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-rb-sentinel_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:25:42,455 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:25:42,457 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:25:42,473 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:25:42,473 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:25:42,474 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:25:42,475 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:25:42,477 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:25:42,480 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:25:42,481 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:25:42,482 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:25:42,482 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:25:42,483 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:25:42,484 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:25:42,484 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:25:42,487 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:25:42,489 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:25:42,491 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:25:42,492 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:25:42,494 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:25:42,496 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:25:42,496 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:25:42,497 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:25:42,498 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:25:42,499 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:25:42,500 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:25:42,500 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:25:42,501 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:25:42,501 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:25:42,501 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:25:42,502 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:25:42,502 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 00:25:42,513 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:25:42,513 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:25:42,514 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:25:42,514 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:25:42,514 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:25:42,514 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:25:42,515 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:25:42,515 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:25:42,515 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:25:42,516 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:25:42,516 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:25:42,516 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:25:42,516 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:25:42,516 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:25:42,517 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:25:42,517 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:25:42,517 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:25:42,517 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:25:42,517 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:25:42,517 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:25:42,518 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:25:42,518 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:25:42,518 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:25:42,518 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:25:42,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:25:42,519 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:25:42,519 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:25:42,519 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:25:42,519 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:25:42,519 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:25:42,520 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:25:42,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:25:42,520 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:25:42,520 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:25:42,521 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:25:42,521 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:25:42,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:25:42,568 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:25:42,571 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:25:42,572 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:25:42,572 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:25:42,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:25:42,729 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:25:42,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:25:42,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:25:42,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:25:42,742 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:25:42,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:25:42" (1/1) ... [2018-01-25 00:25:42,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41641836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42, skipping insertion in model container [2018-01-25 00:25:42,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:25:42" (1/1) ... [2018-01-25 00:25:42,761 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:25:42,802 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:25:42,925 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:25:42,943 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:25:42,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42 WrapperNode [2018-01-25 00:25:42,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:25:42,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:25:42,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:25:42,955 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:25:42,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42" (1/1) ... [2018-01-25 00:25:42,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42" (1/1) ... [2018-01-25 00:25:42,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42" (1/1) ... [2018-01-25 00:25:42,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42" (1/1) ... [2018-01-25 00:25:42,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42" (1/1) ... [2018-01-25 00:25:42,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42" (1/1) ... [2018-01-25 00:25:42,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42" (1/1) ... [2018-01-25 00:25:42,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:25:42,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:25:42,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:25:42,997 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:25:42,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42" (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 00:25:43,048 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:25:43,048 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:25:43,048 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:25:43,049 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:25:43,049 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:25:43,049 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:25:43,049 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:25:43,049 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:25:43,049 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:25:43,049 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:25:43,049 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:25:43,049 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:25:43,050 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:25:43,050 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:25:43,050 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:25:43,050 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:25:43,050 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:25:43,495 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:25:43,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:25:43 BoogieIcfgContainer [2018-01-25 00:25:43,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:25:43,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:25:43,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:25:43,498 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:25:43,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:25:42" (1/3) ... [2018-01-25 00:25:43,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b56bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:25:43, skipping insertion in model container [2018-01-25 00:25:43,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:42" (2/3) ... [2018-01-25 00:25:43,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b56bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:25:43, skipping insertion in model container [2018-01-25 00:25:43,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:25:43" (3/3) ... [2018-01-25 00:25:43,501 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:25:43,508 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:25:43,514 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 53 error locations. [2018-01-25 00:25:43,563 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:25:43,563 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:25:43,563 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:25:43,563 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:25:43,564 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:25:43,564 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:25:43,564 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:25:43,564 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:25:43,565 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:25:43,588 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-01-25 00:25:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:25:43,593 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:43,594 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:43,594 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:43,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1462365916, now seen corresponding path program 1 times [2018-01-25 00:25:43,599 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:43,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:43,645 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:43,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:43,645 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:43,691 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:43,750 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 00:25:43,752 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:43,753 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:25:43,753 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:43,755 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:25:43,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:25:43,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:25:43,768 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 4 states. [2018-01-25 00:25:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:44,104 INFO L93 Difference]: Finished difference Result 220 states and 261 transitions. [2018-01-25 00:25:44,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:25:44,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:25:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:44,119 INFO L225 Difference]: With dead ends: 220 [2018-01-25 00:25:44,119 INFO L226 Difference]: Without dead ends: 145 [2018-01-25 00:25:44,123 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 00:25:44,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-25 00:25:44,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 126. [2018-01-25 00:25:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-25 00:25:44,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 133 transitions. [2018-01-25 00:25:44,165 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 133 transitions. Word has length 8 [2018-01-25 00:25:44,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:44,165 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 133 transitions. [2018-01-25 00:25:44,165 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:25:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 133 transitions. [2018-01-25 00:25:44,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:25:44,166 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:44,166 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:44,166 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:44,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1462365917, now seen corresponding path program 1 times [2018-01-25 00:25:44,166 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:44,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:44,168 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:44,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:44,168 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:44,186 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:44,256 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 00:25:44,256 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:44,257 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:25:44,257 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:44,258 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:25:44,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:25:44,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:25:44,260 INFO L87 Difference]: Start difference. First operand 126 states and 133 transitions. Second operand 4 states. [2018-01-25 00:25:44,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:44,408 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2018-01-25 00:25:44,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:25:44,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:25:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:44,410 INFO L225 Difference]: With dead ends: 126 [2018-01-25 00:25:44,410 INFO L226 Difference]: Without dead ends: 123 [2018-01-25 00:25:44,411 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 00:25:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-01-25 00:25:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-01-25 00:25:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-25 00:25:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2018-01-25 00:25:44,423 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 8 [2018-01-25 00:25:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:44,424 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2018-01-25 00:25:44,424 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:25:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2018-01-25 00:25:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-25 00:25:44,425 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:44,425 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:44,425 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:44,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1064079776, now seen corresponding path program 1 times [2018-01-25 00:25:44,426 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:44,427 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:44,427 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:44,427 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:44,428 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:44,446 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:44,486 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 00:25:44,486 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:44,486 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:25:44,486 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:44,487 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:25:44,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:25:44,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:25:44,487 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand 4 states. [2018-01-25 00:25:44,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:44,663 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2018-01-25 00:25:44,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:25:44,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-01-25 00:25:44,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:44,665 INFO L225 Difference]: With dead ends: 137 [2018-01-25 00:25:44,665 INFO L226 Difference]: Without dead ends: 130 [2018-01-25 00:25:44,665 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 00:25:44,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-25 00:25:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 118. [2018-01-25 00:25:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-25 00:25:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2018-01-25 00:25:44,674 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 12 [2018-01-25 00:25:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:44,674 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2018-01-25 00:25:44,674 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:25:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2018-01-25 00:25:44,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-25 00:25:44,675 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:44,675 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:44,675 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:44,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1064079775, now seen corresponding path program 1 times [2018-01-25 00:25:44,676 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:44,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:44,678 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:44,678 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:44,678 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:44,694 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:44,743 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 00:25:44,744 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:44,744 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:25:44,744 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:44,744 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:25:44,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:25:44,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:25:44,745 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 4 states. [2018-01-25 00:25:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:44,863 INFO L93 Difference]: Finished difference Result 138 states and 144 transitions. [2018-01-25 00:25:44,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:25:44,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-01-25 00:25:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:44,865 INFO L225 Difference]: With dead ends: 138 [2018-01-25 00:25:44,865 INFO L226 Difference]: Without dead ends: 131 [2018-01-25 00:25:44,865 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 00:25:44,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-25 00:25:44,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2018-01-25 00:25:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-25 00:25:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 130 transitions. [2018-01-25 00:25:44,876 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 130 transitions. Word has length 12 [2018-01-25 00:25:44,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:44,876 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 130 transitions. [2018-01-25 00:25:44,876 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:25:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 130 transitions. [2018-01-25 00:25:44,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 00:25:44,877 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:44,878 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 00:25:44,878 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:44,878 INFO L82 PathProgramCache]: Analyzing trace with hash 503792665, now seen corresponding path program 1 times [2018-01-25 00:25:44,878 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:44,880 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:44,880 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:44,880 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:44,880 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:44,905 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:44,977 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 00:25:44,977 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:45,008 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:25:45,008 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:45,008 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:25:45,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:25:45,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:25:45,009 INFO L87 Difference]: Start difference. First operand 123 states and 130 transitions. Second operand 5 states. [2018-01-25 00:25:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:45,222 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2018-01-25 00:25:45,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:25:45,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-25 00:25:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:45,223 INFO L225 Difference]: With dead ends: 137 [2018-01-25 00:25:45,224 INFO L226 Difference]: Without dead ends: 125 [2018-01-25 00:25:45,224 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 00:25:45,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-25 00:25:45,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2018-01-25 00:25:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-25 00:25:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2018-01-25 00:25:45,234 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 19 [2018-01-25 00:25:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:45,235 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2018-01-25 00:25:45,235 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:25:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2018-01-25 00:25:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 00:25:45,236 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:45,236 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 00:25:45,238 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:45,239 INFO L82 PathProgramCache]: Analyzing trace with hash 503792666, now seen corresponding path program 1 times [2018-01-25 00:25:45,239 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:45,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:45,240 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:45,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:45,241 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:45,260 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:45,331 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 00:25:45,331 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:45,331 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:25:45,332 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:45,332 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:25:45,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:25:45,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:25:45,332 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand 5 states. [2018-01-25 00:25:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:45,524 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2018-01-25 00:25:45,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:25:45,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-25 00:25:45,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:45,526 INFO L225 Difference]: With dead ends: 153 [2018-01-25 00:25:45,526 INFO L226 Difference]: Without dead ends: 147 [2018-01-25 00:25:45,526 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 00:25:45,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-25 00:25:45,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 123. [2018-01-25 00:25:45,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-01-25 00:25:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2018-01-25 00:25:45,535 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 19 [2018-01-25 00:25:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:45,535 INFO L432 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2018-01-25 00:25:45,535 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:25:45,535 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2018-01-25 00:25:45,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:25:45,536 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:45,536 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 00:25:45,536 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1871552874, now seen corresponding path program 1 times [2018-01-25 00:25:45,537 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:45,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:45,538 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:45,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:45,539 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:45,554 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:45,612 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 00:25:45,613 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:45,613 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:25:45,613 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:45,613 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:25:45,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:25:45,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:25:45,614 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand 6 states. [2018-01-25 00:25:45,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:45,895 INFO L93 Difference]: Finished difference Result 187 states and 207 transitions. [2018-01-25 00:25:45,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:25:45,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-01-25 00:25:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:45,898 INFO L225 Difference]: With dead ends: 187 [2018-01-25 00:25:45,898 INFO L226 Difference]: Without dead ends: 186 [2018-01-25 00:25:45,898 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 00:25:45,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-25 00:25:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 122. [2018-01-25 00:25:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-25 00:25:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2018-01-25 00:25:45,907 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 22 [2018-01-25 00:25:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:45,907 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2018-01-25 00:25:45,907 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:25:45,907 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2018-01-25 00:25:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:25:45,908 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:45,908 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 00:25:45,908 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:45,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1871552875, now seen corresponding path program 1 times [2018-01-25 00:25:45,908 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:45,909 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:45,909 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:45,909 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:45,909 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:45,924 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:46,017 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 00:25:46,018 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:46,018 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:25:46,018 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:46,019 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:25:46,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:25:46,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:25:46,019 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 6 states. [2018-01-25 00:25:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:46,260 INFO L93 Difference]: Finished difference Result 206 states and 224 transitions. [2018-01-25 00:25:46,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 00:25:46,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-01-25 00:25:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:46,261 INFO L225 Difference]: With dead ends: 206 [2018-01-25 00:25:46,261 INFO L226 Difference]: Without dead ends: 199 [2018-01-25 00:25:46,262 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 00:25:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-01-25 00:25:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 117. [2018-01-25 00:25:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-01-25 00:25:46,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2018-01-25 00:25:46,269 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 22 [2018-01-25 00:25:46,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:46,269 INFO L432 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2018-01-25 00:25:46,269 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:25:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2018-01-25 00:25:46,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-25 00:25:46,271 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:46,271 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:46,271 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:46,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1255187673, now seen corresponding path program 1 times [2018-01-25 00:25:46,271 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:46,272 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:46,273 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:46,273 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:46,273 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:46,290 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:46,363 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 00:25:46,363 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:46,364 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:25:46,364 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:46,364 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:25:46,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:25:46,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:25:46,365 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand 6 states. [2018-01-25 00:25:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:46,572 INFO L93 Difference]: Finished difference Result 200 states and 223 transitions. [2018-01-25 00:25:46,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:25:46,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-01-25 00:25:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:46,573 INFO L225 Difference]: With dead ends: 200 [2018-01-25 00:25:46,573 INFO L226 Difference]: Without dead ends: 199 [2018-01-25 00:25:46,574 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:25:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-01-25 00:25:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 116. [2018-01-25 00:25:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-25 00:25:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2018-01-25 00:25:46,579 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 30 [2018-01-25 00:25:46,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:46,579 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2018-01-25 00:25:46,579 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:25:46,579 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2018-01-25 00:25:46,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-25 00:25:46,580 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:46,580 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:46,580 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:46,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1255187674, now seen corresponding path program 1 times [2018-01-25 00:25:46,581 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:46,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:46,581 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:46,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:46,582 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:46,598 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:46,718 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 00:25:46,719 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:46,719 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:25:46,719 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:46,719 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:25:46,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:25:46,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:25:46,720 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand 6 states. [2018-01-25 00:25:47,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:47,307 INFO L93 Difference]: Finished difference Result 205 states and 224 transitions. [2018-01-25 00:25:47,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:25:47,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-01-25 00:25:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:47,308 INFO L225 Difference]: With dead ends: 205 [2018-01-25 00:25:47,309 INFO L226 Difference]: Without dead ends: 201 [2018-01-25 00:25:47,309 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:25:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-01-25 00:25:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 106. [2018-01-25 00:25:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-01-25 00:25:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2018-01-25 00:25:47,318 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 30 [2018-01-25 00:25:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:47,319 INFO L432 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2018-01-25 00:25:47,319 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:25:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2018-01-25 00:25:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-25 00:25:47,320 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:47,321 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:47,321 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:47,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1382402606, now seen corresponding path program 1 times [2018-01-25 00:25:47,321 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:47,323 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:47,323 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:47,323 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:47,323 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:47,335 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:47,385 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 00:25:47,385 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:47,385 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:25:47,385 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:47,386 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 00:25:47,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 00:25:47,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:25:47,386 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand 8 states. [2018-01-25 00:25:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:48,053 INFO L93 Difference]: Finished difference Result 172 states and 186 transitions. [2018-01-25 00:25:48,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:25:48,054 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-01-25 00:25:48,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:48,055 INFO L225 Difference]: With dead ends: 172 [2018-01-25 00:25:48,055 INFO L226 Difference]: Without dead ends: 133 [2018-01-25 00:25:48,055 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-01-25 00:25:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-01-25 00:25:48,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 106. [2018-01-25 00:25:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-01-25 00:25:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2018-01-25 00:25:48,060 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 32 [2018-01-25 00:25:48,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:48,060 INFO L432 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2018-01-25 00:25:48,060 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 00:25:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2018-01-25 00:25:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:25:48,062 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:48,062 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:48,062 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, mainErr52EnsuresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:48,062 INFO L82 PathProgramCache]: Analyzing trace with hash -46210284, now seen corresponding path program 1 times [2018-01-25 00:25:48,062 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:48,064 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:48,064 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:48,064 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:48,064 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:48,075 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:25:48,231 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:25:48,231 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:25:48,232 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-01-25 00:25:48,234 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [9], [10], [13], [16], [20], [22], [25], [69], [73], [78], [82], [90], [91], [98], [102], [110], [116], [117], [118], [166], [168], [171], [224], [225], [229], [230], [231] [2018-01-25 00:25:48,290 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:25:48,290 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