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_precise.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:15:25,356 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:15:25,358 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:15:25,370 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:15:25,370 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:15:25,371 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:15:25,372 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:15:25,373 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:15:25,375 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:15:25,376 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:15:25,377 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:15:25,377 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:15:25,378 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:15:25,379 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:15:25,380 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:15:25,381 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:15:25,383 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:15:25,385 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:15:25,386 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:15:25,387 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:15:25,390 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-25 00:15:25,395 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:15:25,395 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:15:25,396 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_precise.epf [2018-01-25 00:15:25,406 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:15:25,406 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:15:25,407 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:15:25,407 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:15:25,407 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:15:25,408 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:15:25,408 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:15:25,408 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:15:25,409 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:15:25,409 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:15:25,409 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:15:25,409 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:15:25,409 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:15:25,410 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:15:25,410 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:15:25,410 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:15:25,410 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:15:25,410 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:15:25,411 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:15:25,411 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:15:25,411 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:15:25,411 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:15:25,411 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:15:25,412 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:15:25,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:15:25,412 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:15:25,412 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:15:25,412 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:15:25,413 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:15:25,413 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:15:25,413 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:15:25,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:15:25,413 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:15:25,414 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:15:25,414 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:15:25,415 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:15:25,448 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:15:25,457 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:15:25,461 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:15:25,462 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:15:25,462 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:15:25,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-25 00:15:25,632 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:15:25,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:15:25,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:15:25,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:15:25,647 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:15:25,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:15:25" (1/1) ... [2018-01-25 00:15:25,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd00cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25, skipping insertion in model container [2018-01-25 00:15:25,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:15:25" (1/1) ... [2018-01-25 00:15:25,670 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:15:25,713 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:15:25,831 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:15:25,848 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:15:25,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25 WrapperNode [2018-01-25 00:15:25,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:15:25,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:15:25,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:15:25,856 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:15:25,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25" (1/1) ... [2018-01-25 00:15:25,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25" (1/1) ... [2018-01-25 00:15:25,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25" (1/1) ... [2018-01-25 00:15:25,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25" (1/1) ... [2018-01-25 00:15:25,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25" (1/1) ... [2018-01-25 00:15:25,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25" (1/1) ... [2018-01-25 00:15:25,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25" (1/1) ... [2018-01-25 00:15:25,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:15:25,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:15:25,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:15:25,897 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:15:25,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25" (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 [2018-01-25 00:15:25,944 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:15:25,944 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:15:25,944 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:15:25,944 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:15:25,944 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:15:25,944 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:15:25,945 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:15:25,945 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:15:25,945 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:15:25,945 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:15:25,945 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:15:25,945 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:15:25,945 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:15:25,945 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:15:25,945 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:15:25,946 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:15:25,946 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:15:26,397 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:15:26,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:15:26 BoogieIcfgContainer [2018-01-25 00:15:26,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:15:26,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:15:26,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:15:26,402 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:15:26,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:15:25" (1/3) ... [2018-01-25 00:15:26,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1479e0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:15:26, skipping insertion in model container [2018-01-25 00:15:26,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:15:25" (2/3) ... [2018-01-25 00:15:26,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1479e0e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:15:26, skipping insertion in model container [2018-01-25 00:15:26,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:15:26" (3/3) ... [2018-01-25 00:15:26,408 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-25 00:15:26,418 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:15:26,426 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 43 error locations. [2018-01-25 00:15:26,480 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:15:26,481 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:15:26,481 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:15:26,481 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:15:26,481 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:15:26,481 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:15:26,481 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:15:26,482 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:15:26,482 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:15:26,501 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2018-01-25 00:15:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:15:26,507 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:26,507 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:15:26,508 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:26,511 INFO L82 PathProgramCache]: Analyzing trace with hash 805618339, now seen corresponding path program 1 times [2018-01-25 00:15:26,513 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:26,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:26,558 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:26,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:26,558 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:26,606 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:26,683 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:15:26,683 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:15:26,684 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:15:26,687 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:15:26,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:15:26,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:15:26,701 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 4 states. [2018-01-25 00:15:27,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:15:27,079 INFO L93 Difference]: Finished difference Result 232 states and 270 transitions. [2018-01-25 00:15:27,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:15:27,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:15:27,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:15:27,090 INFO L225 Difference]: With dead ends: 232 [2018-01-25 00:15:27,090 INFO L226 Difference]: Without dead ends: 143 [2018-01-25 00:15:27,093 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 [2018-01-25 00:15:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-25 00:15:27,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 101. [2018-01-25 00:15:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-25 00:15:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2018-01-25 00:15:27,134 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 8 [2018-01-25 00:15:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:15:27,134 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2018-01-25 00:15:27,134 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:15:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2018-01-25 00:15:27,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:15:27,135 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:27,135 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:15:27,135 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:27,135 INFO L82 PathProgramCache]: Analyzing trace with hash 805618340, now seen corresponding path program 1 times [2018-01-25 00:15:27,135 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:27,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:27,137 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:27,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:27,137 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:27,154 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:27,227 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:15:27,227 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:15:27,228 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:15:27,229 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:15:27,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:15:27,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:15:27,230 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 4 states. [2018-01-25 00:15:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:15:27,486 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2018-01-25 00:15:27,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:15:27,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:15:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:15:27,488 INFO L225 Difference]: With dead ends: 131 [2018-01-25 00:15:27,489 INFO L226 Difference]: Without dead ends: 129 [2018-01-25 00:15:27,490 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 [2018-01-25 00:15:27,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-25 00:15:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 99. [2018-01-25 00:15:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-25 00:15:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2018-01-25 00:15:27,501 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 8 [2018-01-25 00:15:27,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:15:27,502 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2018-01-25 00:15:27,502 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:15:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2018-01-25 00:15:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 00:15:27,503 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:27,503 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:15:27,503 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:27,503 INFO L82 PathProgramCache]: Analyzing trace with hash -86961810, now seen corresponding path program 1 times [2018-01-25 00:15:27,504 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:27,505 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:27,505 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:27,505 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:27,505 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:27,529 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:27,611 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:15:27,611 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:15:27,611 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:15:27,612 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:15:27,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:15:27,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:15:27,612 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand 4 states. [2018-01-25 00:15:27,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:15:27,764 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2018-01-25 00:15:27,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:15:27,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-25 00:15:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:15:27,766 INFO L225 Difference]: With dead ends: 119 [2018-01-25 00:15:27,766 INFO L226 Difference]: Without dead ends: 103 [2018-01-25 00:15:27,767 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:15:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-01-25 00:15:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 96. [2018-01-25 00:15:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-25 00:15:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2018-01-25 00:15:27,778 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 15 [2018-01-25 00:15:27,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:15:27,779 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2018-01-25 00:15:27,779 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:15:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2018-01-25 00:15:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 00:15:27,780 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:27,780 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:15:27,780 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash -86961809, now seen corresponding path program 1 times [2018-01-25 00:15:27,781 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:27,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:27,782 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:27,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:27,782 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:27,801 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:27,924 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:15:27,924 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:15:27,924 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:15:27,925 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:15:27,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:15:27,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:15:27,925 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 7 states. [2018-01-25 00:15:28,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:15:28,300 INFO L93 Difference]: Finished difference Result 173 states and 190 transitions. [2018-01-25 00:15:28,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:15:28,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-01-25 00:15:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:15:28,301 INFO L225 Difference]: With dead ends: 173 [2018-01-25 00:15:28,301 INFO L226 Difference]: Without dead ends: 160 [2018-01-25 00:15:28,302 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:15:28,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-25 00:15:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 136. [2018-01-25 00:15:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-01-25 00:15:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 160 transitions. [2018-01-25 00:15:28,316 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 160 transitions. Word has length 15 [2018-01-25 00:15:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:15:28,317 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 160 transitions. [2018-01-25 00:15:28,317 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:15:28,317 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 160 transitions. [2018-01-25 00:15:28,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:15:28,318 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:28,318 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:15:28,319 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:28,320 INFO L82 PathProgramCache]: Analyzing trace with hash -854983682, now seen corresponding path program 1 times [2018-01-25 00:15:28,320 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:28,321 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:28,321 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:28,321 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:28,321 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:28,334 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:28,371 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:15:28,371 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:15:28,371 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:15:28,372 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:15:28,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:15:28,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:15:28,372 INFO L87 Difference]: Start difference. First operand 136 states and 160 transitions. Second operand 4 states. [2018-01-25 00:15:28,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:15:28,504 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2018-01-25 00:15:28,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:15:28,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-25 00:15:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:15:28,505 INFO L225 Difference]: With dead ends: 152 [2018-01-25 00:15:28,505 INFO L226 Difference]: Without dead ends: 151 [2018-01-25 00:15:28,506 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 [2018-01-25 00:15:28,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-25 00:15:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 135. [2018-01-25 00:15:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-25 00:15:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 159 transitions. [2018-01-25 00:15:28,516 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 159 transitions. Word has length 18 [2018-01-25 00:15:28,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:15:28,516 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 159 transitions. [2018-01-25 00:15:28,516 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:15:28,516 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 159 transitions. [2018-01-25 00:15:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:15:28,517 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:28,517 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:15:28,517 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:28,517 INFO L82 PathProgramCache]: Analyzing trace with hash -854983681, now seen corresponding path program 1 times [2018-01-25 00:15:28,517 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:28,518 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:28,518 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:28,518 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:28,518 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:28,533 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:28,581 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:15:28,582 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:15:28,582 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:15:28,582 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:15:28,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:15:28,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:15:28,582 INFO L87 Difference]: Start difference. First operand 135 states and 159 transitions. Second operand 4 states. [2018-01-25 00:15:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:15:28,697 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2018-01-25 00:15:28,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:15:28,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-25 00:15:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:15:28,698 INFO L225 Difference]: With dead ends: 154 [2018-01-25 00:15:28,698 INFO L226 Difference]: Without dead ends: 152 [2018-01-25 00:15:28,698 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 [2018-01-25 00:15:28,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-25 00:15:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 133. [2018-01-25 00:15:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-25 00:15:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2018-01-25 00:15:28,709 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 18 [2018-01-25 00:15:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:15:28,709 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2018-01-25 00:15:28,709 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:15:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2018-01-25 00:15:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:15:28,710 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:28,710 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:15:28,710 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:28,711 INFO L82 PathProgramCache]: Analyzing trace with hash -814008083, now seen corresponding path program 1 times [2018-01-25 00:15:28,711 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:28,712 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:28,712 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:28,712 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:28,712 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:28,723 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:28,764 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:15:28,764 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:15:28,764 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:15:28,764 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:15:28,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:15:28,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:15:28,765 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 6 states. [2018-01-25 00:15:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:15:29,054 INFO L93 Difference]: Finished difference Result 229 states and 272 transitions. [2018-01-25 00:15:29,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:15:29,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 00:15:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:15:29,057 INFO L225 Difference]: With dead ends: 229 [2018-01-25 00:15:29,057 INFO L226 Difference]: Without dead ends: 228 [2018-01-25 00:15:29,058 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 [2018-01-25 00:15:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-01-25 00:15:29,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 132. [2018-01-25 00:15:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-01-25 00:15:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2018-01-25 00:15:29,068 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 18 [2018-01-25 00:15:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:15:29,069 INFO L432 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2018-01-25 00:15:29,069 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:15:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2018-01-25 00:15:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:15:29,069 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:29,070 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:15:29,070 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash -814008082, now seen corresponding path program 1 times [2018-01-25 00:15:29,070 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:29,071 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:29,071 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:29,071 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:29,071 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:29,081 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:29,171 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:15:29,171 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:15:29,171 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:15:29,171 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:15:29,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:15:29,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:15:29,172 INFO L87 Difference]: Start difference. First operand 132 states and 156 transitions. Second operand 6 states. [2018-01-25 00:15:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:15:29,470 INFO L93 Difference]: Finished difference Result 236 states and 282 transitions. [2018-01-25 00:15:29,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 00:15:29,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 00:15:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:15:29,471 INFO L225 Difference]: With dead ends: 236 [2018-01-25 00:15:29,471 INFO L226 Difference]: Without dead ends: 232 [2018-01-25 00:15:29,472 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-25 00:15:29,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-25 00:15:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 122. [2018-01-25 00:15:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-25 00:15:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2018-01-25 00:15:29,480 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 18 [2018-01-25 00:15:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:15:29,481 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2018-01-25 00:15:29,481 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:15:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2018-01-25 00:15:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 00:15:29,482 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:29,482 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] [2018-01-25 00:15:29,482 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:29,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1060549093, now seen corresponding path program 1 times [2018-01-25 00:15:29,482 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:29,483 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:29,483 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:29,483 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:29,483 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:29,495 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:29,577 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:15:29,590 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:15:29,590 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:15:29,591 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:15:29,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:15:29,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:15:29,591 INFO L87 Difference]: Start difference. First operand 122 states and 145 transitions. Second operand 5 states. [2018-01-25 00:15:29,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:15:29,712 INFO L93 Difference]: Finished difference Result 210 states and 243 transitions. [2018-01-25 00:15:29,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:15:29,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-25 00:15:29,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:15:29,713 INFO L225 Difference]: With dead ends: 210 [2018-01-25 00:15:29,713 INFO L226 Difference]: Without dead ends: 139 [2018-01-25 00:15:29,714 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:15:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-25 00:15:29,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 130. [2018-01-25 00:15:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-25 00:15:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2018-01-25 00:15:29,722 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 23 [2018-01-25 00:15:29,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:15:29,722 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2018-01-25 00:15:29,723 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:15:29,723 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2018-01-25 00:15:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 00:15:29,724 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:29,724 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] [2018-01-25 00:15:29,724 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:29,724 INFO L82 PathProgramCache]: Analyzing trace with hash -212541728, now seen corresponding path program 1 times [2018-01-25 00:15:29,724 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:29,725 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:29,725 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:29,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:29,726 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:29,738 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:29,791 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:15:29,791 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:15:29,791 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:15:29,792 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:15:29,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:15:29,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:15:29,792 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand 5 states. [2018-01-25 00:15:29,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:15:29,998 INFO L93 Difference]: Finished difference Result 167 states and 182 transitions. [2018-01-25 00:15:29,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:15:29,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-25 00:15:29,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:15:29,999 INFO L225 Difference]: With dead ends: 167 [2018-01-25 00:15:29,999 INFO L226 Difference]: Without dead ends: 162 [2018-01-25 00:15:30,000 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:15:30,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-25 00:15:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 108. [2018-01-25 00:15:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-25 00:15:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2018-01-25 00:15:30,011 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 23 [2018-01-25 00:15:30,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:15:30,011 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2018-01-25 00:15:30,011 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:15:30,012 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2018-01-25 00:15:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 00:15:30,013 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:15:30,013 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] [2018-01-25 00:15:30,013 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, mainErr42EnsuresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:15:30,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1439904849, now seen corresponding path program 1 times [2018-01-25 00:15:30,013 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:15:30,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:30,015 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:15:30,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:15:30,015 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:15:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:15:30,029 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:15:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:15:30,123 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:15:30,124 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:15:30,124 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-01-25 00:15:30,126 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [14], [17], [37], [40], [41], [42], [43], [46], [49], [92], [96], [98], [99], [105], [106], [109], [185], [186], [190], [191], [192] [2018-01-25 00:15:30,169 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:15:30,170 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