java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-sorted_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 21:02:34,481 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 21:02:34,483 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 21:02:34,499 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 21:02:34,500 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 21:02:34,501 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 21:02:34,502 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 21:02:34,504 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 21:02:34,506 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 21:02:34,507 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 21:02:34,508 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 21:02:34,508 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 21:02:34,509 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 21:02:34,510 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 21:02:34,511 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 21:02:34,514 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 21:02:34,516 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 21:02:34,518 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 21:02:34,520 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 21:02:34,521 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 21:02:34,524 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 21:02:34,524 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 21:02:34,524 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 21:02:34,525 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 21:02:34,526 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 21:02:34,528 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 21:02:34,528 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 21:02:34,529 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 21:02:34,529 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 21:02:34,529 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 21:02:34,530 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 21:02:34,530 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-24 21:02:34,538 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 21:02:34,539 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 21:02:34,539 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 21:02:34,539 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 21:02:34,540 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 21:02:34,540 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 21:02:34,540 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 21:02:34,540 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 21:02:34,540 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 21:02:34,541 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 21:02:34,541 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 21:02:34,541 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 21:02:34,541 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 21:02:34,541 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 21:02:34,541 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 21:02:34,541 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 21:02:34,542 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 21:02:34,542 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 21:02:34,542 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 21:02:34,542 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 21:02:34,542 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 21:02:34,542 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 21:02:34,542 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 21:02:34,543 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 21:02:34,543 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 21:02:34,543 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 21:02:34,543 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 21:02:34,543 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 21:02:34,544 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 21:02:34,544 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 21:02:34,544 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 21:02:34,544 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 21:02:34,544 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 21:02:34,544 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 21:02:34,544 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 21:02:34,545 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 21:02:34,545 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 21:02:34,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 21:02:34,589 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 21:02:34,592 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 21:02:34,593 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 21:02:34,593 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 21:02:34,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-sorted_true-unreach-call_true-valid-memsafety.i [2018-01-24 21:02:34,764 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 21:02:34,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 21:02:34,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 21:02:34,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 21:02:34,777 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 21:02:34,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:02:34" (1/1) ... [2018-01-24 21:02:34,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ee3542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:34, skipping insertion in model container [2018-01-24 21:02:34,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:02:34" (1/1) ... [2018-01-24 21:02:34,797 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:02:34,839 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:02:34,968 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:02:34,995 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:02:35,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:35 WrapperNode [2018-01-24 21:02:35,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 21:02:35,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 21:02:35,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 21:02:35,009 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 21:02:35,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:35" (1/1) ... [2018-01-24 21:02:35,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:35" (1/1) ... [2018-01-24 21:02:35,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:35" (1/1) ... [2018-01-24 21:02:35,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:35" (1/1) ... [2018-01-24 21:02:35,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:35" (1/1) ... [2018-01-24 21:02:35,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:35" (1/1) ... [2018-01-24 21:02:35,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:35" (1/1) ... [2018-01-24 21:02:35,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 21:02:35,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 21:02:35,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 21:02:35,058 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 21:02:35,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:35" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 21:02:35,109 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 21:02:35,109 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 21:02:35,109 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 21:02:35,109 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 21:02:35,109 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 21:02:35,110 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 21:02:35,110 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 21:02:35,110 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 21:02:35,110 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 21:02:35,110 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 21:02:35,110 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 21:02:35,111 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 21:02:35,111 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 21:02:35,111 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 21:02:35,111 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 21:02:35,111 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 21:02:35,111 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 21:02:35,669 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 21:02:35,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:02:35 BoogieIcfgContainer [2018-01-24 21:02:35,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 21:02:35,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 21:02:35,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 21:02:35,674 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 21:02:35,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 09:02:34" (1/3) ... [2018-01-24 21:02:35,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4499edab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 09:02:35, skipping insertion in model container [2018-01-24 21:02:35,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:02:35" (2/3) ... [2018-01-24 21:02:35,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4499edab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 09:02:35, skipping insertion in model container [2018-01-24 21:02:35,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:02:35" (3/3) ... [2018-01-24 21:02:35,680 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-sorted_true-unreach-call_true-valid-memsafety.i [2018-01-24 21:02:35,690 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 21:02:35,699 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 63 error locations. [2018-01-24 21:02:35,755 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 21:02:35,756 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 21:02:35,756 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 21:02:35,756 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 21:02:35,756 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 21:02:35,756 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 21:02:35,757 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 21:02:35,757 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 21:02:35,758 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 21:02:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2018-01-24 21:02:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 21:02:35,792 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:02:35,793 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:02:35,793 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:02:35,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1406208534, now seen corresponding path program 1 times [2018-01-24 21:02:35,802 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:02:35,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:35,866 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:02:35,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:35,866 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:02:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:02:35,920 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:02:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:02:35,988 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:02:35,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:02:35,988 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:02:35,992 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:02:36,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:02:36,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:02:36,010 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2018-01-24 21:02:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:02:36,333 INFO L93 Difference]: Finished difference Result 314 states and 388 transitions. [2018-01-24 21:02:36,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 21:02:36,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 21:02:36,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:02:36,344 INFO L225 Difference]: With dead ends: 314 [2018-01-24 21:02:36,345 INFO L226 Difference]: Without dead ends: 176 [2018-01-24 21:02:36,348 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:02:36,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-24 21:02:36,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 164. [2018-01-24 21:02:36,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-01-24 21:02:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2018-01-24 21:02:36,386 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 8 [2018-01-24 21:02:36,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:02:36,386 INFO L432 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2018-01-24 21:02:36,386 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:02:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2018-01-24 21:02:36,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 21:02:36,386 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:02:36,387 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:02:36,387 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:02:36,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1406208535, now seen corresponding path program 1 times [2018-01-24 21:02:36,387 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:02:36,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:36,388 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:02:36,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:36,388 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:02:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:02:36,405 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:02:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:02:36,504 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:02:36,505 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:02:36,505 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:02:36,507 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:02:36,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:02:36,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:02:36,507 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 4 states. [2018-01-24 21:02:36,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:02:36,705 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2018-01-24 21:02:36,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 21:02:36,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 21:02:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:02:36,707 INFO L225 Difference]: With dead ends: 169 [2018-01-24 21:02:36,707 INFO L226 Difference]: Without dead ends: 167 [2018-01-24 21:02:36,708 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:02:36,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-24 21:02:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2018-01-24 21:02:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-01-24 21:02:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2018-01-24 21:02:36,723 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 8 [2018-01-24 21:02:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:02:36,723 INFO L432 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2018-01-24 21:02:36,723 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:02:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2018-01-24 21:02:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 21:02:36,724 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:02:36,724 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:02:36,724 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:02:36,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1461588635, now seen corresponding path program 1 times [2018-01-24 21:02:36,724 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:02:36,725 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:36,726 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:02:36,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:36,726 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:02:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:02:36,751 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:02:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:02:36,827 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:02:36,828 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:02:36,828 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:02:36,828 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:02:36,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:02:36,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:02:36,829 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 4 states. [2018-01-24 21:02:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:02:36,984 INFO L93 Difference]: Finished difference Result 194 states and 208 transitions. [2018-01-24 21:02:36,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:02:36,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-24 21:02:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:02:36,986 INFO L225 Difference]: With dead ends: 194 [2018-01-24 21:02:36,986 INFO L226 Difference]: Without dead ends: 171 [2018-01-24 21:02:36,986 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:02:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-01-24 21:02:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2018-01-24 21:02:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-24 21:02:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 182 transitions. [2018-01-24 21:02:36,999 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 182 transitions. Word has length 15 [2018-01-24 21:02:37,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:02:37,000 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 182 transitions. [2018-01-24 21:02:37,000 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:02:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 182 transitions. [2018-01-24 21:02:37,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 21:02:37,001 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:02:37,001 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:02:37,001 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:02:37,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1461588636, now seen corresponding path program 1 times [2018-01-24 21:02:37,002 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:02:37,003 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:37,003 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:02:37,003 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:37,003 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:02:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:02:37,023 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:02:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:02:37,130 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:02:37,130 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 21:02:37,130 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:02:37,130 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 21:02:37,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 21:02:37,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 21:02:37,131 INFO L87 Difference]: Start difference. First operand 161 states and 182 transitions. Second operand 7 states. [2018-01-24 21:02:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:02:37,494 INFO L93 Difference]: Finished difference Result 264 states and 288 transitions. [2018-01-24 21:02:37,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:02:37,496 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-01-24 21:02:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:02:37,497 INFO L225 Difference]: With dead ends: 264 [2018-01-24 21:02:37,498 INFO L226 Difference]: Without dead ends: 243 [2018-01-24 21:02:37,498 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 21:02:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-24 21:02:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2018-01-24 21:02:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-24 21:02:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 252 transitions. [2018-01-24 21:02:37,525 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 252 transitions. Word has length 15 [2018-01-24 21:02:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:02:37,526 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 252 transitions. [2018-01-24 21:02:37,526 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 21:02:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 252 transitions. [2018-01-24 21:02:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 21:02:37,527 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:02:37,527 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:02:37,527 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:02:37,527 INFO L82 PathProgramCache]: Analyzing trace with hash -191427424, now seen corresponding path program 1 times [2018-01-24 21:02:37,527 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:02:37,528 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:37,528 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:02:37,528 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:37,528 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:02:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:02:37,544 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:02:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:02:37,598 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:02:37,598 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:02:37,598 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:02:37,598 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 21:02:37,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 21:02:37,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:02:37,599 INFO L87 Difference]: Start difference. First operand 219 states and 252 transitions. Second operand 6 states. [2018-01-24 21:02:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:02:37,930 INFO L93 Difference]: Finished difference Result 410 states and 471 transitions. [2018-01-24 21:02:37,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 21:02:37,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-24 21:02:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:02:37,934 INFO L225 Difference]: With dead ends: 410 [2018-01-24 21:02:37,935 INFO L226 Difference]: Without dead ends: 409 [2018-01-24 21:02:37,935 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-24 21:02:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-01-24 21:02:37,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 218. [2018-01-24 21:02:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-01-24 21:02:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 251 transitions. [2018-01-24 21:02:37,951 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 251 transitions. Word has length 18 [2018-01-24 21:02:37,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:02:37,951 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 251 transitions. [2018-01-24 21:02:37,951 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 21:02:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 251 transitions. [2018-01-24 21:02:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 21:02:37,952 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:02:37,952 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:02:37,952 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:02:37,952 INFO L82 PathProgramCache]: Analyzing trace with hash -191427423, now seen corresponding path program 1 times [2018-01-24 21:02:37,952 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:02:37,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:37,953 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:02:37,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:37,953 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:02:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:02:37,966 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:02:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:02:38,048 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:02:38,048 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:02:38,048 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:02:38,048 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 21:02:38,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 21:02:38,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:02:38,049 INFO L87 Difference]: Start difference. First operand 218 states and 251 transitions. Second operand 6 states. [2018-01-24 21:02:38,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:02:38,896 INFO L93 Difference]: Finished difference Result 403 states and 465 transitions. [2018-01-24 21:02:38,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 21:02:38,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-24 21:02:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:02:38,899 INFO L225 Difference]: With dead ends: 403 [2018-01-24 21:02:38,899 INFO L226 Difference]: Without dead ends: 398 [2018-01-24 21:02:38,899 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-24 21:02:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-01-24 21:02:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 207. [2018-01-24 21:02:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-01-24 21:02:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 239 transitions. [2018-01-24 21:02:38,914 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 239 transitions. Word has length 18 [2018-01-24 21:02:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:02:38,914 INFO L432 AbstractCegarLoop]: Abstraction has 207 states and 239 transitions. [2018-01-24 21:02:38,914 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 21:02:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 239 transitions. [2018-01-24 21:02:38,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 21:02:38,915 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:02:38,916 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] [2018-01-24 21:02:38,916 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:02:38,916 INFO L82 PathProgramCache]: Analyzing trace with hash 2092077490, now seen corresponding path program 1 times [2018-01-24 21:02:38,916 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:02:38,917 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:38,918 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:02:38,918 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:38,918 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:02:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:02:38,930 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:02:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:02:38,948 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:02:38,948 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:02:38,948 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:02:38,948 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 21:02:38,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 21:02:38,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 21:02:38,949 INFO L87 Difference]: Start difference. First operand 207 states and 239 transitions. Second operand 3 states. [2018-01-24 21:02:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:02:38,998 INFO L93 Difference]: Finished difference Result 439 states and 508 transitions. [2018-01-24 21:02:38,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 21:02:38,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-01-24 21:02:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:02:39,000 INFO L225 Difference]: With dead ends: 439 [2018-01-24 21:02:39,000 INFO L226 Difference]: Without dead ends: 242 [2018-01-24 21:02:39,001 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 21:02:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-24 21:02:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 218. [2018-01-24 21:02:39,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-01-24 21:02:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 251 transitions. [2018-01-24 21:02:39,016 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 251 transitions. Word has length 24 [2018-01-24 21:02:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:02:39,017 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 251 transitions. [2018-01-24 21:02:39,017 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 21:02:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 251 transitions. [2018-01-24 21:02:39,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-24 21:02:39,018 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:02:39,018 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, 1, 1] [2018-01-24 21:02:39,018 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:02:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash -252118467, now seen corresponding path program 1 times [2018-01-24 21:02:39,019 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:02:39,019 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:39,020 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:02:39,020 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:02:39,020 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:02:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:02:39,041 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:02:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 21:02:39,217 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 21:02:39,217 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 21:02:39,218 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-01-24 21:02:39,220 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [14], [17], [19], [20], [21], [24], [27], [28], [31], [34], [40], [41], [53], [57], [62], [66], [72], [76], [78], [81], [84], [85], [89], [358], [359], [363], [364], [365] [2018-01-24 21:02:39,267 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 21:02:39,267 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