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/forester-heap/sll-token_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:53:53,927 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:53:53,928 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:53:53,944 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:53:53,944 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:53:53,945 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:53:53,946 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:53:53,948 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:53:53,951 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:53:53,951 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:53:53,952 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:53:53,953 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:53:53,954 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:53:53,955 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:53:53,956 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:53:53,959 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:53:53,961 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:53:53,963 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:53:53,965 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:53:53,966 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:53:53,969 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:53:53,969 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:53:53,969 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:53:53,970 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:53:53,971 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:53:53,973 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:53:53,973 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:53:53,973 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:53:53,974 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:53:53,974 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:53:53,975 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:53:53,975 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 03:53:53,984 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:53:53,984 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:53:53,985 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:53:53,986 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:53:53,986 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:53:53,986 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:53:53,986 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:53:53,986 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:53:53,986 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:53:53,987 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:53:53,987 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:53:53,987 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:53:53,987 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:53:53,987 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:53:53,987 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:53:53,987 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:53:53,987 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:53:53,988 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:53:53,988 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:53:53,988 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:53:53,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:53:53,988 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:53:53,988 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:53:53,989 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:53:53,989 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:53:53,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:53:53,989 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:53:53,989 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:53:53,989 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:53:53,990 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:53:53,990 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:53:53,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:53:53,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:53:53,990 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:53:53,990 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:53:53,991 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:53:53,991 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:53:54,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:53:54,036 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:53:54,039 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:53:54,040 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:53:54,040 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:53:54,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token_true-unreach-call_true-valid-memsafety.i [2018-01-25 03:53:54,198 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:53:54,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:53:54,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:53:54,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:53:54,212 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:53:54,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:53:54" (1/1) ... [2018-01-25 03:53:54,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc2f868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54, skipping insertion in model container [2018-01-25 03:53:54,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:53:54" (1/1) ... [2018-01-25 03:53:54,236 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:53:54,281 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:53:54,423 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:53:54,442 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:53:54,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54 WrapperNode [2018-01-25 03:53:54,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:53:54,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:53:54,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:53:54,451 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:53:54,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54" (1/1) ... [2018-01-25 03:53:54,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54" (1/1) ... [2018-01-25 03:53:54,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54" (1/1) ... [2018-01-25 03:53:54,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54" (1/1) ... [2018-01-25 03:53:54,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54" (1/1) ... [2018-01-25 03:53:54,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54" (1/1) ... [2018-01-25 03:53:54,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54" (1/1) ... [2018-01-25 03:53:54,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:53:54,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:53:54,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:53:54,495 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:53:54,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54" (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 03:53:54,550 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:53:54,551 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:53:54,551 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:53:54,551 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:53:54,551 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:53:54,551 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:53:54,551 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:53:54,552 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:53:54,552 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:53:54,552 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:53:54,552 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:53:54,552 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:53:54,552 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:53:54,553 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 03:53:54,553 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:53:54,553 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:53:54,553 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:53:54,994 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:53:54,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:53:54 BoogieIcfgContainer [2018-01-25 03:53:54,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:53:54,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:53:54,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:53:55,000 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:53:55,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:53:54" (1/3) ... [2018-01-25 03:53:55,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dba77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:53:55, skipping insertion in model container [2018-01-25 03:53:55,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:53:54" (2/3) ... [2018-01-25 03:53:55,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74dba77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:53:55, skipping insertion in model container [2018-01-25 03:53:55,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:53:54" (3/3) ... [2018-01-25 03:53:55,005 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-token_true-unreach-call_true-valid-memsafety.i [2018-01-25 03:53:55,014 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:53:55,023 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 45 error locations. [2018-01-25 03:53:55,077 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:53:55,077 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:53:55,077 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:53:55,077 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:53:55,077 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:53:55,077 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:53:55,078 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:53:55,078 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:53:55,079 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:53:55,097 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2018-01-25 03:53:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:53:55,104 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:55,105 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:55,105 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:55,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1807775718, now seen corresponding path program 1 times [2018-01-25 03:53:55,111 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:55,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:55,154 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:55,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:55,154 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:55,204 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:55,273 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 03:53:55,275 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:55,276 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:53:55,276 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:55,280 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:53:55,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:53:55,296 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:53:55,298 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2018-01-25 03:53:55,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:55,645 INFO L93 Difference]: Finished difference Result 238 states and 289 transitions. [2018-01-25 03:53:55,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:53:55,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:53:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:55,658 INFO L225 Difference]: With dead ends: 238 [2018-01-25 03:53:55,658 INFO L226 Difference]: Without dead ends: 133 [2018-01-25 03:53:55,662 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 03:53:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-01-25 03:53:55,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 109. [2018-01-25 03:53:55,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-25 03:53:55,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-01-25 03:53:55,700 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 8 [2018-01-25 03:53:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:55,700 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-01-25 03:53:55,700 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:53:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-01-25 03:53:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:53:55,701 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:55,701 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:55,701 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:55,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1807775717, now seen corresponding path program 1 times [2018-01-25 03:53:55,702 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:55,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:55,703 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:55,703 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:55,703 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:55,719 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:55,804 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 03:53:55,804 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:55,805 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:53:55,805 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:55,807 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:53:55,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:53:55,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:53:55,807 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 4 states. [2018-01-25 03:53:55,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:55,947 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2018-01-25 03:53:55,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:53:55,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:53:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:55,949 INFO L225 Difference]: With dead ends: 133 [2018-01-25 03:53:55,949 INFO L226 Difference]: Without dead ends: 131 [2018-01-25 03:53:55,950 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 03:53:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-25 03:53:55,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 107. [2018-01-25 03:53:55,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-01-25 03:53:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2018-01-25 03:53:55,963 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 8 [2018-01-25 03:53:55,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:55,964 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2018-01-25 03:53:55,964 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:53:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2018-01-25 03:53:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:53:55,965 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:55,965 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:55,965 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:55,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1410075710, now seen corresponding path program 1 times [2018-01-25 03:53:55,965 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:55,966 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:55,967 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:55,967 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:55,967 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:55,984 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:56,056 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 03:53:56,056 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:56,057 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:53:56,057 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:56,057 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:53:56,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:53:56,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:53:56,058 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 4 states. [2018-01-25 03:53:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:56,231 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2018-01-25 03:53:56,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:53:56,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-25 03:53:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:56,233 INFO L225 Difference]: With dead ends: 126 [2018-01-25 03:53:56,233 INFO L226 Difference]: Without dead ends: 111 [2018-01-25 03:53:56,234 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:53:56,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-01-25 03:53:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2018-01-25 03:53:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-25 03:53:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2018-01-25 03:53:56,246 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 14 [2018-01-25 03:53:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:56,247 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2018-01-25 03:53:56,247 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:53:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2018-01-25 03:53:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-25 03:53:56,248 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:56,248 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:56,248 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:56,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1410075709, now seen corresponding path program 1 times [2018-01-25 03:53:56,248 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:56,249 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:56,250 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:56,250 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:56,250 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:56,268 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:56,370 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 03:53:56,370 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:56,370 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:53:56,370 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:56,371 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:53:56,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:53:56,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:53:56,371 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 5 states. [2018-01-25 03:53:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:56,572 INFO L93 Difference]: Finished difference Result 182 states and 186 transitions. [2018-01-25 03:53:56,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:53:56,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-25 03:53:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:56,574 INFO L225 Difference]: With dead ends: 182 [2018-01-25 03:53:56,574 INFO L226 Difference]: Without dead ends: 166 [2018-01-25 03:53:56,574 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 03:53:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-25 03:53:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 131. [2018-01-25 03:53:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-25 03:53:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2018-01-25 03:53:56,586 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 14 [2018-01-25 03:53:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:56,587 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2018-01-25 03:53:56,587 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:53:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2018-01-25 03:53:56,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:53:56,588 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:56,588 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 03:53:56,588 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash -444857017, now seen corresponding path program 1 times [2018-01-25 03:53:56,589 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:56,590 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:56,590 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:56,590 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:56,590 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:56,614 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:56,688 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 03:53:56,688 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:56,688 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:53:56,689 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:56,689 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:53:56,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:53:56,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:53:56,690 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 5 states. [2018-01-25 03:53:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:56,862 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2018-01-25 03:53:56,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:53:56,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 03:53:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:56,864 INFO L225 Difference]: With dead ends: 131 [2018-01-25 03:53:56,864 INFO L226 Difference]: Without dead ends: 130 [2018-01-25 03:53:56,865 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 03:53:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-25 03:53:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-01-25 03:53:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-25 03:53:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2018-01-25 03:53:56,877 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 18 [2018-01-25 03:53:56,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:56,877 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2018-01-25 03:53:56,877 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:53:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2018-01-25 03:53:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:53:56,878 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:56,879 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 03:53:56,879 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:56,879 INFO L82 PathProgramCache]: Analyzing trace with hash -444857018, now seen corresponding path program 1 times [2018-01-25 03:53:56,879 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:56,880 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:56,880 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:56,880 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:56,880 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:56,897 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:56,948 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 03:53:56,950 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:56,950 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:53:56,950 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:56,951 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:53:56,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:53:56,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:53:56,952 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand 5 states. [2018-01-25 03:53:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:57,106 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2018-01-25 03:53:57,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:53:57,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 03:53:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:57,108 INFO L225 Difference]: With dead ends: 132 [2018-01-25 03:53:57,108 INFO L226 Difference]: Without dead ends: 131 [2018-01-25 03:53:57,109 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 03:53:57,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-25 03:53:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2018-01-25 03:53:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-01-25 03:53:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2018-01-25 03:53:57,119 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 18 [2018-01-25 03:53:57,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:57,119 INFO L432 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2018-01-25 03:53:57,120 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:53:57,120 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2018-01-25 03:53:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:53:57,120 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:57,121 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 03:53:57,121 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash -418196060, now seen corresponding path program 1 times [2018-01-25 03:53:57,121 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:57,122 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,122 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:57,122 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,122 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:57,134 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:57,186 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 03:53:57,187 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:57,187 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:53:57,187 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:57,187 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:53:57,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:53:57,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:53:57,188 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand 6 states. [2018-01-25 03:53:57,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:57,408 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2018-01-25 03:53:57,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:53:57,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 03:53:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:57,411 INFO L225 Difference]: With dead ends: 189 [2018-01-25 03:53:57,411 INFO L226 Difference]: Without dead ends: 188 [2018-01-25 03:53:57,411 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 03:53:57,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-01-25 03:53:57,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 128. [2018-01-25 03:53:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-01-25 03:53:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2018-01-25 03:53:57,422 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 18 [2018-01-25 03:53:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:57,423 INFO L432 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2018-01-25 03:53:57,423 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:53:57,423 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2018-01-25 03:53:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 03:53:57,424 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:57,424 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 03:53:57,424 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:57,424 INFO L82 PathProgramCache]: Analyzing trace with hash -418196059, now seen corresponding path program 1 times [2018-01-25 03:53:57,424 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:57,425 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,425 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:57,426 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,426 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:57,439 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:57,502 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 03:53:57,502 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:57,502 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:53:57,502 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:57,503 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:53:57,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:53:57,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:53:57,504 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 6 states. [2018-01-25 03:53:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:57,750 INFO L93 Difference]: Finished difference Result 216 states and 230 transitions. [2018-01-25 03:53:57,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:53:57,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 03:53:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:57,752 INFO L225 Difference]: With dead ends: 216 [2018-01-25 03:53:57,752 INFO L226 Difference]: Without dead ends: 210 [2018-01-25 03:53:57,752 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:53:57,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-25 03:53:57,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 112. [2018-01-25 03:53:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-01-25 03:53:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 119 transitions. [2018-01-25 03:53:57,759 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 119 transitions. Word has length 18 [2018-01-25 03:53:57,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:57,760 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 119 transitions. [2018-01-25 03:53:57,760 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:53:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 119 transitions. [2018-01-25 03:53:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 03:53:57,761 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:57,761 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:57,761 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:57,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1163379848, now seen corresponding path program 1 times [2018-01-25 03:53:57,761 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:57,762 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,762 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:57,762 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:57,762 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:57,787 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:57,915 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 03:53:57,915 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:57,915 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:53:57,915 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:57,916 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 03:53:57,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 03:53:57,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:53:57,917 INFO L87 Difference]: Start difference. First operand 112 states and 119 transitions. Second operand 11 states. [2018-01-25 03:53:58,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:58,398 INFO L93 Difference]: Finished difference Result 197 states and 204 transitions. [2018-01-25 03:53:58,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-25 03:53:58,399 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2018-01-25 03:53:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:58,400 INFO L225 Difference]: With dead ends: 197 [2018-01-25 03:53:58,401 INFO L226 Difference]: Without dead ends: 196 [2018-01-25 03:53:58,401 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2018-01-25 03:53:58,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-01-25 03:53:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 135. [2018-01-25 03:53:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-25 03:53:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2018-01-25 03:53:58,413 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 33 [2018-01-25 03:53:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:58,414 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2018-01-25 03:53:58,414 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 03:53:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2018-01-25 03:53:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 03:53:58,415 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:58,415 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:58,415 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:58,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1163379847, now seen corresponding path program 1 times [2018-01-25 03:53:58,416 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:58,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:58,417 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:58,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:58,417 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:58,437 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:58,668 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 03:53:58,669 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:53:58,669 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:53:58,669 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:53:58,670 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-25 03:53:58,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-25 03:53:58,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:53:58,670 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand 11 states. [2018-01-25 03:53:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:53:59,241 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2018-01-25 03:53:59,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-25 03:53:59,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2018-01-25 03:53:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:53:59,242 INFO L225 Difference]: With dead ends: 227 [2018-01-25 03:53:59,242 INFO L226 Difference]: Without dead ends: 226 [2018-01-25 03:53:59,243 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-01-25 03:53:59,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-25 03:53:59,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 135. [2018-01-25 03:53:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-25 03:53:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2018-01-25 03:53:59,254 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 33 [2018-01-25 03:53:59,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:53:59,254 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2018-01-25 03:53:59,254 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-25 03:53:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2018-01-25 03:53:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 03:53:59,256 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:53:59,256 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:53:59,256 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr44EnsuresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:53:59,256 INFO L82 PathProgramCache]: Analyzing trace with hash 713889595, now seen corresponding path program 1 times [2018-01-25 03:53:59,257 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:53:59,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:59,258 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:53:59,258 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:53:59,258 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:53:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:53:59,274 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:53:59,464 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 03:53:59,464 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:53:59,464 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:53:59,465 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2018-01-25 03:53:59,467 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [14], [17], [52], [55], [56], [59], [62], [65], [69], [74], [78], [86], [88], [89], [95], [99], [100], [107], [111], [117], [120], [226], [227], [231], [232], [233] [2018-01-25 03:53:59,513 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:53:59,513 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