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/dll-token_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:22:09,464 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:22:09,466 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:22:09,479 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:22:09,479 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:22:09,480 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:22:09,481 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:22:09,483 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:22:09,485 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:22:09,486 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:22:09,487 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:22:09,487 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:22:09,487 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:22:09,488 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:22:09,489 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:22:09,491 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:22:09,493 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:22:09,495 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:22:09,496 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:22:09,498 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:22:09,500 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-25 00:22:09,505 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:22:09,506 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:22:09,506 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 00:22:09,515 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:22:09,516 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:22:09,517 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:22:09,517 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:22:09,517 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:22:09,517 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:22:09,517 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:22:09,518 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:22:09,518 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:22:09,518 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:22:09,518 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:22:09,519 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:22:09,519 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:22:09,519 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:22:09,519 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:22:09,519 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:22:09,520 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:22:09,520 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:22:09,520 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:22:09,520 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:22:09,520 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:22:09,520 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:22:09,521 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:22:09,521 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:22:09,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:22:09,521 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:22:09,521 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:22:09,521 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:22:09,522 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:22:09,522 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:22:09,522 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:22:09,522 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:22:09,522 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:22:09,522 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:22:09,523 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:22:09,523 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:22:09,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:22:09,565 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:22:09,569 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:22:09,570 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:22:09,571 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:22:09,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:22:09,732 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:22:09,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:22:09,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:22:09,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:22:09,744 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:22:09,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:22:09" (1/1) ... [2018-01-25 00:22:09,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e82129b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09, skipping insertion in model container [2018-01-25 00:22:09,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:22:09" (1/1) ... [2018-01-25 00:22:09,761 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:22:09,802 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:22:09,924 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:22:09,947 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:22:09,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09 WrapperNode [2018-01-25 00:22:09,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:22:09,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:22:09,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:22:09,958 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:22:09,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09" (1/1) ... [2018-01-25 00:22:09,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09" (1/1) ... [2018-01-25 00:22:09,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09" (1/1) ... [2018-01-25 00:22:09,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09" (1/1) ... [2018-01-25 00:22:09,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09" (1/1) ... [2018-01-25 00:22:09,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09" (1/1) ... [2018-01-25 00:22:09,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09" (1/1) ... [2018-01-25 00:22:10,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:22:10,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:22:10,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:22:10,000 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:22:10,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09" (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 00:22:10,047 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:22:10,047 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:22:10,047 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:22:10,047 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:22:10,047 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:22:10,047 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:22:10,047 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:22:10,048 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:22:10,048 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:22:10,048 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:22:10,048 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:22:10,048 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:22:10,048 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:22:10,048 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:22:10,048 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:22:10,048 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:22:10,048 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:22:10,530 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:22:10,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:22:10 BoogieIcfgContainer [2018-01-25 00:22:10,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:22:10,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:22:10,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:22:10,534 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:22:10,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:22:09" (1/3) ... [2018-01-25 00:22:10,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f41b588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:22:10, skipping insertion in model container [2018-01-25 00:22:10,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:22:09" (2/3) ... [2018-01-25 00:22:10,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f41b588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:22:10, skipping insertion in model container [2018-01-25 00:22:10,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:22:10" (3/3) ... [2018-01-25 00:22:10,539 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-token_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:22:10,548 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:22:10,556 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 55 error locations. [2018-01-25 00:22:10,606 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:22:10,607 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:22:10,607 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:22:10,607 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:22:10,607 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:22:10,607 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:22:10,608 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:22:10,608 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:22:10,609 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:22:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2018-01-25 00:22:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:22:10,640 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:10,641 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:22:10,641 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:10,647 INFO L82 PathProgramCache]: Analyzing trace with hash 460791465, now seen corresponding path program 1 times [2018-01-25 00:22:10,649 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:10,710 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:10,711 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:10,711 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:10,711 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:10,765 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:10,846 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 00:22:10,849 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:10,849 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:22:10,849 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:10,852 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:22:10,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:22:10,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:22:10,870 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 4 states. [2018-01-25 00:22:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:11,156 INFO L93 Difference]: Finished difference Result 269 states and 320 transitions. [2018-01-25 00:22:11,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:22:11,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:22:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:11,166 INFO L225 Difference]: With dead ends: 269 [2018-01-25 00:22:11,166 INFO L226 Difference]: Without dead ends: 149 [2018-01-25 00:22:11,169 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 00:22:11,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-25 00:22:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 125. [2018-01-25 00:22:11,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-25 00:22:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-01-25 00:22:11,207 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 8 [2018-01-25 00:22:11,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:11,207 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-01-25 00:22:11,207 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:22:11,207 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-01-25 00:22:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:22:11,207 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:11,208 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:22:11,208 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:11,208 INFO L82 PathProgramCache]: Analyzing trace with hash 460791466, now seen corresponding path program 1 times [2018-01-25 00:22:11,208 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:11,209 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:11,209 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:11,209 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:11,209 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:11,226 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:11,293 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 00:22:11,294 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:11,294 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:22:11,294 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:11,295 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:22:11,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:22:11,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:22:11,296 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 4 states. [2018-01-25 00:22:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:11,483 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2018-01-25 00:22:11,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:22:11,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:22:11,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:11,485 INFO L225 Difference]: With dead ends: 149 [2018-01-25 00:22:11,486 INFO L226 Difference]: Without dead ends: 146 [2018-01-25 00:22:11,487 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 00:22:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-25 00:22:11,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 122. [2018-01-25 00:22:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-25 00:22:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2018-01-25 00:22:11,499 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 8 [2018-01-25 00:22:11,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:11,499 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2018-01-25 00:22:11,500 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:22:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2018-01-25 00:22:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 00:22:11,500 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:11,500 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:22:11,501 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:11,501 INFO L82 PathProgramCache]: Analyzing trace with hash 108566574, now seen corresponding path program 1 times [2018-01-25 00:22:11,501 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:11,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:11,502 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:11,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:11,503 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:11,523 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:11,603 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 00:22:11,603 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:11,603 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:22:11,604 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:11,604 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:22:11,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:22:11,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:22:11,604 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 5 states. [2018-01-25 00:22:11,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:11,915 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-01-25 00:22:11,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:22:11,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-25 00:22:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:11,917 INFO L225 Difference]: With dead ends: 241 [2018-01-25 00:22:11,918 INFO L226 Difference]: Without dead ends: 223 [2018-01-25 00:22:11,918 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 [2018-01-25 00:22:11,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-01-25 00:22:11,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 165. [2018-01-25 00:22:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-25 00:22:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 194 transitions. [2018-01-25 00:22:11,935 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 194 transitions. Word has length 15 [2018-01-25 00:22:11,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:11,935 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 194 transitions. [2018-01-25 00:22:11,935 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:22:11,936 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 194 transitions. [2018-01-25 00:22:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 00:22:11,936 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:11,968 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:22:11,969 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:11,969 INFO L82 PathProgramCache]: Analyzing trace with hash 108566573, now seen corresponding path program 1 times [2018-01-25 00:22:11,969 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:11,970 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:11,970 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:11,970 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:11,971 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:11,986 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:12,032 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 00:22:12,032 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:12,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:22:12,033 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:12,033 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:22:12,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:22:12,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:22:12,034 INFO L87 Difference]: Start difference. First operand 165 states and 194 transitions. Second operand 4 states. [2018-01-25 00:22:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:12,180 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2018-01-25 00:22:12,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:22:12,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-25 00:22:12,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:12,182 INFO L225 Difference]: With dead ends: 169 [2018-01-25 00:22:12,182 INFO L226 Difference]: Without dead ends: 152 [2018-01-25 00:22:12,182 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 [2018-01-25 00:22:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-25 00:22:12,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2018-01-25 00:22:12,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 00:22:12,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2018-01-25 00:22:12,196 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 15 [2018-01-25 00:22:12,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:12,196 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2018-01-25 00:22:12,196 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:22:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2018-01-25 00:22:12,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:22:12,197 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:12,197 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 00:22:12,198 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:12,198 INFO L82 PathProgramCache]: Analyzing trace with hash 197081690, now seen corresponding path program 1 times [2018-01-25 00:22:12,199 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:12,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:12,200 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:12,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:12,200 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:12,219 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:12,297 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 00:22:12,297 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:12,297 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:22:12,297 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:12,298 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:22:12,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:22:12,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:22:12,298 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand 5 states. [2018-01-25 00:22:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:12,525 INFO L93 Difference]: Finished difference Result 241 states and 257 transitions. [2018-01-25 00:22:12,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:22:12,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 00:22:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:12,527 INFO L225 Difference]: With dead ends: 241 [2018-01-25 00:22:12,527 INFO L226 Difference]: Without dead ends: 240 [2018-01-25 00:22:12,528 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 [2018-01-25 00:22:12,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-25 00:22:12,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 149. [2018-01-25 00:22:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-25 00:22:12,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2018-01-25 00:22:12,541 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 18 [2018-01-25 00:22:12,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:12,541 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2018-01-25 00:22:12,541 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:22:12,541 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2018-01-25 00:22:12,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:22:12,541 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:12,541 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 00:22:12,542 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:12,542 INFO L82 PathProgramCache]: Analyzing trace with hash 197081689, now seen corresponding path program 1 times [2018-01-25 00:22:12,542 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:12,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:12,543 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:12,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:12,543 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:12,555 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:12,599 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 00:22:12,600 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:12,600 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:22:12,600 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:12,600 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:22:12,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:22:12,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:22:12,601 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 5 states. [2018-01-25 00:22:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:12,799 INFO L93 Difference]: Finished difference Result 213 states and 225 transitions. [2018-01-25 00:22:12,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:22:12,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 00:22:12,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:12,801 INFO L225 Difference]: With dead ends: 213 [2018-01-25 00:22:12,801 INFO L226 Difference]: Without dead ends: 212 [2018-01-25 00:22:12,802 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 [2018-01-25 00:22:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-25 00:22:12,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 148. [2018-01-25 00:22:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-01-25 00:22:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2018-01-25 00:22:12,812 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 18 [2018-01-25 00:22:12,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:12,812 INFO L432 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2018-01-25 00:22:12,812 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:22:12,813 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2018-01-25 00:22:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 00:22:12,813 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:12,813 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:22:12,813 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:12,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1794584241, now seen corresponding path program 1 times [2018-01-25 00:22:12,814 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:12,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:12,815 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:12,815 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:12,815 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:12,828 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:12,860 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 00:22:12,860 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:12,860 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:22:12,860 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:12,860 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:22:12,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:22:12,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:22:12,861 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand 5 states. [2018-01-25 00:22:12,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:12,980 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2018-01-25 00:22:12,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:22:12,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-25 00:22:12,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:12,981 INFO L225 Difference]: With dead ends: 150 [2018-01-25 00:22:12,981 INFO L226 Difference]: Without dead ends: 149 [2018-01-25 00:22:12,982 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 [2018-01-25 00:22:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-25 00:22:12,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2018-01-25 00:22:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 00:22:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2018-01-25 00:22:12,989 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 19 [2018-01-25 00:22:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:12,989 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2018-01-25 00:22:12,989 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:22:12,989 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2018-01-25 00:22:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 00:22:12,990 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:12,990 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:22:12,990 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:12,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1794584242, now seen corresponding path program 1 times [2018-01-25 00:22:12,990 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:12,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:12,991 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:12,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:12,991 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:13,005 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:13,067 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 00:22:13,067 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:13,067 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:22:13,067 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:13,068 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:22:13,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:22:13,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:22:13,068 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand 5 states. [2018-01-25 00:22:13,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:13,184 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2018-01-25 00:22:13,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:22:13,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-25 00:22:13,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:13,185 INFO L225 Difference]: With dead ends: 147 [2018-01-25 00:22:13,185 INFO L226 Difference]: Without dead ends: 146 [2018-01-25 00:22:13,186 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 [2018-01-25 00:22:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-25 00:22:13,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-01-25 00:22:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-25 00:22:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2018-01-25 00:22:13,193 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 19 [2018-01-25 00:22:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:13,194 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2018-01-25 00:22:13,194 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:22:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2018-01-25 00:22:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:22:13,195 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:13,195 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] [2018-01-25 00:22:13,195 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1293732257, now seen corresponding path program 1 times [2018-01-25 00:22:13,195 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:13,196 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:13,196 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:13,196 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:13,197 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:13,215 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:13,323 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 00:22:13,323 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:13,323 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:22:13,323 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:13,324 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 00:22:13,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 00:22:13,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:22:13,324 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 9 states. [2018-01-25 00:22:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:13,620 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2018-01-25 00:22:13,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 00:22:13,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 00:22:13,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:13,623 INFO L225 Difference]: With dead ends: 148 [2018-01-25 00:22:13,623 INFO L226 Difference]: Without dead ends: 147 [2018-01-25 00:22:13,623 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-25 00:22:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-25 00:22:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2018-01-25 00:22:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-25 00:22:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2018-01-25 00:22:13,630 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 22 [2018-01-25 00:22:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:13,631 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2018-01-25 00:22:13,631 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 00:22:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2018-01-25 00:22:13,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:22:13,631 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:13,631 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] [2018-01-25 00:22:13,631 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:13,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1293732256, now seen corresponding path program 1 times [2018-01-25 00:22:13,632 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:13,632 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:13,633 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:13,633 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:13,633 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:13,647 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:13,836 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 00:22:13,837 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:13,837 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:22:13,837 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:13,837 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 00:22:13,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 00:22:13,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:22:13,838 INFO L87 Difference]: Start difference. First operand 145 states and 153 transitions. Second operand 9 states. [2018-01-25 00:22:14,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:14,401 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2018-01-25 00:22:14,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 00:22:14,401 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 00:22:14,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:14,402 INFO L225 Difference]: With dead ends: 147 [2018-01-25 00:22:14,403 INFO L226 Difference]: Without dead ends: 146 [2018-01-25 00:22:14,403 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-25 00:22:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-25 00:22:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2018-01-25 00:22:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-25 00:22:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2018-01-25 00:22:14,409 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 22 [2018-01-25 00:22:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:14,410 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2018-01-25 00:22:14,410 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 00:22:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2018-01-25 00:22:14,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:22:14,411 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:14,411 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] [2018-01-25 00:22:14,411 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:14,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1249497819, now seen corresponding path program 1 times [2018-01-25 00:22:14,412 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:14,413 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:14,413 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:14,413 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:14,413 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:14,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:14,600 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 00:22:14,600 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:14,600 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:22:14,601 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:14,601 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 00:22:14,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 00:22:14,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:22:14,602 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 9 states. [2018-01-25 00:22:15,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:15,088 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-01-25 00:22:15,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:22:15,088 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 00:22:15,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:15,089 INFO L225 Difference]: With dead ends: 146 [2018-01-25 00:22:15,089 INFO L226 Difference]: Without dead ends: 145 [2018-01-25 00:22:15,089 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-25 00:22:15,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-25 00:22:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2018-01-25 00:22:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-25 00:22:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2018-01-25 00:22:15,095 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 22 [2018-01-25 00:22:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:15,095 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2018-01-25 00:22:15,095 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 00:22:15,095 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2018-01-25 00:22:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:22:15,096 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:15,096 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] [2018-01-25 00:22:15,096 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:15,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1249497820, now seen corresponding path program 1 times [2018-01-25 00:22:15,097 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:15,097 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:15,097 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:15,098 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:15,098 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:15,110 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:15,353 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 00:22:15,353 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:22:15,353 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 00:22:15,353 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:22:15,353 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 00:22:15,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 00:22:15,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:22:15,354 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 10 states. [2018-01-25 00:22:15,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:22:15,800 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2018-01-25 00:22:15,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 00:22:15,800 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-25 00:22:15,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:22:15,801 INFO L225 Difference]: With dead ends: 148 [2018-01-25 00:22:15,801 INFO L226 Difference]: Without dead ends: 140 [2018-01-25 00:22:15,802 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-25 00:22:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-25 00:22:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 119. [2018-01-25 00:22:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-01-25 00:22:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2018-01-25 00:22:15,810 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 22 [2018-01-25 00:22:15,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:22:15,810 INFO L432 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2018-01-25 00:22:15,810 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 00:22:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2018-01-25 00:22:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-25 00:22:15,812 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:22:15,812 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:22:15,812 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:22:15,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1046747597, now seen corresponding path program 1 times [2018-01-25 00:22:15,813 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:22:15,813 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:15,814 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:22:15,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:22:15,814 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:22:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:22:15,837 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:22:16,177 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 00:22:16,178 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:22:16,178 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:22:16,179 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-01-25 00:22:16,180 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [15], [17], [20], [62], [65], [66], [69], [72], [75], [76], [79], [82], [86], [91], [95], [103], [105], [106], [112], [116], [117], [124], [128], [134], [137], [243], [244], [248], [249], [250] [2018-01-25 00:22:16,235 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:22:16,235 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