39:08,911 INFO L401 ceAbstractionStarter]: For program point L628(line 628) no Hoare annotation was computed. [2018-01-21 05:39:08,911 INFO L401 ceAbstractionStarter]: For program point L627(line 627) no Hoare annotation was computed. [2018-01-21 05:39:08,911 INFO L404 ceAbstractionStarter]: At program point __list_addENTRY(lines 623 631) the Hoare annotation is: true [2018-01-21 05:39:08,911 INFO L401 ceAbstractionStarter]: For program point __list_addFINAL(lines 623 631) no Hoare annotation was computed. [2018-01-21 05:39:08,911 INFO L401 ceAbstractionStarter]: For program point insert_subFINAL(lines 664 671) no Hoare annotation was computed. [2018-01-21 05:39:08,911 INFO L401 ceAbstractionStarter]: For program point L667(lines 667 668) no Hoare annotation was computed. [2018-01-21 05:39:08,912 INFO L401 ceAbstractionStarter]: For program point L666(line 666) no Hoare annotation was computed. [2018-01-21 05:39:08,912 INFO L401 ceAbstractionStarter]: For program point L667''(lines 667 668) no Hoare annotation was computed. [2018-01-21 05:39:08,912 INFO L401 ceAbstractionStarter]: For program point insert_subErr0EnsuresViolation(lines 664 671) no Hoare annotation was computed. [2018-01-21 05:39:08,912 INFO L404 ceAbstractionStarter]: At program point L669(line 669) the Hoare annotation is: true [2018-01-21 05:39:08,912 INFO L401 ceAbstractionStarter]: For program point insert_subEXIT(lines 664 671) no Hoare annotation was computed. [2018-01-21 05:39:08,912 INFO L404 ceAbstractionStarter]: At program point insert_subENTRY(lines 664 671) the Hoare annotation is: true [2018-01-21 05:39:08,912 INFO L401 ceAbstractionStarter]: For program point L666'(line 666) no Hoare annotation was computed. [2018-01-21 05:39:08,912 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 701) no Hoare annotation was computed. [2018-01-21 05:39:08,912 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 701) no Hoare annotation was computed. [2018-01-21 05:39:08,912 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 701) the Hoare annotation is: true [2018-01-21 05:39:08,912 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 701) no Hoare annotation was computed. [2018-01-21 05:39:08,912 INFO L404 ceAbstractionStarter]: At program point L692(line 692) the Hoare annotation is: true [2018-01-21 05:39:08,913 INFO L401 ceAbstractionStarter]: For program point L691(lines 691 693) no Hoare annotation was computed. [2018-01-21 05:39:08,913 INFO L404 ceAbstractionStarter]: At program point L691''(lines 691 693) the Hoare annotation is: true [2018-01-21 05:39:08,913 INFO L401 ceAbstractionStarter]: For program point create_topErr0EnsuresViolation(lines 689 694) no Hoare annotation was computed. [2018-01-21 05:39:08,913 INFO L404 ceAbstractionStarter]: At program point create_topENTRY(lines 689 694) the Hoare annotation is: true [2018-01-21 05:39:08,913 INFO L401 ceAbstractionStarter]: For program point create_topEXIT(lines 689 694) no Hoare annotation was computed. [2018-01-21 05:39:08,913 INFO L401 ceAbstractionStarter]: For program point L692'(line 692) no Hoare annotation was computed. [2018-01-21 05:39:08,913 INFO L401 ceAbstractionStarter]: For program point L691'''(lines 691 693) no Hoare annotation was computed. [2018-01-21 05:39:08,913 INFO L401 ceAbstractionStarter]: For program point insert_topErr0EnsuresViolation(lines 680 688) no Hoare annotation was computed. [2018-01-21 05:39:08,913 INFO L404 ceAbstractionStarter]: At program point L685(line 685) the Hoare annotation is: true [2018-01-21 05:39:08,913 INFO L401 ceAbstractionStarter]: For program point L683(lines 683 684) no Hoare annotation was computed. [2018-01-21 05:39:08,913 INFO L404 ceAbstractionStarter]: At program point L683''(lines 683 684) the Hoare annotation is: true [2018-01-21 05:39:08,914 INFO L401 ceAbstractionStarter]: For program point L682(line 682) no Hoare annotation was computed. [2018-01-21 05:39:08,914 INFO L401 ceAbstractionStarter]: For program point L682'(line 682) no Hoare annotation was computed. [2018-01-21 05:39:08,914 INFO L404 ceAbstractionStarter]: At program point L686(line 686) the Hoare annotation is: true [2018-01-21 05:39:08,914 INFO L404 ceAbstractionStarter]: At program point insert_topENTRY(lines 680 688) the Hoare annotation is: true [2018-01-21 05:39:08,914 INFO L401 ceAbstractionStarter]: For program point insert_topEXIT(lines 680 688) no Hoare annotation was computed. [2018-01-21 05:39:08,914 INFO L401 ceAbstractionStarter]: For program point insert_topFINAL(lines 680 688) no Hoare annotation was computed. [2018-01-21 05:39:08,914 INFO L401 ceAbstractionStarter]: For program point L650(line 650) no Hoare annotation was computed. [2018-01-21 05:39:08,914 INFO L401 ceAbstractionStarter]: For program point L650'(line 650) no Hoare annotation was computed. [2018-01-21 05:39:08,914 INFO L401 ceAbstractionStarter]: For program point destroy_subErr0EnsuresViolation(lines 645 653) no Hoare annotation was computed. [2018-01-21 05:39:08,914 INFO L401 ceAbstractionStarter]: For program point L649(line 649) no Hoare annotation was computed. [2018-01-21 05:39:08,914 INFO L401 ceAbstractionStarter]: For program point L648(lines 648 652) no Hoare annotation was computed. [2018-01-21 05:39:08,915 INFO L404 ceAbstractionStarter]: At program point destroy_subENTRY(lines 645 653) the Hoare annotation is: true [2018-01-21 05:39:08,915 INFO L401 ceAbstractionStarter]: For program point L647(line 647) no Hoare annotation was computed. [2018-01-21 05:39:08,915 INFO L404 ceAbstractionStarter]: At program point L648''(lines 648 652) the Hoare annotation is: true [2018-01-21 05:39:08,915 INFO L401 ceAbstractionStarter]: For program point L648'''(lines 648 652) no Hoare annotation was computed. [2018-01-21 05:39:08,915 INFO L401 ceAbstractionStarter]: For program point L649'(line 649) no Hoare annotation was computed. [2018-01-21 05:39:08,915 INFO L401 ceAbstractionStarter]: For program point L647'(line 647) no Hoare annotation was computed. [2018-01-21 05:39:08,915 INFO L401 ceAbstractionStarter]: For program point destroy_subEXIT(lines 645 653) no Hoare annotation was computed. [2018-01-21 05:39:08,915 INFO L401 ceAbstractionStarter]: For program point L676'''(lines 676 678) no Hoare annotation was computed. [2018-01-21 05:39:08,915 INFO L401 ceAbstractionStarter]: For program point L674(line 674) no Hoare annotation was computed. [2018-01-21 05:39:08,915 INFO L401 ceAbstractionStarter]: For program point L674'(line 674) no Hoare annotation was computed. [2018-01-21 05:39:08,915 INFO L404 ceAbstractionStarter]: At program point L677(line 677) the Hoare annotation is: true [2018-01-21 05:39:08,915 INFO L401 ceAbstractionStarter]: For program point L676(lines 676 678) no Hoare annotation was computed. [2018-01-21 05:39:08,916 INFO L404 ceAbstractionStarter]: At program point L676''(lines 676 678) the Hoare annotation is: true [2018-01-21 05:39:08,916 INFO L401 ceAbstractionStarter]: For program point create_sub_listEXIT(lines 672 679) no Hoare annotation was computed. [2018-01-21 05:39:08,916 INFO L404 ceAbstractionStarter]: At program point create_sub_listENTRY(lines 672 679) the Hoare annotation is: true [2018-01-21 05:39:08,916 INFO L401 ceAbstractionStarter]: For program point create_sub_listErr0EnsuresViolation(lines 672 679) no Hoare annotation was computed. [2018-01-21 05:39:08,916 INFO L401 ceAbstractionStarter]: For program point L677'(line 677) no Hoare annotation was computed. [2018-01-21 05:39:08,916 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 701) the Hoare annotation is: true [2018-01-21 05:39:08,916 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 701) no Hoare annotation was computed. [2018-01-21 05:39:08,917 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 701) the Hoare annotation is: true [2018-01-21 05:39:08,917 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 701) no Hoare annotation was computed. [2018-01-21 05:39:08,917 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 701) no Hoare annotation was computed. [2018-01-21 05:39:08,917 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 695 701) the Hoare annotation is: true [2018-01-21 05:39:08,917 INFO L401 ceAbstractionStarter]: For program point L697'''(line 697) no Hoare annotation was computed. [2018-01-21 05:39:08,917 INFO L401 ceAbstractionStarter]: For program point L697'(line 697) no Hoare annotation was computed. [2018-01-21 05:39:08,917 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 695 701) no Hoare annotation was computed. [2018-01-21 05:39:08,917 INFO L401 ceAbstractionStarter]: For program point L699(line 699) no Hoare annotation was computed. [2018-01-21 05:39:08,918 INFO L404 ceAbstractionStarter]: At program point L698(line 698) the Hoare annotation is: true [2018-01-21 05:39:08,918 INFO L401 ceAbstractionStarter]: For program point L697(line 697) no Hoare annotation was computed. [2018-01-21 05:39:08,918 INFO L404 ceAbstractionStarter]: At program point L697''(line 697) the Hoare annotation is: true [2018-01-21 05:39:08,918 INFO L401 ceAbstractionStarter]: For program point L697''''(line 697) no Hoare annotation was computed. [2018-01-21 05:39:08,918 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 695 701) no Hoare annotation was computed. [2018-01-21 05:39:08,918 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 695 701) no Hoare annotation was computed. [2018-01-21 05:39:08,918 INFO L401 ceAbstractionStarter]: For program point list_add_tailEXIT(lines 632 635) no Hoare annotation was computed. [2018-01-21 05:39:08,918 INFO L404 ceAbstractionStarter]: At program point L634'(line 634) the Hoare annotation is: true [2018-01-21 05:39:08,918 INFO L401 ceAbstractionStarter]: For program point list_add_tailFINAL(lines 632 635) no Hoare annotation was computed. [2018-01-21 05:39:08,918 INFO L401 ceAbstractionStarter]: For program point L634(line 634) no Hoare annotation was computed. [2018-01-21 05:39:08,918 INFO L401 ceAbstractionStarter]: For program point L634''(line 634) no Hoare annotation was computed. [2018-01-21 05:39:08,918 INFO L404 ceAbstractionStarter]: At program point list_add_tailENTRY(lines 632 635) the Hoare annotation is: true [2018-01-21 05:39:08,919 INFO L401 ceAbstractionStarter]: For program point list_add_tailErr0EnsuresViolation(lines 632 635) no Hoare annotation was computed. [2018-01-21 05:39:08,919 INFO L401 ceAbstractionStarter]: For program point destroy_topErr0EnsuresViolation(lines 654 663) no Hoare annotation was computed. [2018-01-21 05:39:08,919 INFO L401 ceAbstractionStarter]: For program point L660(line 660) no Hoare annotation was computed. [2018-01-21 05:39:08,919 INFO L401 ceAbstractionStarter]: For program point L656(line 656) no Hoare annotation was computed. [2018-01-21 05:39:08,919 INFO L404 ceAbstractionStarter]: At program point L659(line 659) the Hoare annotation is: true [2018-01-21 05:39:08,919 INFO L401 ceAbstractionStarter]: For program point L658(line 658) no Hoare annotation was computed. [2018-01-21 05:39:08,919 INFO L404 ceAbstractionStarter]: At program point L657''(lines 657 662) the Hoare annotation is: true [2018-01-21 05:39:08,919 INFO L401 ceAbstractionStarter]: For program point L657(lines 657 662) no Hoare annotation was computed. [2018-01-21 05:39:08,919 INFO L401 ceAbstractionStarter]: For program point L659'(line 659) no Hoare annotation was computed. [2018-01-21 05:39:08,919 INFO L401 ceAbstractionStarter]: For program point L658'(line 658) no Hoare annotation was computed. [2018-01-21 05:39:08,919 INFO L401 ceAbstractionStarter]: For program point L656'(line 656) no Hoare annotation was computed. [2018-01-21 05:39:08,919 INFO L401 ceAbstractionStarter]: For program point L657'''(lines 657 662) no Hoare annotation was computed. [2018-01-21 05:39:08,920 INFO L404 ceAbstractionStarter]: At program point destroy_topENTRY(lines 654 663) the Hoare annotation is: true [2018-01-21 05:39:08,920 INFO L401 ceAbstractionStarter]: For program point destroy_topEXIT(lines 654 663) no Hoare annotation was computed. [2018-01-21 05:39:08,923 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:39:08,923 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:39:08,923 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:39:08,923 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:39:08,923 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:39:08,923 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:39:08,923 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:39:08,923 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == insert_subErr0EnsuresViolation======== [2018-01-21 05:39:08,923 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:39:08,925 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2018-01-21 05:39:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-21 05:39:08,927 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:39:08,928 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] [2018-01-21 05:39:08,928 INFO L371 AbstractCegarLoop]: === Iteration 1 === [insert_subErr0EnsuresViolation]=== [2018-01-21 05:39:08,928 INFO L82 PathProgramCache]: Analyzing trace with hash -630072835, now seen corresponding path program 1 times [2018-01-21 05:39:08,928 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:39:08,929 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:08,929 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:39:08,929 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:08,929 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:39:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:39:08,959 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:39:09,000 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 05:39:09,000 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:39:09,001 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:39:09,001 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:39:09,001 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:39:09,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:39:09,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:39:09,002 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 2 states. [2018-01-21 05:39:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:39:09,014 INFO L93 Difference]: Finished difference Result 181 states and 211 transitions. [2018-01-21 05:39:09,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:39:09,014 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2018-01-21 05:39:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:39:09,017 INFO L225 Difference]: With dead ends: 181 [2018-01-21 05:39:09,017 INFO L226 Difference]: Without dead ends: 54 [2018-01-21 05:39:09,018 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 05:39:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-01-21 05:39:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-01-21 05:39:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 05:39:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2018-01-21 05:39:09,034 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 42 [2018-01-21 05:39:09,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:39:09,035 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2018-01-21 05:39:09,035 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:39:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2018-01-21 05:39:09,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-21 05:39:09,037 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:39:09,037 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] [2018-01-21 05:39:09,038 INFO L371 AbstractCegarLoop]: === Iteration 2 === [insert_subErr0EnsuresViolation]=== [2018-01-21 05:39:09,038 INFO L82 PathProgramCache]: Analyzing trace with hash 2076546559, now seen corresponding path program 1 times [2018-01-21 05:39:09,038 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:39:09,039 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:09,039 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:39:09,039 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:09,040 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:39:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:39:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:39:09,172 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:39:09,185 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:39:09,191 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:39:09,192 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:39:09,193 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:39:09,209 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:39:09,209 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:39:09,209 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:39:09,210 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:39:09,210 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:39:09,210 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:39:09,210 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:39:09,210 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:39:09,210 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:39:09,213 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2018-01-21 05:39:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:39:09,213 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:39:09,213 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:39:09,214 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:39:09,214 INFO L82 PathProgramCache]: Analyzing trace with hash 186785, now seen corresponding path program 1 times [2018-01-21 05:39:09,214 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:39:09,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:09,215 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:39:09,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:09,215 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:39:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:39:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:39:09,220 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:39:09,221 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:39:09,222 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:39:09,222 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:39:09,222 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:39:09,223 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:39:09,223 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:39:09,223 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:39:09,223 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:39:09,223 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == create_topErr0EnsuresViolation======== [2018-01-21 05:39:09,223 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:39:09,224 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2018-01-21 05:39:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-21 05:39:09,225 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:39:09,225 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:39:09,225 INFO L371 AbstractCegarLoop]: === Iteration 1 === [create_topErr0EnsuresViolation]=== [2018-01-21 05:39:09,225 INFO L82 PathProgramCache]: Analyzing trace with hash 194822873, now seen corresponding path program 1 times [2018-01-21 05:39:09,226 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:39:09,226 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:09,226 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:39:09,226 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:09,227 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:39:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:39:09,232 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:39:09,241 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 05:39:09,241 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:39:09,242 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:39:09,242 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:39:09,242 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:39:09,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:39:09,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:39:09,243 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 2 states. [2018-01-21 05:39:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:39:09,255 INFO L93 Difference]: Finished difference Result 181 states and 211 transitions. [2018-01-21 05:39:09,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:39:09,255 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-21 05:39:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:39:09,257 INFO L225 Difference]: With dead ends: 181 [2018-01-21 05:39:09,257 INFO L226 Difference]: Without dead ends: 55 [2018-01-21 05:39:09,258 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 05:39:09,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-01-21 05:39:09,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-01-21 05:39:09,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-01-21 05:39:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2018-01-21 05:39:09,266 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 12 [2018-01-21 05:39:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:39:09,266 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2018-01-21 05:39:09,266 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:39:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2018-01-21 05:39:09,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-01-21 05:39:09,269 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:39:09,270 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:39:09,270 INFO L371 AbstractCegarLoop]: === Iteration 2 === [create_topErr0EnsuresViolation]=== [2018-01-21 05:39:09,270 INFO L82 PathProgramCache]: Analyzing trace with hash 797717174, now seen corresponding path program 1 times [2018-01-21 05:39:09,270 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:39:09,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:09,271 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:39:09,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:39:09,272 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:39:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:39:09,302 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:39:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-21 05:39:09,399 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 05:39:09,399 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 05:39:09,400 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 98 with the following transitions: [2018-01-21 05:39:09,403 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [5], [7], [8], [9], [14], [16], [18], [42], [43], [44], [48], [51], [54], [60], [62], [63], [64], [72], [73], [75], [76], [101], [102], [104], [108], [111], [114], [121], [122], [123], [124], [129], [134], [140], [141], [142], [143], [144], [148], [149], [152], [153], [154], [155], [156], [157], [158], [159], [160], [161], [162] [2018-01-21 05:39:09,469 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 05:39:09,469 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown