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_false-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:14:18,128 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:14:18,130 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:14:18,143 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:14:18,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:14:18,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:14:18,146 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:14:18,147 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:14:18,150 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:14:18,151 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:14:18,152 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:14:18,152 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:14:18,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:14:18,154 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:14:18,154 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:14:18,157 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:14:18,159 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:14:18,162 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:14:18,163 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:14:18,164 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:14:18,167 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:14:18,167 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:14:18,167 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:14:18,168 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:14:18,169 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:14:18,171 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:14:18,171 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:14:18,172 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:14:18,172 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:14:18,172 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:14:18,173 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:14:18,173 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 00:14:18,184 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:14:18,184 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:14:18,185 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:14:18,185 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:14:18,185 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:14:18,185 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:14:18,186 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:14:18,186 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:14:18,187 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:14:18,187 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:14:18,187 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:14:18,187 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:14:18,187 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:14:18,188 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:14:18,188 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:14:18,188 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:14:18,188 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:14:18,188 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:14:18,189 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:14:18,189 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:14:18,189 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:14:18,189 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:14:18,189 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:14:18,190 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:14:18,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:14:18,190 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:14:18,190 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:14:18,191 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:14:18,191 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:14:18,191 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:14:18,191 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:14:18,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:14:18,192 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:14:18,192 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:14:18,193 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:14:18,193 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:14:18,227 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:14:18,240 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:14:18,245 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:14:18,247 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:14:18,247 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:14:18,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i [2018-01-25 00:14:18,413 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:14:18,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:14:18,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:14:18,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:14:18,424 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:14:18,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:14:18" (1/1) ... [2018-01-25 00:14:18,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b6da95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18, skipping insertion in model container [2018-01-25 00:14:18,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:14:18" (1/1) ... [2018-01-25 00:14:18,440 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:14:18,482 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:14:18,613 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:14:18,633 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:14:18,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18 WrapperNode [2018-01-25 00:14:18,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:14:18,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:14:18,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:14:18,642 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:14:18,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18" (1/1) ... [2018-01-25 00:14:18,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18" (1/1) ... [2018-01-25 00:14:18,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18" (1/1) ... [2018-01-25 00:14:18,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18" (1/1) ... [2018-01-25 00:14:18,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18" (1/1) ... [2018-01-25 00:14:18,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18" (1/1) ... [2018-01-25 00:14:18,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18" (1/1) ... [2018-01-25 00:14:18,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:14:18,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:14:18,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:14:18,683 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:14:18,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18" (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 00:14:18,732 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:14:18,732 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:14:18,732 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:14:18,732 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:14:18,732 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:14:18,732 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:14:18,733 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:14:18,733 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:14:18,733 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:14:18,733 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:14:18,733 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:14:18,733 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:14:18,733 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:14:18,733 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:14:18,733 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:14:18,733 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:14:18,734 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:14:19,294 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:14:19,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:14:19 BoogieIcfgContainer [2018-01-25 00:14:19,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:14:19,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:14:19,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:14:19,299 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:14:19,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:14:18" (1/3) ... [2018-01-25 00:14:19,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b3656e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:14:19, skipping insertion in model container [2018-01-25 00:14:19,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:14:18" (2/3) ... [2018-01-25 00:14:19,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b3656e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:14:19, skipping insertion in model container [2018-01-25 00:14:19,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:14:19" (3/3) ... [2018-01-25 00:14:19,304 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i [2018-01-25 00:14:19,313 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:14:19,322 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 67 error locations. [2018-01-25 00:14:19,379 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:14:19,379 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:14:19,379 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:14:19,379 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:14:19,379 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:14:19,380 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:14:19,380 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:14:19,380 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:14:19,381 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:14:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2018-01-25 00:14:19,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:14:19,415 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:19,416 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:14:19,416 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:19,422 INFO L82 PathProgramCache]: Analyzing trace with hash 726209746, now seen corresponding path program 1 times [2018-01-25 00:14:19,424 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:19,492 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:19,493 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:19,493 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:19,493 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:19,547 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:19,614 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 00:14:19,616 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:19,616 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:14:19,616 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:19,619 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:14:19,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:14:19,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:14:19,717 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2018-01-25 00:14:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:20,006 INFO L93 Difference]: Finished difference Result 316 states and 377 transitions. [2018-01-25 00:14:20,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:14:20,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:14:20,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:20,019 INFO L225 Difference]: With dead ends: 316 [2018-01-25 00:14:20,019 INFO L226 Difference]: Without dead ends: 177 [2018-01-25 00:14:20,023 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 00:14:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-01-25 00:14:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 154. [2018-01-25 00:14:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-25 00:14:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2018-01-25 00:14:20,068 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 8 [2018-01-25 00:14:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:20,068 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2018-01-25 00:14:20,068 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:14:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2018-01-25 00:14:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:14:20,069 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:20,069 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:14:20,069 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:20,069 INFO L82 PathProgramCache]: Analyzing trace with hash 726209747, now seen corresponding path program 1 times [2018-01-25 00:14:20,070 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:20,071 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:20,071 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:20,072 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:20,072 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:20,089 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:20,207 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 00:14:20,207 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:20,208 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:14:20,208 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:20,210 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:14:20,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:14:20,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:14:20,210 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand 4 states. [2018-01-25 00:14:20,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:20,405 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2018-01-25 00:14:20,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:14:20,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:14:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:20,407 INFO L225 Difference]: With dead ends: 154 [2018-01-25 00:14:20,407 INFO L226 Difference]: Without dead ends: 151 [2018-01-25 00:14:20,408 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:14:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-25 00:14:20,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-01-25 00:14:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-25 00:14:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 156 transitions. [2018-01-25 00:14:20,420 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 156 transitions. Word has length 8 [2018-01-25 00:14:20,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:20,421 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 156 transitions. [2018-01-25 00:14:20,421 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:14:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 156 transitions. [2018-01-25 00:14:20,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 00:14:20,422 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:20,422 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:14:20,422 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:20,422 INFO L82 PathProgramCache]: Analyzing trace with hash 3311897, now seen corresponding path program 1 times [2018-01-25 00:14:20,422 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:20,425 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:20,425 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:20,425 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:20,425 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:20,444 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:20,479 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 00:14:20,479 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:20,479 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:14:20,480 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:20,480 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:14:20,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:14:20,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:14:20,480 INFO L87 Difference]: Start difference. First operand 151 states and 156 transitions. Second operand 4 states. [2018-01-25 00:14:20,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:20,603 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2018-01-25 00:14:20,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:14:20,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-25 00:14:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:20,605 INFO L225 Difference]: With dead ends: 170 [2018-01-25 00:14:20,605 INFO L226 Difference]: Without dead ends: 162 [2018-01-25 00:14:20,605 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 00:14:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-25 00:14:20,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 147. [2018-01-25 00:14:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 00:14:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 154 transitions. [2018-01-25 00:14:20,615 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 154 transitions. Word has length 13 [2018-01-25 00:14:20,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:20,615 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 154 transitions. [2018-01-25 00:14:20,615 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:14:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 154 transitions. [2018-01-25 00:14:20,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 00:14:20,616 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:20,616 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:14:20,616 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:20,617 INFO L82 PathProgramCache]: Analyzing trace with hash 3311898, now seen corresponding path program 1 times [2018-01-25 00:14:20,617 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:20,618 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:20,618 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:20,618 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:20,619 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:20,634 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:20,697 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 00:14:20,697 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:20,697 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:14:20,697 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:20,697 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:14:20,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:14:20,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:14:20,698 INFO L87 Difference]: Start difference. First operand 147 states and 154 transitions. Second operand 4 states. [2018-01-25 00:14:20,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:20,842 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2018-01-25 00:14:20,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:14:20,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-25 00:14:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:20,845 INFO L225 Difference]: With dead ends: 167 [2018-01-25 00:14:20,845 INFO L226 Difference]: Without dead ends: 159 [2018-01-25 00:14:20,845 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 00:14:20,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-25 00:14:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2018-01-25 00:14:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-25 00:14:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 158 transitions. [2018-01-25 00:14:20,856 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 158 transitions. Word has length 13 [2018-01-25 00:14:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:20,856 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 158 transitions. [2018-01-25 00:14:20,857 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:14:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 158 transitions. [2018-01-25 00:14:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 00:14:20,857 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:20,858 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 00:14:20,858 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:20,858 INFO L82 PathProgramCache]: Analyzing trace with hash -969711578, now seen corresponding path program 1 times [2018-01-25 00:14:20,859 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:20,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:20,861 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:20,861 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:20,861 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:20,887 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:14:20,986 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:20,986 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:14:20,986 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:20,987 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:14:20,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:14:20,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:14:20,988 INFO L87 Difference]: Start difference. First operand 151 states and 158 transitions. Second operand 4 states. [2018-01-25 00:14:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:21,139 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2018-01-25 00:14:21,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:14:21,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-25 00:14:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:21,140 INFO L225 Difference]: With dead ends: 170 [2018-01-25 00:14:21,140 INFO L226 Difference]: Without dead ends: 154 [2018-01-25 00:14:21,141 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 00:14:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-25 00:14:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 139. [2018-01-25 00:14:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-25 00:14:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2018-01-25 00:14:21,150 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 21 [2018-01-25 00:14:21,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:21,150 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2018-01-25 00:14:21,150 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:14:21,150 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2018-01-25 00:14:21,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-25 00:14:21,151 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:21,151 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 00:14:21,151 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:21,152 INFO L82 PathProgramCache]: Analyzing trace with hash -969711577, now seen corresponding path program 1 times [2018-01-25 00:14:21,152 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:21,153 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:21,153 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:21,154 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:21,154 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:21,174 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:21,261 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 00:14:21,296 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:21,296 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:14:21,296 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:21,297 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:14:21,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:14:21,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:14:21,297 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 7 states. [2018-01-25 00:14:21,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:21,643 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2018-01-25 00:14:21,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:14:21,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-01-25 00:14:21,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:21,644 INFO L225 Difference]: With dead ends: 182 [2018-01-25 00:14:21,644 INFO L226 Difference]: Without dead ends: 175 [2018-01-25 00:14:21,644 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:14:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-25 00:14:21,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 150. [2018-01-25 00:14:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 00:14:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2018-01-25 00:14:21,653 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 21 [2018-01-25 00:14:21,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:21,653 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2018-01-25 00:14:21,654 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:14:21,654 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2018-01-25 00:14:21,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 00:14:21,655 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:21,655 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 00:14:21,655 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:21,655 INFO L82 PathProgramCache]: Analyzing trace with hash 115077033, now seen corresponding path program 1 times [2018-01-25 00:14:21,655 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:21,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:21,657 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:21,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:21,657 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:21,676 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:21,712 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 00:14:21,713 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:21,713 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:14:21,713 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:21,713 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:14:21,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:14:21,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:14:21,714 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand 5 states. [2018-01-25 00:14:21,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:21,895 INFO L93 Difference]: Finished difference Result 198 states and 215 transitions. [2018-01-25 00:14:21,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:14:21,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-25 00:14:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:21,896 INFO L225 Difference]: With dead ends: 198 [2018-01-25 00:14:21,896 INFO L226 Difference]: Without dead ends: 197 [2018-01-25 00:14:21,897 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 00:14:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-25 00:14:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 149. [2018-01-25 00:14:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-25 00:14:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2018-01-25 00:14:21,903 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 23 [2018-01-25 00:14:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:21,903 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2018-01-25 00:14:21,903 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:14:21,904 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2018-01-25 00:14:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-25 00:14:21,904 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:21,904 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 00:14:21,904 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:21,904 INFO L82 PathProgramCache]: Analyzing trace with hash 115077034, now seen corresponding path program 1 times [2018-01-25 00:14:21,905 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:21,905 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:21,906 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:21,906 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:21,906 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:21,921 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:22,014 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 00:14:22,015 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:22,015 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:14:22,015 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:22,016 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:14:22,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:14:22,016 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:14:22,016 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 5 states. [2018-01-25 00:14:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:22,202 INFO L93 Difference]: Finished difference Result 220 states and 238 transitions. [2018-01-25 00:14:22,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:14:22,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-25 00:14:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:22,204 INFO L225 Difference]: With dead ends: 220 [2018-01-25 00:14:22,204 INFO L226 Difference]: Without dead ends: 219 [2018-01-25 00:14:22,205 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 00:14:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-25 00:14:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 148. [2018-01-25 00:14:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-01-25 00:14:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2018-01-25 00:14:22,211 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 23 [2018-01-25 00:14:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:22,211 INFO L432 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2018-01-25 00:14:22,211 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:14:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2018-01-25 00:14:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 00:14:22,212 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:22,212 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 00:14:22,212 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:22,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1386253035, now seen corresponding path program 1 times [2018-01-25 00:14:22,212 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:22,213 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:22,213 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:22,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:22,214 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:22,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:22,344 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 00:14:22,344 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:22,345 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:14:22,345 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:22,345 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 00:14:22,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 00:14:22,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:14:22,346 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand 9 states. [2018-01-25 00:14:23,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:23,352 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2018-01-25 00:14:23,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:14:23,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-01-25 00:14:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:23,354 INFO L225 Difference]: With dead ends: 162 [2018-01-25 00:14:23,354 INFO L226 Difference]: Without dead ends: 161 [2018-01-25 00:14:23,354 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 00:14:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-25 00:14:23,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 147. [2018-01-25 00:14:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 00:14:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2018-01-25 00:14:23,360 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 27 [2018-01-25 00:14:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:23,361 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2018-01-25 00:14:23,361 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 00:14:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2018-01-25 00:14:23,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 00:14:23,362 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:23,362 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 00:14:23,362 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:23,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1386253036, now seen corresponding path program 1 times [2018-01-25 00:14:23,363 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:23,364 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:23,364 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:23,364 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:23,364 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:23,383 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:23,591 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 00:14:23,591 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:23,591 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 00:14:23,591 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:23,592 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 00:14:23,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 00:14:23,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:14:23,592 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 10 states. [2018-01-25 00:14:24,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:24,241 INFO L93 Difference]: Finished difference Result 188 states and 199 transitions. [2018-01-25 00:14:24,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 00:14:24,242 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2018-01-25 00:14:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:24,243 INFO L225 Difference]: With dead ends: 188 [2018-01-25 00:14:24,243 INFO L226 Difference]: Without dead ends: 177 [2018-01-25 00:14:24,243 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 00:14:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-01-25 00:14:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 152. [2018-01-25 00:14:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-25 00:14:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2018-01-25 00:14:24,250 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 27 [2018-01-25 00:14:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:24,251 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2018-01-25 00:14:24,251 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 00:14:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2018-01-25 00:14:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 00:14:24,252 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:24,253 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:14:24,253 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:24,253 INFO L82 PathProgramCache]: Analyzing trace with hash 78293977, now seen corresponding path program 1 times [2018-01-25 00:14:24,253 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:24,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:24,255 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:24,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:24,255 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:24,268 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:24,357 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 00:14:24,357 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:24,357 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:14:24,357 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:24,358 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 00:14:24,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 00:14:24,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:14:24,358 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand 8 states. [2018-01-25 00:14:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:24,550 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2018-01-25 00:14:24,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:14:24,550 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-01-25 00:14:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:24,551 INFO L225 Difference]: With dead ends: 216 [2018-01-25 00:14:24,551 INFO L226 Difference]: Without dead ends: 180 [2018-01-25 00:14:24,552 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 00:14:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-01-25 00:14:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 152. [2018-01-25 00:14:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-25 00:14:24,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2018-01-25 00:14:24,557 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 33 [2018-01-25 00:14:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:24,557 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2018-01-25 00:14:24,557 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 00:14:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2018-01-25 00:14:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:14:24,558 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:24,559 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 00:14:24,559 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:24,559 INFO L82 PathProgramCache]: Analyzing trace with hash -133974448, now seen corresponding path program 1 times [2018-01-25 00:14:24,559 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:24,560 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:24,560 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:24,561 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:24,561 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:24,573 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:24,632 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 00:14:24,632 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:24,633 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:14:24,633 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:24,633 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:14:24,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:14:24,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:14:24,633 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand 5 states. [2018-01-25 00:14:25,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:25,007 INFO L93 Difference]: Finished difference Result 227 states and 242 transitions. [2018-01-25 00:14:25,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:14:25,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-25 00:14:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:25,008 INFO L225 Difference]: With dead ends: 227 [2018-01-25 00:14:25,008 INFO L226 Difference]: Without dead ends: 226 [2018-01-25 00:14:25,008 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 00:14:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-25 00:14:25,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 151. [2018-01-25 00:14:25,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-25 00:14:25,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2018-01-25 00:14:25,017 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 34 [2018-01-25 00:14:25,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:25,017 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2018-01-25 00:14:25,017 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:14:25,017 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2018-01-25 00:14:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:14:25,019 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:25,019 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 00:14:25,019 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:25,019 INFO L82 PathProgramCache]: Analyzing trace with hash -133974447, now seen corresponding path program 1 times [2018-01-25 00:14:25,019 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:25,021 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:25,021 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:25,021 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:25,021 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:25,040 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:25,158 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 00:14:25,158 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:14:25,158 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:14:25,158 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:14:25,159 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:14:25,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:14:25,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:14:25,159 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand 5 states. [2018-01-25 00:14:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:14:25,363 INFO L93 Difference]: Finished difference Result 249 states and 266 transitions. [2018-01-25 00:14:25,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:14:25,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-25 00:14:25,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:14:25,364 INFO L225 Difference]: With dead ends: 249 [2018-01-25 00:14:25,365 INFO L226 Difference]: Without dead ends: 248 [2018-01-25 00:14:25,365 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:14:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-25 00:14:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 150. [2018-01-25 00:14:25,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 00:14:25,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2018-01-25 00:14:25,372 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 34 [2018-01-25 00:14:25,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:14:25,372 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions. [2018-01-25 00:14:25,372 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:14:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions. [2018-01-25 00:14:25,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-25 00:14:25,373 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:14:25,373 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 00:14:25,373 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, 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, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:14:25,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1586747252, now seen corresponding path program 1 times [2018-01-25 00:14:25,374 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:14:25,375 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:25,375 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:14:25,375 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:14:25,375 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:14:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:14:25,387 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:14:25,516 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 00:14:25,516 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:14:25,516 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:14:25,517 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-01-25 00:14:25,519 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], [298], [299], [303], [304], [305] [2018-01-25 00:14:25,568 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:14:25,568 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