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/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag_1_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:29:13,299 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:29:13,301 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:29:13,313 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:29:13,314 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:29:13,315 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:29:13,316 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:29:13,317 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:29:13,320 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:29:13,321 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:29:13,321 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:29:13,322 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:29:13,323 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:29:13,324 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:29:13,325 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:29:13,327 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:29:13,329 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:29:13,331 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:29:13,332 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:29:13,334 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:29:13,336 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 20:29:13,341 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:29:13,341 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:29:13,342 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 20:29:13,352 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:29:13,352 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:29:13,353 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:29:13,353 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:29:13,353 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:29:13,353 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:29:13,354 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:29:13,354 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:29:13,354 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:29:13,355 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:29:13,355 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:29:13,355 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:29:13,355 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:29:13,356 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:29:13,356 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:29:13,356 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:29:13,356 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:29:13,356 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:29:13,356 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:29:13,357 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:29:13,357 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:29:13,357 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:29:13,357 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:29:13,357 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:29:13,358 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:29:13,358 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:29:13,358 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:29:13,358 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:29:13,358 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:29:13,359 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:29:13,359 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:29:13,359 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:29:13,359 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:29:13,359 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:29:13,359 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:29:13,360 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:29:13,361 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:29:13,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:29:13,408 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:29:13,412 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:29:13,414 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:29:13,414 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:29:13,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag_1_true-valid-memsafety.i [2018-01-24 20:29:13,578 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:29:13,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:29:13,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:29:13,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:29:13,589 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:29:13,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:29:13" (1/1) ... [2018-01-24 20:29:13,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ee3542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13, skipping insertion in model container [2018-01-24 20:29:13,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:29:13" (1/1) ... [2018-01-24 20:29:13,611 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:29:13,650 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:29:13,775 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:29:13,793 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:29:13,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13 WrapperNode [2018-01-24 20:29:13,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:29:13,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:29:13,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:29:13,803 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:29:13,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13" (1/1) ... [2018-01-24 20:29:13,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13" (1/1) ... [2018-01-24 20:29:13,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13" (1/1) ... [2018-01-24 20:29:13,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13" (1/1) ... [2018-01-24 20:29:13,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13" (1/1) ... [2018-01-24 20:29:13,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13" (1/1) ... [2018-01-24 20:29:13,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13" (1/1) ... [2018-01-24 20:29:13,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:29:13,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:29:13,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:29:13,842 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:29:13,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13" (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 [2018-01-24 20:29:13,890 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:29:13,890 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:29:13,890 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-24 20:29:13,890 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:29:13,890 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 20:29:13,890 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 20:29:13,891 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:29:13,891 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:29:13,891 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:29:13,891 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:29:13,891 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:29:13,891 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 20:29:13,892 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:29:13,892 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:29:13,892 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:29:13,892 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-24 20:29:13,892 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:29:13,892 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:29:13,892 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:29:14,269 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:29:14,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:29:14 BoogieIcfgContainer [2018-01-24 20:29:14,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:29:14,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:29:14,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:29:14,273 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:29:14,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:29:13" (1/3) ... [2018-01-24 20:29:14,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26149662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:29:14, skipping insertion in model container [2018-01-24 20:29:14,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:29:13" (2/3) ... [2018-01-24 20:29:14,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26149662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:29:14, skipping insertion in model container [2018-01-24 20:29:14,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:29:14" (3/3) ... [2018-01-24 20:29:14,276 INFO L105 eAbstractionObserver]: Analyzing ICFG list-ext_flag_1_true-valid-memsafety.i [2018-01-24 20:29:14,283 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:29:14,290 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 37 error locations. [2018-01-24 20:29:14,329 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:29:14,329 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:29:14,329 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:29:14,329 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:29:14,329 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:29:14,329 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:29:14,330 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:29:14,330 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:29:14,330 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:29:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2018-01-24 20:29:14,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-24 20:29:14,354 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:29:14,355 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:29:14,355 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:29:14,359 INFO L82 PathProgramCache]: Analyzing trace with hash 463338555, now seen corresponding path program 1 times [2018-01-24 20:29:14,361 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:29:14,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:14,401 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:29:14,402 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:14,402 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:29:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:29:14,445 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:29:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:29:14,480 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:29:14,480 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:29:14,481 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:29:14,483 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 20:29:14,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 20:29:14,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 20:29:14,495 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 2 states. [2018-01-24 20:29:14,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:29:14,616 INFO L93 Difference]: Finished difference Result 152 states and 171 transitions. [2018-01-24 20:29:14,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 20:29:14,617 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-24 20:29:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:29:14,624 INFO L225 Difference]: With dead ends: 152 [2018-01-24 20:29:14,625 INFO L226 Difference]: Without dead ends: 89 [2018-01-24 20:29:14,628 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 [2018-01-24 20:29:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-24 20:29:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-01-24 20:29:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-24 20:29:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2018-01-24 20:29:14,662 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 12 [2018-01-24 20:29:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:29:14,663 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2018-01-24 20:29:14,663 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 20:29:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2018-01-24 20:29:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 20:29:14,664 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:29:14,664 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:29:14,664 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:29:14,665 INFO L82 PathProgramCache]: Analyzing trace with hash -753673629, now seen corresponding path program 1 times [2018-01-24 20:29:14,665 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:29:14,666 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:14,666 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:29:14,666 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:14,667 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:29:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:29:14,688 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:29:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:29:14,745 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:29:14,745 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:29:14,745 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:29:14,747 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:29:14,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:29:14,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:29:14,748 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 5 states. [2018-01-24 20:29:15,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:29:15,012 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2018-01-24 20:29:15,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:29:15,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-24 20:29:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:29:15,014 INFO L225 Difference]: With dead ends: 115 [2018-01-24 20:29:15,014 INFO L226 Difference]: Without dead ends: 97 [2018-01-24 20:29:15,015 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:29:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-24 20:29:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2018-01-24 20:29:15,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-01-24 20:29:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2018-01-24 20:29:15,026 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 15 [2018-01-24 20:29:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:29:15,027 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2018-01-24 20:29:15,027 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:29:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2018-01-24 20:29:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 20:29:15,027 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:29:15,028 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:29:15,028 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:29:15,028 INFO L82 PathProgramCache]: Analyzing trace with hash -753673628, now seen corresponding path program 1 times [2018-01-24 20:29:15,028 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:29:15,029 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:15,030 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:29:15,030 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:15,030 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:29:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:29:15,048 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:29:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:29:15,135 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:29:15,135 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:29:15,135 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:29:15,135 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:29:15,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:29:15,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:29:15,136 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2018-01-24 20:29:15,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:29:15,338 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2018-01-24 20:29:15,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:29:15,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-24 20:29:15,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:29:15,339 INFO L225 Difference]: With dead ends: 136 [2018-01-24 20:29:15,340 INFO L226 Difference]: Without dead ends: 118 [2018-01-24 20:29:15,340 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:29:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-24 20:29:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2018-01-24 20:29:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-01-24 20:29:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2018-01-24 20:29:15,351 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 15 [2018-01-24 20:29:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:29:15,351 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2018-01-24 20:29:15,351 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:29:15,351 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2018-01-24 20:29:15,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 20:29:15,353 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:29:15,353 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] [2018-01-24 20:29:15,353 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:29:15,353 INFO L82 PathProgramCache]: Analyzing trace with hash 435110854, now seen corresponding path program 1 times [2018-01-24 20:29:15,353 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:29:15,354 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:15,354 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:29:15,354 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:15,355 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:29:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:29:15,383 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:29:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:29:15,519 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:29:15,519 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:29:15,519 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:29:15,519 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:29:15,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:29:15,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:29:15,520 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 6 states. [2018-01-24 20:29:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:29:15,763 INFO L93 Difference]: Finished difference Result 167 states and 183 transitions. [2018-01-24 20:29:15,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:29:15,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-01-24 20:29:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:29:15,800 INFO L225 Difference]: With dead ends: 167 [2018-01-24 20:29:15,801 INFO L226 Difference]: Without dead ends: 163 [2018-01-24 20:29:15,801 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:29:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-24 20:29:15,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 138. [2018-01-24 20:29:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-24 20:29:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2018-01-24 20:29:15,818 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 28 [2018-01-24 20:29:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:29:15,819 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2018-01-24 20:29:15,819 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:29:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2018-01-24 20:29:15,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 20:29:15,820 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:29:15,820 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] [2018-01-24 20:29:15,820 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:29:15,821 INFO L82 PathProgramCache]: Analyzing trace with hash 560475115, now seen corresponding path program 1 times [2018-01-24 20:29:15,821 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:29:15,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:15,822 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:29:15,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:15,822 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:29:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:29:15,840 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:29:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:29:15,938 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:29:15,939 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:29:15,939 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:29:15,939 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:29:15,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:29:15,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:29:15,940 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand 7 states. [2018-01-24 20:29:16,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:29:16,130 INFO L93 Difference]: Finished difference Result 195 states and 209 transitions. [2018-01-24 20:29:16,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:29:16,131 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-24 20:29:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:29:16,133 INFO L225 Difference]: With dead ends: 195 [2018-01-24 20:29:16,133 INFO L226 Difference]: Without dead ends: 146 [2018-01-24 20:29:16,134 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:29:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-24 20:29:16,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2018-01-24 20:29:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-01-24 20:29:16,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2018-01-24 20:29:16,146 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 28 [2018-01-24 20:29:16,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:29:16,147 INFO L432 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2018-01-24 20:29:16,147 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:29:16,147 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2018-01-24 20:29:16,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 20:29:16,148 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:29:16,148 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-24 20:29:16,149 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:29:16,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1958112025, now seen corresponding path program 1 times [2018-01-24 20:29:16,149 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:29:16,150 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:16,150 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:29:16,150 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:16,150 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:29:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:29:16,165 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:29:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:29:16,244 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:29:16,244 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:29:16,245 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:29:16,245 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:29:16,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:29:16,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:29:16,245 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand 7 states. [2018-01-24 20:29:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:29:16,483 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2018-01-24 20:29:16,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:29:16,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-24 20:29:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:29:16,484 INFO L225 Difference]: With dead ends: 122 [2018-01-24 20:29:16,484 INFO L226 Difference]: Without dead ends: 120 [2018-01-24 20:29:16,485 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-01-24 20:29:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-01-24 20:29:16,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2018-01-24 20:29:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-01-24 20:29:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2018-01-24 20:29:16,493 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 30 [2018-01-24 20:29:16,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:29:16,493 INFO L432 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2018-01-24 20:29:16,493 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:29:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2018-01-24 20:29:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 20:29:16,495 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:29:16,495 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-24 20:29:16,495 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:29:16,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1958112026, now seen corresponding path program 1 times [2018-01-24 20:29:16,495 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:29:16,496 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:16,496 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:29:16,497 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:16,497 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:29:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:29:16,513 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:29:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:29:16,628 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:29:16,628 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:29:16,628 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:29:16,629 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:29:16,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:29:16,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:29:16,629 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand 7 states. [2018-01-24 20:29:16,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:29:16,908 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2018-01-24 20:29:16,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:29:16,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-24 20:29:16,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:29:16,909 INFO L225 Difference]: With dead ends: 140 [2018-01-24 20:29:16,910 INFO L226 Difference]: Without dead ends: 132 [2018-01-24 20:29:16,910 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:29:16,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-01-24 20:29:16,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2018-01-24 20:29:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-24 20:29:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2018-01-24 20:29:16,920 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 30 [2018-01-24 20:29:16,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:29:16,920 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2018-01-24 20:29:16,920 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:29:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2018-01-24 20:29:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 20:29:16,921 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:29:16,921 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] [2018-01-24 20:29:16,921 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:29:16,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1625837310, now seen corresponding path program 1 times [2018-01-24 20:29:16,922 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:29:16,922 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:16,922 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:29:16,923 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:16,923 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:29:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:29:16,938 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:29:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:29:17,051 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:29:17,051 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:29:17,051 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:29:17,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:29:17,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:29:17,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:29:17,052 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 8 states. [2018-01-24 20:29:17,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:29:17,192 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2018-01-24 20:29:17,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:29:17,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-01-24 20:29:17,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:29:17,193 INFO L225 Difference]: With dead ends: 135 [2018-01-24 20:29:17,193 INFO L226 Difference]: Without dead ends: 105 [2018-01-24 20:29:17,194 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-01-24 20:29:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-01-24 20:29:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2018-01-24 20:29:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-01-24 20:29:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2018-01-24 20:29:17,199 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 31 [2018-01-24 20:29:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:29:17,200 INFO L432 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2018-01-24 20:29:17,200 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:29:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2018-01-24 20:29:17,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-24 20:29:17,201 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:29:17,201 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:29:17,201 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-24 20:29:17,201 INFO L82 PathProgramCache]: Analyzing trace with hash 77859536, now seen corresponding path program 1 times [2018-01-24 20:29:17,202 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:29:17,202 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:17,202 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:29:17,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:29:17,203 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:29:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:29:17,226 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:29:17,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:29:17,569 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:29:17,569 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:29:17,570 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 44 with the following transitions: [2018-01-24 20:29:17,572 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [8], [10], [14], [16], [19], [25], [27], [28], [31], [32], [37], [38], [47], [48], [54], [56], [59], [62], [66], [69], [72], [76], [78], [83], [118], [125], [129], [131], [136], [150], [153], [156], [161], [162], [170], [171], [172] [2018-01-24 20:29:17,637 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:29:17,637 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