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_preciseopt.epf -i ../../../trunk/examples/svcomp/memsafety-ext/tree_dsw_true-valid-memsafety_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:07:22,991 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:07:22,992 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:07:23,009 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:07:23,010 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:07:23,011 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:07:23,012 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:07:23,014 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:07:23,016 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:07:23,017 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:07:23,018 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:07:23,018 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:07:23,019 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:07:23,021 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:07:23,022 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:07:23,026 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:07:23,028 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:07:23,030 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:07:23,031 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:07:23,033 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:07:23,036 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:07:23,036 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:07:23,036 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:07:23,037 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:07:23,038 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:07:23,040 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:07:23,040 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:07:23,041 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:07:23,041 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:07:23,041 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:07:23,042 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:07:23,042 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_preciseopt.epf [2018-01-25 03:07:23,055 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:07:23,056 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:07:23,057 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:07:23,057 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:07:23,057 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:07:23,058 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:07:23,058 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:07:23,058 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:07:23,058 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:07:23,059 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:07:23,059 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:07:23,059 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:07:23,060 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:07:23,060 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:07:23,060 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:07:23,060 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:07:23,060 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:07:23,061 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:07:23,061 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:07:23,061 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:07:23,061 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:07:23,062 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:07:23,062 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:07:23,062 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:07:23,062 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:07:23,062 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:07:23,063 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:07:23,063 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:07:23,063 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:07:23,063 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:07:23,063 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:07:23,064 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:07:23,064 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:07:23,064 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:07:23,064 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:07:23,065 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:07:23,065 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:07:23,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:07:23,136 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:07:23,141 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:07:23,143 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:07:23,144 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:07:23,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_dsw_true-valid-memsafety_false-termination.i [2018-01-25 03:07:23,387 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:07:23,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:07:23,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:07:23,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:07:23,416 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:07:23,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:07:23" (1/1) ... [2018-01-25 03:07:23,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c11a2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23, skipping insertion in model container [2018-01-25 03:07:23,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:07:23" (1/1) ... [2018-01-25 03:07:23,457 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:07:23,526 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:07:23,685 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:07:23,738 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:07:23,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23 WrapperNode [2018-01-25 03:07:23,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:07:23,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:07:23,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:07:23,751 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:07:23,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23" (1/1) ... [2018-01-25 03:07:23,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23" (1/1) ... [2018-01-25 03:07:23,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23" (1/1) ... [2018-01-25 03:07:23,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23" (1/1) ... [2018-01-25 03:07:23,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23" (1/1) ... [2018-01-25 03:07:23,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23" (1/1) ... [2018-01-25 03:07:23,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23" (1/1) ... [2018-01-25 03:07:23,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:07:23,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:07:23,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:07:23,805 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:07:23,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23" (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 03:07:23,901 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:07:23,901 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:07:23,902 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:07:23,902 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:07:23,902 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:07:23,902 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:07:23,902 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:07:23,902 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:07:23,903 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:07:23,903 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:07:23,903 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:07:23,903 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:07:23,903 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:07:23,903 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:07:24,641 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:07:24,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:07:24 BoogieIcfgContainer [2018-01-25 03:07:24,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:07:24,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:07:24,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:07:24,644 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:07:24,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:07:23" (1/3) ... [2018-01-25 03:07:24,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534555ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:07:24, skipping insertion in model container [2018-01-25 03:07:24,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:07:23" (2/3) ... [2018-01-25 03:07:24,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534555ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:07:24, skipping insertion in model container [2018-01-25 03:07:24,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:07:24" (3/3) ... [2018-01-25 03:07:24,648 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_dsw_true-valid-memsafety_false-termination.i [2018-01-25 03:07:24,655 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:07:24,661 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 75 error locations. [2018-01-25 03:07:24,707 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:07:24,707 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:07:24,708 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:07:24,708 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:07:24,708 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:07:24,708 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:07:24,708 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:07:24,709 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:07:24,710 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:07:24,737 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2018-01-25 03:07:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:07:24,744 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:24,745 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:24,745 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:24,750 INFO L82 PathProgramCache]: Analyzing trace with hash -985735074, now seen corresponding path program 1 times [2018-01-25 03:07:24,753 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:24,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:24,799 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:24,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:24,799 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:24,850 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:24,914 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 03:07:24,917 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:24,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:24,917 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:24,921 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:07:24,932 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:07:24,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:07:24,936 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 4 states. [2018-01-25 03:07:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:25,397 INFO L93 Difference]: Finished difference Result 348 states and 384 transitions. [2018-01-25 03:07:25,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:07:25,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:07:25,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:25,413 INFO L225 Difference]: With dead ends: 348 [2018-01-25 03:07:25,414 INFO L226 Difference]: Without dead ends: 183 [2018-01-25 03:07:25,419 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 03:07:25,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-25 03:07:25,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 168. [2018-01-25 03:07:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-01-25 03:07:25,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 181 transitions. [2018-01-25 03:07:25,469 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 181 transitions. Word has length 8 [2018-01-25 03:07:25,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:25,470 INFO L432 AbstractCegarLoop]: Abstraction has 168 states and 181 transitions. [2018-01-25 03:07:25,470 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:07:25,471 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 181 transitions. [2018-01-25 03:07:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:07:25,471 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:25,471 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:25,471 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:25,472 INFO L82 PathProgramCache]: Analyzing trace with hash -985735073, now seen corresponding path program 1 times [2018-01-25 03:07:25,472 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:25,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:25,473 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:25,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:25,474 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:25,499 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:25,580 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 03:07:25,581 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:25,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:25,581 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:25,583 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:07:25,583 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:07:25,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:07:25,584 INFO L87 Difference]: Start difference. First operand 168 states and 181 transitions. Second operand 4 states. [2018-01-25 03:07:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:25,860 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2018-01-25 03:07:25,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:07:25,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:07:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:25,863 INFO L225 Difference]: With dead ends: 168 [2018-01-25 03:07:25,863 INFO L226 Difference]: Without dead ends: 166 [2018-01-25 03:07:25,864 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 03:07:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-25 03:07:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-01-25 03:07:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-01-25 03:07:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 179 transitions. [2018-01-25 03:07:25,879 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 179 transitions. Word has length 8 [2018-01-25 03:07:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:25,879 INFO L432 AbstractCegarLoop]: Abstraction has 166 states and 179 transitions. [2018-01-25 03:07:25,879 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:07:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 179 transitions. [2018-01-25 03:07:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:07:25,880 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:25,880 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:25,880 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:25,881 INFO L82 PathProgramCache]: Analyzing trace with hash 473226571, now seen corresponding path program 1 times [2018-01-25 03:07:25,881 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:25,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:25,882 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:25,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:25,883 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:25,900 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:25,934 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 03:07:25,934 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:25,934 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:25,934 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:25,935 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:07:25,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:07:25,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:07:25,935 INFO L87 Difference]: Start difference. First operand 166 states and 179 transitions. Second operand 4 states. [2018-01-25 03:07:26,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:26,123 INFO L93 Difference]: Finished difference Result 200 states and 217 transitions. [2018-01-25 03:07:26,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:07:26,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-25 03:07:26,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:26,125 INFO L225 Difference]: With dead ends: 200 [2018-01-25 03:07:26,125 INFO L226 Difference]: Without dead ends: 180 [2018-01-25 03:07:26,125 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 03:07:26,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-01-25 03:07:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 153. [2018-01-25 03:07:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-25 03:07:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 169 transitions. [2018-01-25 03:07:26,140 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 169 transitions. Word has length 14 [2018-01-25 03:07:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:26,140 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 169 transitions. [2018-01-25 03:07:26,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:07:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 169 transitions. [2018-01-25 03:07:26,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:07:26,141 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:26,141 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:26,141 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash 473226572, now seen corresponding path program 1 times [2018-01-25 03:07:26,141 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:26,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:26,142 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:26,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:26,143 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:26,158 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:26,238 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 03:07:26,238 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:26,238 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:07:26,239 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:26,239 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:07:26,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:07:26,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:07:26,239 INFO L87 Difference]: Start difference. First operand 153 states and 169 transitions. Second operand 5 states. [2018-01-25 03:07:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:26,470 INFO L93 Difference]: Finished difference Result 227 states and 250 transitions. [2018-01-25 03:07:26,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:07:26,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-25 03:07:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:26,474 INFO L225 Difference]: With dead ends: 227 [2018-01-25 03:07:26,474 INFO L226 Difference]: Without dead ends: 211 [2018-01-25 03:07:26,475 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:07:26,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-25 03:07:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 188. [2018-01-25 03:07:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-25 03:07:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 215 transitions. [2018-01-25 03:07:26,490 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 215 transitions. Word has length 14 [2018-01-25 03:07:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:26,490 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 215 transitions. [2018-01-25 03:07:26,491 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:07:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 215 transitions. [2018-01-25 03:07:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:07:26,492 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:26,492 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:26,492 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:26,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1727604301, now seen corresponding path program 1 times [2018-01-25 03:07:26,492 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:26,493 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:26,494 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:26,494 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:26,494 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:26,512 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:07:26,603 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:26,603 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:07:26,603 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:26,604 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:07:26,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:07:26,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:07:26,605 INFO L87 Difference]: Start difference. First operand 188 states and 215 transitions. Second operand 7 states. [2018-01-25 03:07:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:27,178 INFO L93 Difference]: Finished difference Result 310 states and 342 transitions. [2018-01-25 03:07:27,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:07:27,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-01-25 03:07:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:27,180 INFO L225 Difference]: With dead ends: 310 [2018-01-25 03:07:27,180 INFO L226 Difference]: Without dead ends: 249 [2018-01-25 03:07:27,182 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-01-25 03:07:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-01-25 03:07:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 189. [2018-01-25 03:07:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-25 03:07:27,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 216 transitions. [2018-01-25 03:07:27,211 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 216 transitions. Word has length 18 [2018-01-25 03:07:27,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:27,211 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 216 transitions. [2018-01-25 03:07:27,211 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:07:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 216 transitions. [2018-01-25 03:07:27,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 03:07:27,212 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:27,213 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] [2018-01-25 03:07:27,213 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:27,213 INFO L82 PathProgramCache]: Analyzing trace with hash 471570443, now seen corresponding path program 1 times [2018-01-25 03:07:27,213 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:27,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:27,215 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:27,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:27,215 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:27,229 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:27,326 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 03:07:27,326 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:27,326 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:07:27,326 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:27,326 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:07:27,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:07:27,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:07:27,327 INFO L87 Difference]: Start difference. First operand 189 states and 216 transitions. Second operand 5 states. [2018-01-25 03:07:27,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:27,538 INFO L93 Difference]: Finished difference Result 266 states and 295 transitions. [2018-01-25 03:07:27,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:07:27,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-01-25 03:07:27,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:27,540 INFO L225 Difference]: With dead ends: 266 [2018-01-25 03:07:27,540 INFO L226 Difference]: Without dead ends: 207 [2018-01-25 03:07:27,541 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 03:07:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-01-25 03:07:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 188. [2018-01-25 03:07:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-25 03:07:27,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2018-01-25 03:07:27,551 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 21 [2018-01-25 03:07:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:27,551 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2018-01-25 03:07:27,551 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:07:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2018-01-25 03:07:27,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 03:07:27,552 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:27,553 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:27,553 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:27,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1608607228, now seen corresponding path program 1 times [2018-01-25 03:07:27,553 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:27,554 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:27,554 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:27,555 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:27,555 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:27,568 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:07:27,632 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:27,634 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:27,634 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:27,634 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:07:27,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:07:27,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:07:27,641 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand 3 states. [2018-01-25 03:07:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:27,736 INFO L93 Difference]: Finished difference Result 369 states and 423 transitions. [2018-01-25 03:07:27,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:07:27,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-25 03:07:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:27,738 INFO L225 Difference]: With dead ends: 369 [2018-01-25 03:07:27,738 INFO L226 Difference]: Without dead ends: 190 [2018-01-25 03:07:27,739 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 [2018-01-25 03:07:27,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-25 03:07:27,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-01-25 03:07:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-25 03:07:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 216 transitions. [2018-01-25 03:07:27,749 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 216 transitions. Word has length 22 [2018-01-25 03:07:27,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:27,750 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 216 transitions. [2018-01-25 03:07:27,750 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:07:27,750 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 216 transitions. [2018-01-25 03:07:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-25 03:07:27,751 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:27,751 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:27,751 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:27,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1343010439, now seen corresponding path program 1 times [2018-01-25 03:07:27,751 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:27,752 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:27,752 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:27,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:27,753 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:27,770 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:07:28,006 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:28,007 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:07:28,007 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:28,007 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:07:28,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:07:28,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:07:28,008 INFO L87 Difference]: Start difference. First operand 190 states and 216 transitions. Second operand 6 states. [2018-01-25 03:07:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:28,354 INFO L93 Difference]: Finished difference Result 419 states and 479 transitions. [2018-01-25 03:07:28,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:07:28,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-25 03:07:28,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:28,355 INFO L225 Difference]: With dead ends: 419 [2018-01-25 03:07:28,356 INFO L226 Difference]: Without dead ends: 238 [2018-01-25 03:07:28,357 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:07:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-01-25 03:07:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 206. [2018-01-25 03:07:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-25 03:07:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 237 transitions. [2018-01-25 03:07:28,366 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 237 transitions. Word has length 24 [2018-01-25 03:07:28,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:28,367 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 237 transitions. [2018-01-25 03:07:28,367 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:07:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 237 transitions. [2018-01-25 03:07:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:07:28,368 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:28,368 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] [2018-01-25 03:07:28,368 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:28,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1202174280, now seen corresponding path program 1 times [2018-01-25 03:07:28,368 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:28,369 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:28,369 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:28,369 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:28,369 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:28,381 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:28,413 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 03:07:28,414 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:28,414 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:07:28,414 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:28,414 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:07:28,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:07:28,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:07:28,415 INFO L87 Difference]: Start difference. First operand 206 states and 237 transitions. Second operand 5 states. [2018-01-25 03:07:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:28,695 INFO L93 Difference]: Finished difference Result 332 states and 384 transitions. [2018-01-25 03:07:28,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:07:28,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-25 03:07:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:28,698 INFO L225 Difference]: With dead ends: 332 [2018-01-25 03:07:28,698 INFO L226 Difference]: Without dead ends: 331 [2018-01-25 03:07:28,698 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:07:28,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-01-25 03:07:28,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 205. [2018-01-25 03:07:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-25 03:07:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2018-01-25 03:07:28,708 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 25 [2018-01-25 03:07:28,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:28,709 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2018-01-25 03:07:28,709 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:07:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2018-01-25 03:07:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-25 03:07:28,710 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:28,710 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:28,710 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:28,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1202174281, now seen corresponding path program 1 times [2018-01-25 03:07:28,711 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:28,711 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:28,712 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:28,712 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:28,712 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:28,727 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:28,878 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 03:07:28,879 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:28,879 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:07:28,879 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:28,879 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:07:28,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:07:28,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:07:28,880 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand 5 states. [2018-01-25 03:07:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:29,213 INFO L93 Difference]: Finished difference Result 365 states and 417 transitions. [2018-01-25 03:07:29,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:07:29,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-25 03:07:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:29,215 INFO L225 Difference]: With dead ends: 365 [2018-01-25 03:07:29,215 INFO L226 Difference]: Without dead ends: 364 [2018-01-25 03:07:29,216 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:07:29,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-01-25 03:07:29,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 204. [2018-01-25 03:07:29,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-01-25 03:07:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2018-01-25 03:07:29,228 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 25 [2018-01-25 03:07:29,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:29,229 INFO L432 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2018-01-25 03:07:29,229 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:07:29,229 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2018-01-25 03:07:29,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 03:07:29,230 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:29,231 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] [2018-01-25 03:07:29,231 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:29,231 INFO L82 PathProgramCache]: Analyzing trace with hash -2086605704, now seen corresponding path program 1 times [2018-01-25 03:07:29,231 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:29,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:29,232 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:29,232 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:29,233 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:29,245 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:07:29,284 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:29,285 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:07:29,285 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:29,285 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:07:29,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:07:29,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:07:29,286 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand 4 states. [2018-01-25 03:07:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:29,476 INFO L93 Difference]: Finished difference Result 251 states and 284 transitions. [2018-01-25 03:07:29,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:07:29,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-25 03:07:29,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:29,478 INFO L225 Difference]: With dead ends: 251 [2018-01-25 03:07:29,478 INFO L226 Difference]: Without dead ends: 250 [2018-01-25 03:07:29,479 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:07:29,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-01-25 03:07:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 207. [2018-01-25 03:07:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-01-25 03:07:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 238 transitions. [2018-01-25 03:07:29,495 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 238 transitions. Word has length 27 [2018-01-25 03:07:29,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:29,496 INFO L432 AbstractCegarLoop]: Abstraction has 207 states and 238 transitions. [2018-01-25 03:07:29,496 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:07:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 238 transitions. [2018-01-25 03:07:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 03:07:29,497 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:29,497 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] [2018-01-25 03:07:29,497 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:29,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2086605703, now seen corresponding path program 1 times [2018-01-25 03:07:29,498 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:29,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:29,499 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:29,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:29,499 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:29,512 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-01-25 03:07:29,648 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:29,648 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:07:29,648 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:29,648 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 03:07:29,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 03:07:29,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:07:29,649 INFO L87 Difference]: Start difference. First operand 207 states and 238 transitions. Second operand 8 states. [2018-01-25 03:07:30,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:30,406 INFO L93 Difference]: Finished difference Result 321 states and 357 transitions. [2018-01-25 03:07:30,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:07:30,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-01-25 03:07:30,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:30,409 INFO L225 Difference]: With dead ends: 321 [2018-01-25 03:07:30,409 INFO L226 Difference]: Without dead ends: 317 [2018-01-25 03:07:30,409 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-01-25 03:07:30,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-01-25 03:07:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 211. [2018-01-25 03:07:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-25 03:07:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 244 transitions. [2018-01-25 03:07:30,425 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 244 transitions. Word has length 27 [2018-01-25 03:07:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:30,425 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 244 transitions. [2018-01-25 03:07:30,425 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 03:07:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 244 transitions. [2018-01-25 03:07:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 03:07:30,426 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:30,427 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] [2018-01-25 03:07:30,427 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:30,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2086546122, now seen corresponding path program 1 times [2018-01-25 03:07:30,431 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:30,431 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:30,432 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:30,432 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:30,432 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:30,445 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:07:30,762 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:07:30,762 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:07:30,762 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:07:30,762 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:07:30,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:07:30,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:07:30,763 INFO L87 Difference]: Start difference. First operand 211 states and 244 transitions. Second operand 7 states. [2018-01-25 03:07:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:07:31,080 INFO L93 Difference]: Finished difference Result 423 states and 470 transitions. [2018-01-25 03:07:31,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 03:07:31,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-01-25 03:07:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:07:31,082 INFO L225 Difference]: With dead ends: 423 [2018-01-25 03:07:31,082 INFO L226 Difference]: Without dead ends: 343 [2018-01-25 03:07:31,082 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:07:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-01-25 03:07:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 223. [2018-01-25 03:07:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-01-25 03:07:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 256 transitions. [2018-01-25 03:07:31,096 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 256 transitions. Word has length 27 [2018-01-25 03:07:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:07:31,097 INFO L432 AbstractCegarLoop]: Abstraction has 223 states and 256 transitions. [2018-01-25 03:07:31,097 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:07:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 256 transitions. [2018-01-25 03:07:31,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:07:31,098 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:07:31,098 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:07:31,098 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:07:31,099 INFO L82 PathProgramCache]: Analyzing trace with hash -260268355, now seen corresponding path program 1 times [2018-01-25 03:07:31,099 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:07:31,100 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:31,100 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:07:31,100 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:07:31,100 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:07:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:07:31,110 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:07:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:07:31,170 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:07:31,170 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:07:31,171 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-01-25 03:07:31,173 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [10], [16], [18], [21], [136], [137], [141], [145], [147], [148], [151], [152], [155], [158], [159], [162], [165], [174], [176], [264], [265], [266] [2018-01-25 03:07:31,222 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:07:31,222 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