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/forester-heap/sll-token_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 21:03:40,370 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 21:03:40,372 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 21:03:40,387 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 21:03:40,387 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 21:03:40,388 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 21:03:40,390 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 21:03:40,391 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 21:03:40,394 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 21:03:40,395 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 21:03:40,395 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 21:03:40,396 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 21:03:40,397 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 21:03:40,398 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 21:03:40,399 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 21:03:40,402 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 21:03:40,404 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 21:03:40,406 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 21:03:40,408 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 21:03:40,409 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 21:03:40,411 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 21:03:40,416 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 21:03:40,417 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 21:03:40,417 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 21:03:40,427 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 21:03:40,428 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 21:03:40,428 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 21:03:40,429 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 21:03:40,429 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 21:03:40,429 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 21:03:40,429 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 21:03:40,429 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 21:03:40,430 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 21:03:40,430 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 21:03:40,430 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 21:03:40,431 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 21:03:40,431 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 21:03:40,431 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 21:03:40,431 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 21:03:40,431 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 21:03:40,432 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 21:03:40,432 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 21:03:40,432 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 21:03:40,432 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 21:03:40,432 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 21:03:40,433 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 21:03:40,433 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 21:03:40,433 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 21:03:40,433 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 21:03:40,433 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 21:03:40,434 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 21:03:40,434 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 21:03:40,434 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 21:03:40,434 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 21:03:40,434 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 21:03:40,434 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 21:03:40,435 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 21:03:40,435 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 21:03:40,435 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 21:03:40,436 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 21:03:40,436 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 21:03:40,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 21:03:40,486 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 21:03:40,490 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 21:03:40,492 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 21:03:40,493 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 21:03:40,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token_true-unreach-call_true-valid-memsafety.i [2018-01-24 21:03:40,658 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 21:03:40,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 21:03:40,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 21:03:40,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 21:03:40,669 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 21:03:40,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:03:40" (1/1) ... [2018-01-24 21:03:40,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43dc00c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40, skipping insertion in model container [2018-01-24 21:03:40,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:03:40" (1/1) ... [2018-01-24 21:03:40,692 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:03:40,734 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:03:40,855 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:03:40,873 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:03:40,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40 WrapperNode [2018-01-24 21:03:40,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 21:03:40,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 21:03:40,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 21:03:40,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 21:03:40,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40" (1/1) ... [2018-01-24 21:03:40,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40" (1/1) ... [2018-01-24 21:03:40,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40" (1/1) ... [2018-01-24 21:03:40,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40" (1/1) ... [2018-01-24 21:03:40,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40" (1/1) ... [2018-01-24 21:03:40,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40" (1/1) ... [2018-01-24 21:03:40,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40" (1/1) ... [2018-01-24 21:03:40,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 21:03:40,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 21:03:40,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 21:03:40,923 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 21:03:40,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40" (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 21:03:40,970 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 21:03:40,970 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 21:03:40,970 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 21:03:40,970 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 21:03:40,970 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 21:03:40,970 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 21:03:40,971 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 21:03:40,971 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 21:03:40,971 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 21:03:40,971 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 21:03:40,971 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 21:03:40,971 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 21:03:40,971 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 21:03:40,971 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 21:03:40,971 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 21:03:40,972 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 21:03:40,972 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 21:03:41,433 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 21:03:41,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:03:41 BoogieIcfgContainer [2018-01-24 21:03:41,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 21:03:41,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 21:03:41,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 21:03:41,437 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 21:03:41,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 09:03:40" (1/3) ... [2018-01-24 21:03:41,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cb3c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 09:03:41, skipping insertion in model container [2018-01-24 21:03:41,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:03:40" (2/3) ... [2018-01-24 21:03:41,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cb3c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 09:03:41, skipping insertion in model container [2018-01-24 21:03:41,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:03:41" (3/3) ... [2018-01-24 21:03:41,441 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-token_true-unreach-call_true-valid-memsafety.i [2018-01-24 21:03:41,448 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 21:03:41,454 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 45 error locations. [2018-01-24 21:03:41,506 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 21:03:41,506 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 21:03:41,506 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 21:03:41,506 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 21:03:41,506 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 21:03:41,507 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 21:03:41,507 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 21:03:41,507 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 21:03:41,508 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 21:03:41,533 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2018-01-24 21:03:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 21:03:41,540 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:41,542 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:41,542 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:41,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1807775718, now seen corresponding path program 1 times [2018-01-24 21:03:41,550 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:41,609 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:41,610 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:41,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:41,610 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:41,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:41,742 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 21:03:41,745 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:41,745 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:03:41,746 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:41,749 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:03:41,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:03:41,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:03:41,768 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2018-01-24 21:03:42,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:42,049 INFO L93 Difference]: Finished difference Result 238 states and 289 transitions. [2018-01-24 21:03:42,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 21:03:42,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 21:03:42,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:42,062 INFO L225 Difference]: With dead ends: 238 [2018-01-24 21:03:42,062 INFO L226 Difference]: Without dead ends: 133 [2018-01-24 21:03:42,066 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:42,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-01-24 21:03:42,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 109. [2018-01-24 21:03:42,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-24 21:03:42,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-01-24 21:03:42,107 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 8 [2018-01-24 21:03:42,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:42,108 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-01-24 21:03:42,108 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:03:42,108 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-01-24 21:03:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 21:03:42,109 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:42,109 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:42,109 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:42,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1807775717, now seen corresponding path program 1 times [2018-01-24 21:03:42,109 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:42,110 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,110 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:42,111 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,111 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:42,126 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:42,196 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 21:03:42,197 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:42,197 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:03:42,197 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:42,198 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:03:42,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:03:42,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:03:42,199 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 4 states. [2018-01-24 21:03:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:42,343 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2018-01-24 21:03:42,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 21:03:42,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 21:03:42,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:42,345 INFO L225 Difference]: With dead ends: 133 [2018-01-24 21:03:42,345 INFO L226 Difference]: Without dead ends: 131 [2018-01-24 21:03:42,347 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-24 21:03:42,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 107. [2018-01-24 21:03:42,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-01-24 21:03:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2018-01-24 21:03:42,360 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 8 [2018-01-24 21:03:42,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:42,360 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2018-01-24 21:03:42,360 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:03:42,360 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2018-01-24 21:03:42,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 21:03:42,361 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:42,361 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:42,361 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:42,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1410075710, now seen corresponding path program 1 times [2018-01-24 21:03:42,362 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:42,363 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,363 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:42,364 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,364 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:42,383 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:42,458 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 21:03:42,458 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:42,458 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:03:42,458 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:42,459 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:03:42,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:03:42,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:03:42,460 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 4 states. [2018-01-24 21:03:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:42,655 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2018-01-24 21:03:42,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:03:42,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-24 21:03:42,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:42,656 INFO L225 Difference]: With dead ends: 126 [2018-01-24 21:03:42,656 INFO L226 Difference]: Without dead ends: 111 [2018-01-24 21:03:42,657 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-01-24 21:03:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2018-01-24 21:03:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-24 21:03:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2018-01-24 21:03:42,667 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 14 [2018-01-24 21:03:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:42,667 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2018-01-24 21:03:42,668 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:03:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2018-01-24 21:03:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-24 21:03:42,668 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:42,669 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:42,669 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:42,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1410075709, now seen corresponding path program 1 times [2018-01-24 21:03:42,669 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:42,670 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,670 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:42,670 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,671 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:42,688 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:42,748 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 21:03:42,789 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:42,790 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:03:42,790 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:42,790 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:03:42,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:03:42,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:42,790 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 5 states. [2018-01-24 21:03:42,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:42,975 INFO L93 Difference]: Finished difference Result 182 states and 186 transitions. [2018-01-24 21:03:42,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:03:42,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-24 21:03:42,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:42,977 INFO L225 Difference]: With dead ends: 182 [2018-01-24 21:03:42,977 INFO L226 Difference]: Without dead ends: 166 [2018-01-24 21:03:42,978 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 21:03:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-24 21:03:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 131. [2018-01-24 21:03:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-24 21:03:42,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2018-01-24 21:03:42,992 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 14 [2018-01-24 21:03:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:42,992 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2018-01-24 21:03:42,992 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:03:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2018-01-24 21:03:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 21:03:42,993 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:42,993 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:42,994 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:42,994 INFO L82 PathProgramCache]: Analyzing trace with hash -444857017, now seen corresponding path program 1 times [2018-01-24 21:03:42,994 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:42,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,996 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:42,996 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:42,996 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:43,018 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:43,095 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 21:03:43,096 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:43,096 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:03:43,096 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:43,096 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:03:43,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:03:43,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:43,097 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 5 states. [2018-01-24 21:03:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:43,293 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2018-01-24 21:03:43,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:03:43,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 21:03:43,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:43,295 INFO L225 Difference]: With dead ends: 131 [2018-01-24 21:03:43,295 INFO L226 Difference]: Without dead ends: 130 [2018-01-24 21:03:43,296 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 21:03:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-24 21:03:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-01-24 21:03:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-24 21:03:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2018-01-24 21:03:43,308 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 18 [2018-01-24 21:03:43,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:43,309 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2018-01-24 21:03:43,309 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:03:43,309 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2018-01-24 21:03:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 21:03:43,310 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:43,310 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:43,310 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:43,310 INFO L82 PathProgramCache]: Analyzing trace with hash -444857018, now seen corresponding path program 1 times [2018-01-24 21:03:43,311 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:43,311 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:43,312 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:43,312 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:43,312 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:43,329 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:43,404 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 21:03:43,404 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:43,404 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 21:03:43,404 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:43,405 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:03:43,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:03:43,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:03:43,405 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand 5 states. [2018-01-24 21:03:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:43,588 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2018-01-24 21:03:43,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:03:43,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 21:03:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:43,589 INFO L225 Difference]: With dead ends: 132 [2018-01-24 21:03:43,589 INFO L226 Difference]: Without dead ends: 131 [2018-01-24 21:03:43,590 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 21:03:43,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-24 21:03:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2018-01-24 21:03:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-01-24 21:03:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2018-01-24 21:03:43,600 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 18 [2018-01-24 21:03:43,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:43,600 INFO L432 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2018-01-24 21:03:43,600 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:03:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2018-01-24 21:03:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 21:03:43,601 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:43,601 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:43,601 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:43,602 INFO L82 PathProgramCache]: Analyzing trace with hash -418196060, now seen corresponding path program 1 times [2018-01-24 21:03:43,602 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:43,603 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:43,603 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:43,603 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:43,603 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:43,613 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:43,658 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 21:03:43,658 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:43,658 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:03:43,658 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:43,658 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 21:03:43,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 21:03:43,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:03:43,659 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand 6 states. [2018-01-24 21:03:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:43,882 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2018-01-24 21:03:43,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 21:03:43,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-24 21:03:43,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:43,883 INFO L225 Difference]: With dead ends: 189 [2018-01-24 21:03:43,884 INFO L226 Difference]: Without dead ends: 188 [2018-01-24 21:03:43,884 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-24 21:03:43,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-01-24 21:03:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 128. [2018-01-24 21:03:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-01-24 21:03:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2018-01-24 21:03:43,894 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 18 [2018-01-24 21:03:43,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:43,895 INFO L432 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2018-01-24 21:03:43,895 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 21:03:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2018-01-24 21:03:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 21:03:43,895 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:43,896 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:43,896 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:43,896 INFO L82 PathProgramCache]: Analyzing trace with hash -418196059, now seen corresponding path program 1 times [2018-01-24 21:03:43,896 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:43,897 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:43,897 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:43,897 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:43,897 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:43,909 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:43,981 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 21:03:43,981 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:43,981 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:03:43,981 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:43,982 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 21:03:43,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 21:03:43,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:03:43,982 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 6 states. [2018-01-24 21:03:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:44,220 INFO L93 Difference]: Finished difference Result 216 states and 230 transitions. [2018-01-24 21:03:44,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 21:03:44,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-24 21:03:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:44,222 INFO L225 Difference]: With dead ends: 216 [2018-01-24 21:03:44,222 INFO L226 Difference]: Without dead ends: 210 [2018-01-24 21:03:44,222 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-24 21:03:44,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-24 21:03:44,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 112. [2018-01-24 21:03:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-01-24 21:03:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 119 transitions. [2018-01-24 21:03:44,229 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 119 transitions. Word has length 18 [2018-01-24 21:03:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:44,229 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 119 transitions. [2018-01-24 21:03:44,229 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 21:03:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 119 transitions. [2018-01-24 21:03:44,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 21:03:44,230 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:44,230 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:44,230 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:44,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1163379848, now seen corresponding path program 1 times [2018-01-24 21:03:44,230 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:44,231 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:44,231 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:44,231 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:44,231 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:44,255 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:44,587 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 21:03:44,587 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:44,588 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 21:03:44,588 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:44,588 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 21:03:44,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 21:03:44,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-01-24 21:03:44,589 INFO L87 Difference]: Start difference. First operand 112 states and 119 transitions. Second operand 11 states. [2018-01-24 21:03:45,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:45,160 INFO L93 Difference]: Finished difference Result 197 states and 204 transitions. [2018-01-24 21:03:45,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-24 21:03:45,161 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2018-01-24 21:03:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:45,162 INFO L225 Difference]: With dead ends: 197 [2018-01-24 21:03:45,162 INFO L226 Difference]: Without dead ends: 196 [2018-01-24 21:03:45,163 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2018-01-24 21:03:45,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-01-24 21:03:45,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 135. [2018-01-24 21:03:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-24 21:03:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2018-01-24 21:03:45,172 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 33 [2018-01-24 21:03:45,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:45,172 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2018-01-24 21:03:45,172 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 21:03:45,172 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2018-01-24 21:03:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 21:03:45,173 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:45,173 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:45,173 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:45,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1163379847, now seen corresponding path program 1 times [2018-01-24 21:03:45,174 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:45,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:45,175 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:45,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:45,175 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:45,193 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:45,357 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 21:03:45,357 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:03:45,357 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 21:03:45,357 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:03:45,357 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 21:03:45,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 21:03:45,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-01-24 21:03:45,358 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand 11 states. [2018-01-24 21:03:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:03:45,945 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2018-01-24 21:03:45,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 21:03:45,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2018-01-24 21:03:45,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:03:45,947 INFO L225 Difference]: With dead ends: 227 [2018-01-24 21:03:45,947 INFO L226 Difference]: Without dead ends: 226 [2018-01-24 21:03:45,947 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-01-24 21:03:45,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-24 21:03:45,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 135. [2018-01-24 21:03:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-24 21:03:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2018-01-24 21:03:45,965 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 33 [2018-01-24 21:03:45,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:03:45,966 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2018-01-24 21:03:45,966 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 21:03:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2018-01-24 21:03:45,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 21:03:45,968 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:03:45,968 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:03:45,968 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:03:45,968 INFO L82 PathProgramCache]: Analyzing trace with hash 713889595, now seen corresponding path program 1 times [2018-01-24 21:03:45,969 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:03:45,970 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:45,970 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:03:45,970 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:03:45,970 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:03:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:03:45,985 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:03:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:03:46,140 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 21:03:46,140 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 21:03:46,141 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2018-01-24 21:03:46,142 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [14], [17], [52], [55], [56], [59], [62], [65], [69], [74], [78], [86], [88], [89], [95], [99], [100], [107], [111], [117], [120], [226], [227], [231], [232], [233] [2018-01-24 21:03:46,195 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 21:03:46,195 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