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-01_false-unreach-call_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:54:56,786 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:54:56,788 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:54:56,803 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:54:56,803 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:54:56,804 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:54:56,805 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:54:56,807 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:54:56,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:54:56,810 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:54:56,811 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:54:56,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:54:56,812 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:54:56,813 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:54:56,814 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:54:56,817 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:54:56,819 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:54:56,821 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:54:56,822 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:54:56,823 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:54:56,826 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:54:56,826 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:54:56,826 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:54:56,827 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:54:56,828 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:54:56,830 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:54:56,830 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:54:56,830 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:54:56,831 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:54:56,831 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:54:56,832 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:54:56,832 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 03:54:56,840 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:54:56,840 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:54:56,841 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:54:56,841 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:54:56,841 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:54:56,842 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:54:56,842 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:54:56,842 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:54:56,842 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:54:56,842 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:54:56,842 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:54:56,842 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:54:56,843 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:54:56,843 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:54:56,843 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:54:56,843 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:54:56,843 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:54:56,843 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:54:56,843 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:54:56,843 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:54:56,844 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:54:56,844 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:54:56,844 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:54:56,844 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:54:56,844 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:54:56,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:54:56,845 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:54:56,845 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:54:56,845 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:54:56,845 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:54:56,845 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:54:56,845 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:54:56,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:54:56,846 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:54:56,846 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:54:56,846 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:54:56,846 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:54:56,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:54:56,888 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:54:56,892 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:54:56,894 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:54:56,894 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:54:56,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01_false-unreach-call_false-valid-deref.i [2018-01-25 03:54:57,132 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:54:57,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:54:57,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:54:57,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:54:57,141 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:54:57,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:54:57" (1/1) ... [2018-01-25 03:54:57,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ea857c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57, skipping insertion in model container [2018-01-25 03:54:57,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:54:57" (1/1) ... [2018-01-25 03:54:57,157 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:54:57,198 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:54:57,323 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:54:57,352 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:54:57,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57 WrapperNode [2018-01-25 03:54:57,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:54:57,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:54:57,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:54:57,365 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:54:57,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57" (1/1) ... [2018-01-25 03:54:57,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57" (1/1) ... [2018-01-25 03:54:57,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57" (1/1) ... [2018-01-25 03:54:57,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57" (1/1) ... [2018-01-25 03:54:57,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57" (1/1) ... [2018-01-25 03:54:57,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57" (1/1) ... [2018-01-25 03:54:57,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57" (1/1) ... [2018-01-25 03:54:57,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:54:57,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:54:57,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:54:57,409 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:54:57,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57" (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 03:54:57,459 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:54:57,459 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:54:57,459 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:54:57,459 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:54:57,459 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:54:57,459 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:54:57,459 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:54:57,460 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:54:57,460 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:54:57,460 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:54:57,460 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:54:57,460 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 03:54:57,460 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:54:57,460 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:54:57,460 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:54:58,031 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:54:58,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:54:58 BoogieIcfgContainer [2018-01-25 03:54:58,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:54:58,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:54:58,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:54:58,036 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:54:58,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:54:57" (1/3) ... [2018-01-25 03:54:58,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6351cdd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:54:58, skipping insertion in model container [2018-01-25 03:54:58,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:54:57" (2/3) ... [2018-01-25 03:54:58,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6351cdd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:54:58, skipping insertion in model container [2018-01-25 03:54:58,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:54:58" (3/3) ... [2018-01-25 03:54:58,040 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-01_false-unreach-call_false-valid-deref.i [2018-01-25 03:54:58,050 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:54:58,059 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2018-01-25 03:54:58,114 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:54:58,114 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:54:58,114 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:54:58,114 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:54:58,114 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:54:58,115 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:54:58,115 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:54:58,115 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:54:58,116 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:54:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2018-01-25 03:54:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:54:58,147 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:58,148 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:58,148 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:54:58,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2039196070, now seen corresponding path program 1 times [2018-01-25 03:54:58,156 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:58,199 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:58,199 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:58,199 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:58,199 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:58,245 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:58,305 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 03:54:58,307 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:58,307 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:54:58,307 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:58,310 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:54:58,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:54:58,321 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:54:58,324 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 4 states. [2018-01-25 03:54:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:58,630 INFO L93 Difference]: Finished difference Result 394 states and 523 transitions. [2018-01-25 03:54:58,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:54:58,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:54:58,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:58,645 INFO L225 Difference]: With dead ends: 394 [2018-01-25 03:54:58,645 INFO L226 Difference]: Without dead ends: 211 [2018-01-25 03:54:58,650 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 03:54:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-25 03:54:58,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 181. [2018-01-25 03:54:58,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-25 03:54:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 194 transitions. [2018-01-25 03:54:58,701 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 194 transitions. Word has length 8 [2018-01-25 03:54:58,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:58,701 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 194 transitions. [2018-01-25 03:54:58,701 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:54:58,701 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 194 transitions. [2018-01-25 03:54:58,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 03:54:58,702 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:58,702 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:58,702 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:54:58,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2039196071, now seen corresponding path program 1 times [2018-01-25 03:54:58,703 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:58,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:58,704 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:58,704 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:58,704 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:58,724 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:58,783 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 03:54:58,783 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:58,784 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 03:54:58,784 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:58,785 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:54:58,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:54:58,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:54:58,786 INFO L87 Difference]: Start difference. First operand 181 states and 194 transitions. Second operand 4 states. [2018-01-25 03:54:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:58,986 INFO L93 Difference]: Finished difference Result 214 states and 227 transitions. [2018-01-25 03:54:58,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:54:58,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 03:54:58,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:58,989 INFO L225 Difference]: With dead ends: 214 [2018-01-25 03:54:58,989 INFO L226 Difference]: Without dead ends: 204 [2018-01-25 03:54:58,990 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 03:54:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-25 03:54:59,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 193. [2018-01-25 03:54:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-25 03:54:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2018-01-25 03:54:59,005 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 8 [2018-01-25 03:54:59,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:59,006 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2018-01-25 03:54:59,006 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:54:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2018-01-25 03:54:59,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:54:59,007 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:59,007 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:59,007 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:54:59,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1799051431, now seen corresponding path program 1 times [2018-01-25 03:54:59,007 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:59,008 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:59,009 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:59,009 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:59,009 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:59,025 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:59,066 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 03:54:59,066 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:59,066 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:54:59,066 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:59,067 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:54:59,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:54:59,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:54:59,067 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand 5 states. [2018-01-25 03:54:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:59,415 INFO L93 Difference]: Finished difference Result 330 states and 359 transitions. [2018-01-25 03:54:59,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:54:59,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 03:54:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:59,475 INFO L225 Difference]: With dead ends: 330 [2018-01-25 03:54:59,475 INFO L226 Difference]: Without dead ends: 329 [2018-01-25 03:54:59,476 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 03:54:59,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-25 03:54:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 192. [2018-01-25 03:54:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-25 03:54:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 212 transitions. [2018-01-25 03:54:59,492 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 212 transitions. Word has length 17 [2018-01-25 03:54:59,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:59,493 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 212 transitions. [2018-01-25 03:54:59,493 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:54:59,493 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 212 transitions. [2018-01-25 03:54:59,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:54:59,494 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:59,494 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:54:59,494 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:54:59,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1799051430, now seen corresponding path program 1 times [2018-01-25 03:54:59,495 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:59,496 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:59,496 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:59,496 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:59,496 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:59,513 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:54:59,575 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 03:54:59,576 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:54:59,576 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:54:59,576 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:54:59,576 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:54:59,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:54:59,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:54:59,577 INFO L87 Difference]: Start difference. First operand 192 states and 212 transitions. Second operand 5 states. [2018-01-25 03:54:59,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:54:59,889 INFO L93 Difference]: Finished difference Result 359 states and 398 transitions. [2018-01-25 03:54:59,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:54:59,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-25 03:54:59,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:54:59,892 INFO L225 Difference]: With dead ends: 359 [2018-01-25 03:54:59,892 INFO L226 Difference]: Without dead ends: 358 [2018-01-25 03:54:59,892 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 03:54:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-01-25 03:54:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 191. [2018-01-25 03:54:59,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-25 03:54:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2018-01-25 03:54:59,905 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 17 [2018-01-25 03:54:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:54:59,906 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2018-01-25 03:54:59,906 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:54:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2018-01-25 03:54:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 03:54:59,906 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:54:59,907 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] [2018-01-25 03:54:59,907 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:54:59,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1355722779, now seen corresponding path program 1 times [2018-01-25 03:54:59,907 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:54:59,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:59,908 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:54:59,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:54:59,908 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:54:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:54:59,926 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:00,056 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 03:55:00,056 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:00,056 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:55:00,057 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:00,057 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 03:55:00,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 03:55:00,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:55:00,058 INFO L87 Difference]: Start difference. First operand 191 states and 211 transitions. Second operand 8 states. [2018-01-25 03:55:00,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:00,919 INFO L93 Difference]: Finished difference Result 333 states and 360 transitions. [2018-01-25 03:55:00,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:55:00,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-25 03:55:00,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:00,922 INFO L225 Difference]: With dead ends: 333 [2018-01-25 03:55:00,922 INFO L226 Difference]: Without dead ends: 332 [2018-01-25 03:55:00,923 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-25 03:55:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-01-25 03:55:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 190. [2018-01-25 03:55:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-25 03:55:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 210 transitions. [2018-01-25 03:55:00,946 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 210 transitions. Word has length 20 [2018-01-25 03:55:00,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:00,946 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 210 transitions. [2018-01-25 03:55:00,946 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 03:55:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 210 transitions. [2018-01-25 03:55:00,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-25 03:55:00,947 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:00,947 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] [2018-01-25 03:55:00,947 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:00,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1355722780, now seen corresponding path program 1 times [2018-01-25 03:55:00,948 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:00,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:00,952 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:00,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:00,952 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:00,970 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:01,148 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 03:55:01,148 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:01,148 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:55:01,149 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:01,149 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 03:55:01,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 03:55:01,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:55:01,149 INFO L87 Difference]: Start difference. First operand 190 states and 210 transitions. Second operand 8 states. [2018-01-25 03:55:01,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:01,803 INFO L93 Difference]: Finished difference Result 335 states and 362 transitions. [2018-01-25 03:55:01,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:55:01,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-25 03:55:01,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:01,806 INFO L225 Difference]: With dead ends: 335 [2018-01-25 03:55:01,806 INFO L226 Difference]: Without dead ends: 334 [2018-01-25 03:55:01,807 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-25 03:55:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-01-25 03:55:01,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 189. [2018-01-25 03:55:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-25 03:55:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 209 transitions. [2018-01-25 03:55:01,818 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 209 transitions. Word has length 20 [2018-01-25 03:55:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:01,819 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 209 transitions. [2018-01-25 03:55:01,819 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 03:55:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 209 transitions. [2018-01-25 03:55:01,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 03:55:01,820 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:01,820 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] [2018-01-25 03:55:01,820 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:01,820 INFO L82 PathProgramCache]: Analyzing trace with hash -778525244, now seen corresponding path program 1 times [2018-01-25 03:55:01,820 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:01,821 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:01,822 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:01,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:01,822 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:01,834 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:01,877 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 03:55:01,877 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:01,877 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:55:01,877 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:01,878 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:55:01,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:55:01,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:55:01,878 INFO L87 Difference]: Start difference. First operand 189 states and 209 transitions. Second operand 5 states. [2018-01-25 03:55:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:02,008 INFO L93 Difference]: Finished difference Result 443 states and 488 transitions. [2018-01-25 03:55:02,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:55:02,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-25 03:55:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:02,010 INFO L225 Difference]: With dead ends: 443 [2018-01-25 03:55:02,010 INFO L226 Difference]: Without dead ends: 282 [2018-01-25 03:55:02,012 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:55:02,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-01-25 03:55:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 193. [2018-01-25 03:55:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-25 03:55:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2018-01-25 03:55:02,025 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 26 [2018-01-25 03:55:02,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:02,025 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2018-01-25 03:55:02,025 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:55:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2018-01-25 03:55:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:55:02,027 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:02,027 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] [2018-01-25 03:55:02,027 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:02,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1814157193, now seen corresponding path program 1 times [2018-01-25 03:55:02,028 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:02,028 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:02,029 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:02,029 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:02,029 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:02,042 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:02,145 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 03:55:02,146 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:02,146 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:55:02,146 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:02,146 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:55:02,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:55:02,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:55:02,147 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand 5 states. [2018-01-25 03:55:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:02,306 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions. [2018-01-25 03:55:02,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:55:02,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-25 03:55:02,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:02,308 INFO L225 Difference]: With dead ends: 215 [2018-01-25 03:55:02,308 INFO L226 Difference]: Without dead ends: 203 [2018-01-25 03:55:02,308 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 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 03:55:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-01-25 03:55:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 185. [2018-01-25 03:55:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-25 03:55:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 205 transitions. [2018-01-25 03:55:02,318 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 205 transitions. Word has length 28 [2018-01-25 03:55:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:02,319 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 205 transitions. [2018-01-25 03:55:02,319 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:55:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 205 transitions. [2018-01-25 03:55:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:55:02,320 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:02,320 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] [2018-01-25 03:55:02,320 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:02,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1814157194, now seen corresponding path program 1 times [2018-01-25 03:55:02,320 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:02,321 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:02,321 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:02,321 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:02,321 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:02,332 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:02,520 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 03:55:02,520 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:02,520 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:55:02,520 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:02,521 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:55:02,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:55:02,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:55:02,521 INFO L87 Difference]: Start difference. First operand 185 states and 205 transitions. Second operand 7 states. [2018-01-25 03:55:02,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:02,788 INFO L93 Difference]: Finished difference Result 246 states and 263 transitions. [2018-01-25 03:55:02,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:55:02,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-25 03:55:02,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:02,789 INFO L225 Difference]: With dead ends: 246 [2018-01-25 03:55:02,789 INFO L226 Difference]: Without dead ends: 242 [2018-01-25 03:55:02,790 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:55:02,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-25 03:55:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 215. [2018-01-25 03:55:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-01-25 03:55:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 246 transitions. [2018-01-25 03:55:02,799 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 246 transitions. Word has length 28 [2018-01-25 03:55:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:02,800 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 246 transitions. [2018-01-25 03:55:02,800 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:55:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 246 transitions. [2018-01-25 03:55:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 03:55:02,801 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:02,801 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] [2018-01-25 03:55:02,801 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:02,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1983523681, now seen corresponding path program 1 times [2018-01-25 03:55:02,801 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:02,802 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:02,802 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:02,803 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:02,803 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:02,814 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:02,874 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 03:55:02,874 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:02,874 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:55:02,874 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:02,875 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:55:02,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:55:02,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:55:02,875 INFO L87 Difference]: Start difference. First operand 215 states and 246 transitions. Second operand 6 states. [2018-01-25 03:55:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:03,145 INFO L93 Difference]: Finished difference Result 312 states and 360 transitions. [2018-01-25 03:55:03,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:55:03,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-25 03:55:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:03,147 INFO L225 Difference]: With dead ends: 312 [2018-01-25 03:55:03,147 INFO L226 Difference]: Without dead ends: 311 [2018-01-25 03:55:03,147 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 03:55:03,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-25 03:55:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 214. [2018-01-25 03:55:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-01-25 03:55:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 245 transitions. [2018-01-25 03:55:03,156 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 245 transitions. Word has length 31 [2018-01-25 03:55:03,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:03,157 INFO L432 AbstractCegarLoop]: Abstraction has 214 states and 245 transitions. [2018-01-25 03:55:03,157 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:55:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 245 transitions. [2018-01-25 03:55:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 03:55:03,158 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:03,158 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] [2018-01-25 03:55:03,158 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:03,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1983523682, now seen corresponding path program 1 times [2018-01-25 03:55:03,159 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:03,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:03,160 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:03,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:03,160 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:03,171 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:03,303 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 03:55:03,304 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:03,304 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:55:03,304 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:03,304 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:55:03,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:55:03,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:55:03,304 INFO L87 Difference]: Start difference. First operand 214 states and 245 transitions. Second operand 6 states. [2018-01-25 03:55:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:03,736 INFO L93 Difference]: Finished difference Result 342 states and 398 transitions. [2018-01-25 03:55:03,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:55:03,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-25 03:55:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:03,738 INFO L225 Difference]: With dead ends: 342 [2018-01-25 03:55:03,739 INFO L226 Difference]: Without dead ends: 333 [2018-01-25 03:55:03,739 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-25 03:55:03,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-01-25 03:55:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 199. [2018-01-25 03:55:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-25 03:55:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 229 transitions. [2018-01-25 03:55:03,751 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 229 transitions. Word has length 31 [2018-01-25 03:55:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:03,751 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 229 transitions. [2018-01-25 03:55:03,752 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:55:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 229 transitions. [2018-01-25 03:55:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-25 03:55:03,753 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:03,753 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, 1, 1, 1] [2018-01-25 03:55:03,753 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:03,753 INFO L82 PathProgramCache]: Analyzing trace with hash -706076137, now seen corresponding path program 1 times [2018-01-25 03:55:03,753 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:03,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:03,754 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:03,754 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:03,755 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:03,764 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:03,799 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 03:55:03,799 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:03,799 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:55:03,799 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:03,800 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:55:03,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:55:03,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:55:03,800 INFO L87 Difference]: Start difference. First operand 199 states and 229 transitions. Second operand 5 states. [2018-01-25 03:55:03,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:03,937 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2018-01-25 03:55:03,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:55:03,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-01-25 03:55:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:03,939 INFO L225 Difference]: With dead ends: 279 [2018-01-25 03:55:03,939 INFO L226 Difference]: Without dead ends: 222 [2018-01-25 03:55:03,940 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:55:03,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-25 03:55:03,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 199. [2018-01-25 03:55:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-25 03:55:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 227 transitions. [2018-01-25 03:55:03,948 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 227 transitions. Word has length 36 [2018-01-25 03:55:03,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:03,948 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 227 transitions. [2018-01-25 03:55:03,948 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:55:03,948 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 227 transitions. [2018-01-25 03:55:03,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-25 03:55:03,950 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:03,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:55:03,950 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:03,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1650873960, now seen corresponding path program 1 times [2018-01-25 03:55:03,950 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:03,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:03,951 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:03,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:03,952 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:03,963 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:04,349 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 03:55:04,349 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:04,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-25 03:55:04,350 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:04,350 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 03:55:04,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 03:55:04,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:55:04,350 INFO L87 Difference]: Start difference. First operand 199 states and 227 transitions. Second operand 10 states. [2018-01-25 03:55:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:04,930 INFO L93 Difference]: Finished difference Result 441 states and 497 transitions. [2018-01-25 03:55:04,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-25 03:55:04,930 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-01-25 03:55:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:04,931 INFO L225 Difference]: With dead ends: 441 [2018-01-25 03:55:04,931 INFO L226 Difference]: Without dead ends: 322 [2018-01-25 03:55:04,932 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2018-01-25 03:55:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-01-25 03:55:04,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 240. [2018-01-25 03:55:04,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-01-25 03:55:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2018-01-25 03:55:04,944 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 42 [2018-01-25 03:55:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:04,944 INFO L432 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2018-01-25 03:55:04,944 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 03:55:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2018-01-25 03:55:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-25 03:55:04,946 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:04,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:55:04,946 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:04,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1611877026, now seen corresponding path program 1 times [2018-01-25 03:55:04,946 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:04,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:04,947 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:04,948 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:04,948 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:04,961 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:05,026 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 03:55:05,026 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:05,027 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:55:05,027 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:05,027 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:55:05,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:55:05,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:55:05,028 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 5 states. [2018-01-25 03:55:05,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:05,283 INFO L93 Difference]: Finished difference Result 360 states and 411 transitions. [2018-01-25 03:55:05,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:55:05,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-25 03:55:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:05,285 INFO L225 Difference]: With dead ends: 360 [2018-01-25 03:55:05,285 INFO L226 Difference]: Without dead ends: 359 [2018-01-25 03:55:05,285 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 03:55:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-25 03:55:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 239. [2018-01-25 03:55:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-01-25 03:55:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 271 transitions. [2018-01-25 03:55:05,297 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 271 transitions. Word has length 43 [2018-01-25 03:55:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:05,297 INFO L432 AbstractCegarLoop]: Abstraction has 239 states and 271 transitions. [2018-01-25 03:55:05,297 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:55:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 271 transitions. [2018-01-25 03:55:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-25 03:55:05,298 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:05,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:55:05,299 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:05,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1611877025, now seen corresponding path program 1 times [2018-01-25 03:55:05,299 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:05,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:05,300 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:05,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:05,300 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:05,310 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:05,378 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 03:55:05,378 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:55:05,379 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:55:05,379 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:55:05,379 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:55:05,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:55:05,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:55:05,380 INFO L87 Difference]: Start difference. First operand 239 states and 271 transitions. Second operand 5 states. [2018-01-25 03:55:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:55:05,848 INFO L93 Difference]: Finished difference Result 392 states and 450 transitions. [2018-01-25 03:55:05,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:55:05,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-25 03:55:05,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:55:05,849 INFO L225 Difference]: With dead ends: 392 [2018-01-25 03:55:05,850 INFO L226 Difference]: Without dead ends: 391 [2018-01-25 03:55:05,850 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 03:55:05,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-01-25 03:55:05,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 238. [2018-01-25 03:55:05,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-01-25 03:55:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 270 transitions. [2018-01-25 03:55:05,864 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 270 transitions. Word has length 43 [2018-01-25 03:55:05,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:55:05,864 INFO L432 AbstractCegarLoop]: Abstraction has 238 states and 270 transitions. [2018-01-25 03:55:05,864 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:55:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 270 transitions. [2018-01-25 03:55:05,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-25 03:55:05,865 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:55:05,866 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:55:05,866 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 03:55:05,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1934711090, now seen corresponding path program 1 times [2018-01-25 03:55:05,866 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:55:05,867 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:05,867 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:55:05,867 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:55:05,867 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:55:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:55:05,879 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:55:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:55:06,026 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:55:06,026 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:55:06,027 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-01-25 03:55:06,029 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [13], [18], [22], [28], [31], [32], [58], [59], [62], [67], [68], [71], [77], [81], [87], [91], [93], [96], [207], [211], [216], [220], [228], [234], [235], [236], [238], [242], [246], [331], [336], [340], [346], [349], [448], [449], [450] [2018-01-25 03:55:06,083 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:55:06,083 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