java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:20:11,617 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:20:11,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:20:11,634 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:20:11,635 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:20:11,636 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:20:11,637 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:20:11,639 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:20:11,641 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:20:11,642 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:20:11,643 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:20:11,643 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:20:11,644 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:20:11,645 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:20:11,646 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:20:11,649 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:20:11,651 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:20:11,653 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:20:11,655 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:20:11,656 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:20:11,659 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:20:11,659 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:20:11,659 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:20:11,660 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:20:11,661 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:20:11,663 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:20:11,663 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:20:11,664 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:20:11,664 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:20:11,664 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:20:11,665 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:20:11,665 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-25 00:20:11,674 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:20:11,674 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:20:11,675 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:20:11,675 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:20:11,675 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:20:11,675 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:20:11,675 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:20:11,676 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:20:11,676 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:20:11,676 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:20:11,676 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:20:11,677 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:20:11,677 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:20:11,677 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:20:11,677 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:20:11,677 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:20:11,677 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:20:11,677 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:20:11,678 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:20:11,678 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:20:11,678 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:20:11,678 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:20:11,678 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:20:11,678 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:20:11,679 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:20:11,679 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:20:11,679 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:20:11,679 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:20:11,679 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:20:11,680 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:20:11,680 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:20:11,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:20:11,680 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:20:11,680 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:20:11,681 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:20:11,681 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:20:11,715 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:20:11,727 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:20:11,730 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:20:11,731 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:20:11,732 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:20:11,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:20:11,902 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:20:11,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:20:11,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:20:11,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:20:11,913 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:20:11,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:20:11" (1/1) ... [2018-01-25 00:20:11,917 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 12:20:11, skipping insertion in model container [2018-01-25 00:20:11,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:20:11" (1/1) ... [2018-01-25 00:20:11,932 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:20:11,974 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:20:12,112 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:20:12,137 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:20:12,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:12 WrapperNode [2018-01-25 00:20:12,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:20:12,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:20:12,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:20:12,149 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:20:12,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:12" (1/1) ... [2018-01-25 00:20:12,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:12" (1/1) ... [2018-01-25 00:20:12,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:12" (1/1) ... [2018-01-25 00:20:12,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:12" (1/1) ... [2018-01-25 00:20:12,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:12" (1/1) ... [2018-01-25 00:20:12,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:12" (1/1) ... [2018-01-25 00:20:12,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:12" (1/1) ... [2018-01-25 00:20:12,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:20:12,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:20:12,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:20:12,194 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:20:12,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:12" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:20:12,246 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:20:12,247 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:20:12,247 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:20:12,247 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:20:12,247 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:20:12,247 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:20:12,247 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:20:12,247 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:20:12,247 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:20:12,247 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:20:12,247 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:20:12,248 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:20:12,248 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:20:12,248 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:20:12,248 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:20:12,248 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:20:12,248 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:20:12,877 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:20:12,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:20:12 BoogieIcfgContainer [2018-01-25 00:20:12,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:20:12,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:20:12,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:20:12,882 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:20:12,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:20:11" (1/3) ... [2018-01-25 00:20:12,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9a1fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:20:12, skipping insertion in model container [2018-01-25 00:20:12,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:20:12" (2/3) ... [2018-01-25 00:20:12,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9a1fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:20:12, skipping insertion in model container [2018-01-25 00:20:12,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:20:12" (3/3) ... [2018-01-25 00:20:12,886 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:20:12,896 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:20:12,903 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 69 error locations. [2018-01-25 00:20:12,955 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:20:12,955 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:20:12,955 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:20:12,955 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:20:12,955 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:20:12,956 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:20:12,956 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:20:12,956 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:20:12,957 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:20:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2018-01-25 00:20:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:20:12,983 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:12,984 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:12,984 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:12,988 INFO L82 PathProgramCache]: Analyzing trace with hash 115964591, now seen corresponding path program 1 times [2018-01-25 00:20:12,990 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:13,040 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:13,040 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:13,040 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:13,040 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:13,088 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:13,153 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:13,154 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:20:13,154 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:13,157 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:20:13,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:20:13,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:20:13,256 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 4 states. [2018-01-25 00:20:13,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:13,537 INFO L93 Difference]: Finished difference Result 320 states and 382 transitions. [2018-01-25 00:20:13,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:20:13,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:20:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:13,549 INFO L225 Difference]: With dead ends: 320 [2018-01-25 00:20:13,549 INFO L226 Difference]: Without dead ends: 179 [2018-01-25 00:20:13,553 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:13,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-25 00:20:13,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 160. [2018-01-25 00:20:13,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-01-25 00:20:13,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 167 transitions. [2018-01-25 00:20:13,593 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 167 transitions. Word has length 8 [2018-01-25 00:20:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:13,594 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 167 transitions. [2018-01-25 00:20:13,594 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:20:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 167 transitions. [2018-01-25 00:20:13,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:20:13,594 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:13,594 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:13,595 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:13,595 INFO L82 PathProgramCache]: Analyzing trace with hash 115964592, now seen corresponding path program 1 times [2018-01-25 00:20:13,595 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:13,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:13,597 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:13,597 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:13,597 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:13,613 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:13,674 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:13,674 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:20:13,675 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:13,676 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:20:13,676 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:20:13,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:20:13,677 INFO L87 Difference]: Start difference. First operand 160 states and 167 transitions. Second operand 4 states. [2018-01-25 00:20:13,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:13,860 INFO L93 Difference]: Finished difference Result 160 states and 167 transitions. [2018-01-25 00:20:13,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:20:13,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:20:13,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:13,862 INFO L225 Difference]: With dead ends: 160 [2018-01-25 00:20:13,863 INFO L226 Difference]: Without dead ends: 156 [2018-01-25 00:20:13,864 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:13,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-25 00:20:13,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-01-25 00:20:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-25 00:20:13,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 162 transitions. [2018-01-25 00:20:13,876 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 162 transitions. Word has length 8 [2018-01-25 00:20:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:13,877 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 162 transitions. [2018-01-25 00:20:13,877 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:20:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 162 transitions. [2018-01-25 00:20:13,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 00:20:13,877 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:13,878 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:13,878 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:13,878 INFO L82 PathProgramCache]: Analyzing trace with hash 992494940, now seen corresponding path program 1 times [2018-01-25 00:20:13,878 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:13,880 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:13,880 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:13,880 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:13,881 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:13,900 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:13,939 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:13,939 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:20:13,939 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:13,939 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:20:13,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:20:13,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:20:13,940 INFO L87 Difference]: Start difference. First operand 156 states and 162 transitions. Second operand 4 states. [2018-01-25 00:20:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:14,075 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2018-01-25 00:20:14,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:20:14,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-25 00:20:14,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:14,077 INFO L225 Difference]: With dead ends: 170 [2018-01-25 00:20:14,077 INFO L226 Difference]: Without dead ends: 162 [2018-01-25 00:20:14,077 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-25 00:20:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 150. [2018-01-25 00:20:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 00:20:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 157 transitions. [2018-01-25 00:20:14,086 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 157 transitions. Word has length 13 [2018-01-25 00:20:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:14,086 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 157 transitions. [2018-01-25 00:20:14,086 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:20:14,087 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 157 transitions. [2018-01-25 00:20:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 00:20:14,087 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:14,087 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:14,088 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:14,088 INFO L82 PathProgramCache]: Analyzing trace with hash 992494941, now seen corresponding path program 1 times [2018-01-25 00:20:14,088 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:14,089 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:14,090 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:14,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:14,090 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:14,114 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:14,172 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:14,172 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:20:14,173 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:14,173 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:20:14,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:20:14,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:20:14,174 INFO L87 Difference]: Start difference. First operand 150 states and 157 transitions. Second operand 4 states. [2018-01-25 00:20:14,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:14,317 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2018-01-25 00:20:14,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:20:14,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-25 00:20:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:14,320 INFO L225 Difference]: With dead ends: 170 [2018-01-25 00:20:14,320 INFO L226 Difference]: Without dead ends: 162 [2018-01-25 00:20:14,320 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-25 00:20:14,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2018-01-25 00:20:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-25 00:20:14,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 161 transitions. [2018-01-25 00:20:14,333 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 161 transitions. Word has length 13 [2018-01-25 00:20:14,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:14,334 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 161 transitions. [2018-01-25 00:20:14,334 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:20:14,334 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 161 transitions. [2018-01-25 00:20:14,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 00:20:14,335 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:14,335 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:14,335 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:14,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1268132201, now seen corresponding path program 1 times [2018-01-25 00:20:14,336 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:14,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:14,338 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:14,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:14,338 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:14,365 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:14,451 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:14,451 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:20:14,452 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:14,457 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:20:14,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:20:14,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:20:14,458 INFO L87 Difference]: Start difference. First operand 154 states and 161 transitions. Second operand 4 states. [2018-01-25 00:20:14,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:14,597 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2018-01-25 00:20:14,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:20:14,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-25 00:20:14,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:14,598 INFO L225 Difference]: With dead ends: 168 [2018-01-25 00:20:14,598 INFO L226 Difference]: Without dead ends: 152 [2018-01-25 00:20:14,599 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:14,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-25 00:20:14,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2018-01-25 00:20:14,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-01-25 00:20:14,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2018-01-25 00:20:14,606 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 21 [2018-01-25 00:20:14,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:14,607 INFO L432 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2018-01-25 00:20:14,607 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:20:14,607 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2018-01-25 00:20:14,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 00:20:14,608 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:14,608 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:14,608 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:14,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1268132202, now seen corresponding path program 1 times [2018-01-25 00:20:14,608 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:14,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:14,610 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:14,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:14,610 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:14,629 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:14,730 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:14,730 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:20:14,731 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:14,731 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:20:14,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:20:14,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:20:14,732 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand 7 states. [2018-01-25 00:20:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:15,073 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2018-01-25 00:20:15,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:20:15,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-01-25 00:20:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:15,074 INFO L225 Difference]: With dead ends: 186 [2018-01-25 00:20:15,074 INFO L226 Difference]: Without dead ends: 179 [2018-01-25 00:20:15,075 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-01-25 00:20:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-25 00:20:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 153. [2018-01-25 00:20:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-25 00:20:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2018-01-25 00:20:15,083 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 21 [2018-01-25 00:20:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:15,083 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2018-01-25 00:20:15,083 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:20:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2018-01-25 00:20:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 00:20:15,084 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:15,085 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] [2018-01-25 00:20:15,085 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:15,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1095666644, now seen corresponding path program 1 times [2018-01-25 00:20:15,085 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:15,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:15,087 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:15,087 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:15,087 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:15,103 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:15,151 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:15,151 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:20:15,151 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:15,151 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:20:15,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:20:15,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:15,152 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand 5 states. [2018-01-25 00:20:15,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:15,315 INFO L93 Difference]: Finished difference Result 199 states and 217 transitions. [2018-01-25 00:20:15,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:20:15,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-25 00:20:15,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:15,317 INFO L225 Difference]: With dead ends: 199 [2018-01-25 00:20:15,317 INFO L226 Difference]: Without dead ends: 198 [2018-01-25 00:20:15,317 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:20:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-01-25 00:20:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 152. [2018-01-25 00:20:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-25 00:20:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 163 transitions. [2018-01-25 00:20:15,324 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 163 transitions. Word has length 23 [2018-01-25 00:20:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:15,324 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 163 transitions. [2018-01-25 00:20:15,324 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:20:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 163 transitions. [2018-01-25 00:20:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 00:20:15,325 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:15,325 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] [2018-01-25 00:20:15,326 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:15,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1095666643, now seen corresponding path program 1 times [2018-01-25 00:20:15,326 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:15,327 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:15,327 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:15,327 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:15,328 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:15,343 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:15,421 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:15,421 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:20:15,421 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:15,421 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:20:15,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:20:15,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:15,422 INFO L87 Difference]: Start difference. First operand 152 states and 163 transitions. Second operand 5 states. [2018-01-25 00:20:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:15,623 INFO L93 Difference]: Finished difference Result 226 states and 244 transitions. [2018-01-25 00:20:15,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:20:15,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-25 00:20:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:15,624 INFO L225 Difference]: With dead ends: 226 [2018-01-25 00:20:15,624 INFO L226 Difference]: Without dead ends: 225 [2018-01-25 00:20:15,625 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 00:20:15,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-01-25 00:20:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 151. [2018-01-25 00:20:15,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-25 00:20:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 161 transitions. [2018-01-25 00:20:15,631 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 161 transitions. Word has length 23 [2018-01-25 00:20:15,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:15,632 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 161 transitions. [2018-01-25 00:20:15,632 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:20:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 161 transitions. [2018-01-25 00:20:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 00:20:15,632 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:15,633 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] [2018-01-25 00:20:15,633 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:15,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1665799662, now seen corresponding path program 1 times [2018-01-25 00:20:15,633 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:15,634 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:15,634 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:15,634 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:15,634 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:15,651 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:15,786 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:15,786 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:20:15,786 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:15,786 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 00:20:15,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 00:20:15,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:20:15,787 INFO L87 Difference]: Start difference. First operand 151 states and 161 transitions. Second operand 9 states. [2018-01-25 00:20:16,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:16,514 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions. [2018-01-25 00:20:16,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:20:16,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-01-25 00:20:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:16,515 INFO L225 Difference]: With dead ends: 160 [2018-01-25 00:20:16,516 INFO L226 Difference]: Without dead ends: 159 [2018-01-25 00:20:16,516 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-25 00:20:16,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-25 00:20:16,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 150. [2018-01-25 00:20:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 00:20:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 160 transitions. [2018-01-25 00:20:16,522 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 160 transitions. Word has length 27 [2018-01-25 00:20:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:16,523 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 160 transitions. [2018-01-25 00:20:16,523 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 00:20:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 160 transitions. [2018-01-25 00:20:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 00:20:16,524 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:16,524 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] [2018-01-25 00:20:16,524 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:16,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1665799663, now seen corresponding path program 1 times [2018-01-25 00:20:16,524 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:16,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:16,526 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:16,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:16,526 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:16,541 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:16,709 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:16,755 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 00:20:16,755 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:16,755 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 00:20:16,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 00:20:16,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:20:16,756 INFO L87 Difference]: Start difference. First operand 150 states and 160 transitions. Second operand 10 states. [2018-01-25 00:20:17,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:17,480 INFO L93 Difference]: Finished difference Result 186 states and 199 transitions. [2018-01-25 00:20:17,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 00:20:17,480 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2018-01-25 00:20:17,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:17,481 INFO L225 Difference]: With dead ends: 186 [2018-01-25 00:20:17,482 INFO L226 Difference]: Without dead ends: 175 [2018-01-25 00:20:17,482 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-25 00:20:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-25 00:20:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 155. [2018-01-25 00:20:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-25 00:20:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2018-01-25 00:20:17,490 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 27 [2018-01-25 00:20:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:17,490 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2018-01-25 00:20:17,490 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 00:20:17,491 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2018-01-25 00:20:17,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:20:17,492 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:17,492 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] [2018-01-25 00:20:17,492 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash 37442029, now seen corresponding path program 1 times [2018-01-25 00:20:17,493 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:17,494 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:17,494 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:17,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:17,495 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:17,512 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:17,557 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:17,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:20:17,557 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:17,557 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:20:17,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:20:17,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:17,558 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 5 states. [2018-01-25 00:20:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:17,717 INFO L93 Difference]: Finished difference Result 228 states and 246 transitions. [2018-01-25 00:20:17,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:20:17,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-25 00:20:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:17,719 INFO L225 Difference]: With dead ends: 228 [2018-01-25 00:20:17,719 INFO L226 Difference]: Without dead ends: 227 [2018-01-25 00:20:17,719 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:20:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-25 00:20:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 154. [2018-01-25 00:20:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-25 00:20:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2018-01-25 00:20:17,724 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 34 [2018-01-25 00:20:17,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:17,725 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2018-01-25 00:20:17,725 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:20:17,725 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2018-01-25 00:20:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:20:17,726 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:17,726 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] [2018-01-25 00:20:17,726 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:17,726 INFO L82 PathProgramCache]: Analyzing trace with hash 37442030, now seen corresponding path program 1 times [2018-01-25 00:20:17,727 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:17,728 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:17,728 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:17,728 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:17,728 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:17,742 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:17,819 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:17,819 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:20:17,820 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:17,820 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:20:17,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:20:17,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:20:17,821 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand 5 states. [2018-01-25 00:20:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:18,037 INFO L93 Difference]: Finished difference Result 255 states and 274 transitions. [2018-01-25 00:20:18,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:20:18,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-25 00:20:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:18,039 INFO L225 Difference]: With dead ends: 255 [2018-01-25 00:20:18,039 INFO L226 Difference]: Without dead ends: 254 [2018-01-25 00:20:18,039 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 00:20:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-01-25 00:20:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 153. [2018-01-25 00:20:18,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-25 00:20:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 163 transitions. [2018-01-25 00:20:18,045 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 163 transitions. Word has length 34 [2018-01-25 00:20:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:18,045 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 163 transitions. [2018-01-25 00:20:18,045 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:20:18,045 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 163 transitions. [2018-01-25 00:20:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:20:18,046 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:18,046 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] [2018-01-25 00:20:18,046 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:18,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1696437201, now seen corresponding path program 1 times [2018-01-25 00:20:18,047 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:18,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:18,048 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:18,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:18,048 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:18,059 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:18,172 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:20:18,172 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:20:18,172 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:20:18,172 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 00:20:18,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 00:20:18,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:20:18,172 INFO L87 Difference]: Start difference. First operand 153 states and 163 transitions. Second operand 8 states. [2018-01-25 00:20:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:20:18,351 INFO L93 Difference]: Finished difference Result 222 states and 237 transitions. [2018-01-25 00:20:18,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:20:18,352 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-01-25 00:20:18,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:20:18,353 INFO L225 Difference]: With dead ends: 222 [2018-01-25 00:20:18,353 INFO L226 Difference]: Without dead ends: 183 [2018-01-25 00:20:18,353 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-01-25 00:20:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-25 00:20:18,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2018-01-25 00:20:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-25 00:20:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 162 transitions. [2018-01-25 00:20:18,360 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 162 transitions. Word has length 34 [2018-01-25 00:20:18,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:20:18,360 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 162 transitions. [2018-01-25 00:20:18,360 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 00:20:18,360 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 162 transitions. [2018-01-25 00:20:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-25 00:20:18,361 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:20:18,362 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:20:18,362 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:20:18,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1185742895, now seen corresponding path program 1 times [2018-01-25 00:20:18,362 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:20:18,363 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:18,363 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:20:18,364 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:20:18,364 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:20:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:20:18,376 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:20:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:20:18,495 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:20:18,495 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:20:18,496 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-01-25 00:20:18,498 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [12], [13], [16], [19], [22], [26], [28], [31], [146], [150], [155], [159], [167], [168], [175], [179], [187], [193], [194], [195], [243], [245], [248], [301], [302], [306], [307], [308] [2018-01-25 00:20:18,553 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:20:18,553 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