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/sll-sorted_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:26:48,245 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:26:48,246 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:26:48,260 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:26:48,261 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:26:48,262 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:26:48,263 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:26:48,264 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:26:48,266 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:26:48,267 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:26:48,267 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:26:48,267 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:26:48,268 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:26:48,269 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:26:48,269 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:26:48,272 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:26:48,274 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:26:48,276 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:26:48,278 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:26:48,279 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:26:48,281 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:26:48,282 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:26:48,282 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:26:48,283 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:26:48,284 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:26:48,285 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:26:48,285 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:26:48,286 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:26:48,286 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:26:48,286 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:26:48,287 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:26:48,287 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 00:26:48,297 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:26:48,297 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:26:48,298 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:26:48,298 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:26:48,298 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:26:48,299 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:26:48,299 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:26:48,299 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:26:48,300 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:26:48,300 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:26:48,300 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:26:48,300 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:26:48,301 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:26:48,301 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:26:48,301 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:26:48,301 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:26:48,301 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:26:48,302 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:26:48,302 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:26:48,302 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:26:48,302 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:26:48,302 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:26:48,303 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:26:48,303 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:26:48,303 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:26:48,303 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:26:48,303 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:26:48,304 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:26:48,304 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:26:48,304 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:26:48,304 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:26:48,304 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:26:48,305 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:26:48,305 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:26:48,306 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:26:48,306 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:26:48,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:26:48,352 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:26:48,356 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:26:48,357 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:26:48,358 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:26:48,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-sorted_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:26:48,542 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:26:48,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:26:48,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:26:48,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:26:48,556 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:26:48,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:26:48" (1/1) ... [2018-01-25 00:26:48,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ffb28ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48, skipping insertion in model container [2018-01-25 00:26:48,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:26:48" (1/1) ... [2018-01-25 00:26:48,577 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:26:48,621 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:26:48,749 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:26:48,778 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:26:48,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48 WrapperNode [2018-01-25 00:26:48,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:26:48,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:26:48,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:26:48,787 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:26:48,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48" (1/1) ... [2018-01-25 00:26:48,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48" (1/1) ... [2018-01-25 00:26:48,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48" (1/1) ... [2018-01-25 00:26:48,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48" (1/1) ... [2018-01-25 00:26:48,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48" (1/1) ... [2018-01-25 00:26:48,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48" (1/1) ... [2018-01-25 00:26:48,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48" (1/1) ... [2018-01-25 00:26:48,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:26:48,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:26:48,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:26:48,829 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:26:48,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48" (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 00:26:48,879 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:26:48,880 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:26:48,880 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:26:48,880 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:26:48,880 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:26:48,880 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:26:48,881 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:26:48,881 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:26:48,881 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:26:48,881 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:26:48,881 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:26:48,881 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:26:48,882 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:26:48,882 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:26:48,882 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:26:48,882 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:26:48,882 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:26:49,435 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:26:49,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:26:49 BoogieIcfgContainer [2018-01-25 00:26:49,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:26:49,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:26:49,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:26:49,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:26:49,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:26:48" (1/3) ... [2018-01-25 00:26:49,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aebd91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:26:49, skipping insertion in model container [2018-01-25 00:26:49,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:26:48" (2/3) ... [2018-01-25 00:26:49,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aebd91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:26:49, skipping insertion in model container [2018-01-25 00:26:49,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:26:49" (3/3) ... [2018-01-25 00:26:49,444 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-sorted_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:26:49,451 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:26:49,458 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 63 error locations. [2018-01-25 00:26:49,499 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:26:49,499 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:26:49,500 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:26:49,500 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:26:49,500 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:26:49,500 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:26:49,500 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:26:49,500 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:26:49,501 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:26:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2018-01-25 00:26:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:26:49,528 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:26:49,529 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:26:49,529 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:26:49,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1406208534, now seen corresponding path program 1 times [2018-01-25 00:26:49,535 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:26:49,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:49,577 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:26:49,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:49,577 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:26:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:26:49,619 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:26:49,680 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 00:26:49,682 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:26:49,682 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:26:49,683 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:26:49,685 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:26:49,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:26:49,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:26:49,698 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2018-01-25 00:26:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:26:50,003 INFO L93 Difference]: Finished difference Result 314 states and 388 transitions. [2018-01-25 00:26:50,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:26:50,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:26:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:26:50,014 INFO L225 Difference]: With dead ends: 314 [2018-01-25 00:26:50,014 INFO L226 Difference]: Without dead ends: 176 [2018-01-25 00:26:50,017 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 00:26:50,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-25 00:26:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 164. [2018-01-25 00:26:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-01-25 00:26:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2018-01-25 00:26:50,054 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 8 [2018-01-25 00:26:50,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:26:50,055 INFO L432 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2018-01-25 00:26:50,055 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:26:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2018-01-25 00:26:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:26:50,055 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:26:50,055 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:26:50,055 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:26:50,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1406208535, now seen corresponding path program 1 times [2018-01-25 00:26:50,056 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:26:50,056 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:50,057 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:26:50,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:50,057 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:26:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:26:50,073 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:26:50,153 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 00:26:50,154 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:26:50,154 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:26:50,154 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:26:50,156 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:26:50,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:26:50,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:26:50,157 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 4 states. [2018-01-25 00:26:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:26:50,367 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2018-01-25 00:26:50,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:26:50,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:26:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:26:50,370 INFO L225 Difference]: With dead ends: 169 [2018-01-25 00:26:50,370 INFO L226 Difference]: Without dead ends: 167 [2018-01-25 00:26:50,371 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 00:26:50,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-25 00:26:50,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2018-01-25 00:26:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-01-25 00:26:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2018-01-25 00:26:50,387 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 8 [2018-01-25 00:26:50,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:26:50,387 INFO L432 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2018-01-25 00:26:50,387 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:26:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2018-01-25 00:26:50,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 00:26:50,388 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:26:50,388 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:26:50,389 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:26:50,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1461588635, now seen corresponding path program 1 times [2018-01-25 00:26:50,389 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:26:50,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:50,390 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:26:50,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:50,391 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:26:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:26:50,414 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:26:50,489 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 00:26:50,490 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:26:50,490 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:26:50,490 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:26:50,490 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:26:50,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:26:50,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:26:50,491 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 4 states. [2018-01-25 00:26:50,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:26:50,652 INFO L93 Difference]: Finished difference Result 194 states and 208 transitions. [2018-01-25 00:26:50,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:26:50,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-25 00:26:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:26:50,654 INFO L225 Difference]: With dead ends: 194 [2018-01-25 00:26:50,654 INFO L226 Difference]: Without dead ends: 171 [2018-01-25 00:26:50,654 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 00:26:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-01-25 00:26:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2018-01-25 00:26:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-25 00:26:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 182 transitions. [2018-01-25 00:26:50,667 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 182 transitions. Word has length 15 [2018-01-25 00:26:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:26:50,668 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 182 transitions. [2018-01-25 00:26:50,668 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:26:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 182 transitions. [2018-01-25 00:26:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 00:26:50,669 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:26:50,669 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:26:50,669 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:26:50,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1461588636, now seen corresponding path program 1 times [2018-01-25 00:26:50,670 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:26:50,671 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:50,671 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:26:50,671 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:50,671 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:26:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:26:50,689 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:26:50,797 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 00:26:50,798 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:26:50,816 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:26:50,816 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:26:50,816 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:26:50,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:26:50,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:26:50,817 INFO L87 Difference]: Start difference. First operand 161 states and 182 transitions. Second operand 7 states. [2018-01-25 00:26:51,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:26:51,175 INFO L93 Difference]: Finished difference Result 264 states and 288 transitions. [2018-01-25 00:26:51,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:26:51,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-01-25 00:26:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:26:51,178 INFO L225 Difference]: With dead ends: 264 [2018-01-25 00:26:51,179 INFO L226 Difference]: Without dead ends: 243 [2018-01-25 00:26:51,179 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:26:51,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-25 00:26:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2018-01-25 00:26:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-25 00:26:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 252 transitions. [2018-01-25 00:26:51,197 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 252 transitions. Word has length 15 [2018-01-25 00:26:51,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:26:51,198 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 252 transitions. [2018-01-25 00:26:51,198 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:26:51,198 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 252 transitions. [2018-01-25 00:26:51,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:26:51,199 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:26:51,199 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:26:51,199 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:26:51,200 INFO L82 PathProgramCache]: Analyzing trace with hash -191427424, now seen corresponding path program 1 times [2018-01-25 00:26:51,200 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:26:51,201 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:51,201 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:26:51,201 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:51,201 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:26:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:26:51,217 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:26:51,286 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 00:26:51,286 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:26:51,286 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:26:51,286 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:26:51,287 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:26:51,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:26:51,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:26:51,288 INFO L87 Difference]: Start difference. First operand 219 states and 252 transitions. Second operand 6 states. [2018-01-25 00:26:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:26:51,613 INFO L93 Difference]: Finished difference Result 410 states and 471 transitions. [2018-01-25 00:26:51,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:26:51,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 00:26:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:26:51,617 INFO L225 Difference]: With dead ends: 410 [2018-01-25 00:26:51,617 INFO L226 Difference]: Without dead ends: 409 [2018-01-25 00:26:51,618 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:26:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-01-25 00:26:51,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 218. [2018-01-25 00:26:51,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-01-25 00:26:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 251 transitions. [2018-01-25 00:26:51,635 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 251 transitions. Word has length 18 [2018-01-25 00:26:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:26:51,635 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 251 transitions. [2018-01-25 00:26:51,635 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:26:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 251 transitions. [2018-01-25 00:26:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:26:51,636 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:26:51,636 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:26:51,636 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:26:51,636 INFO L82 PathProgramCache]: Analyzing trace with hash -191427423, now seen corresponding path program 1 times [2018-01-25 00:26:51,636 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:26:51,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:51,637 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:26:51,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:51,637 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:26:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:26:51,651 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:26:51,706 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 00:26:51,706 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:26:51,706 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:26:51,706 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:26:51,706 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:26:51,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:26:51,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:26:51,707 INFO L87 Difference]: Start difference. First operand 218 states and 251 transitions. Second operand 6 states. [2018-01-25 00:26:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:26:52,243 INFO L93 Difference]: Finished difference Result 403 states and 465 transitions. [2018-01-25 00:26:52,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 00:26:52,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 00:26:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:26:52,245 INFO L225 Difference]: With dead ends: 403 [2018-01-25 00:26:52,245 INFO L226 Difference]: Without dead ends: 398 [2018-01-25 00:26:52,246 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-25 00:26:52,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-01-25 00:26:52,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 207. [2018-01-25 00:26:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-01-25 00:26:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 239 transitions. [2018-01-25 00:26:52,261 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 239 transitions. Word has length 18 [2018-01-25 00:26:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:26:52,262 INFO L432 AbstractCegarLoop]: Abstraction has 207 states and 239 transitions. [2018-01-25 00:26:52,262 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:26:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 239 transitions. [2018-01-25 00:26:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-25 00:26:52,263 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:26:52,263 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] [2018-01-25 00:26:52,263 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:26:52,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2092077490, now seen corresponding path program 1 times [2018-01-25 00:26:52,263 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:26:52,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:52,264 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:26:52,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:52,265 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:26:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:26:52,277 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:26:52,314 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 00:26:52,314 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:26:52,315 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:26:52,315 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:26:52,315 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 00:26:52,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 00:26:52,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 00:26:52,316 INFO L87 Difference]: Start difference. First operand 207 states and 239 transitions. Second operand 3 states. [2018-01-25 00:26:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:26:52,372 INFO L93 Difference]: Finished difference Result 439 states and 508 transitions. [2018-01-25 00:26:52,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 00:26:52,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-01-25 00:26:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:26:52,374 INFO L225 Difference]: With dead ends: 439 [2018-01-25 00:26:52,374 INFO L226 Difference]: Without dead ends: 242 [2018-01-25 00:26:52,375 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 00:26:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-25 00:26:52,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 218. [2018-01-25 00:26:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-01-25 00:26:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 251 transitions. [2018-01-25 00:26:52,391 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 251 transitions. Word has length 24 [2018-01-25 00:26:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:26:52,392 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 251 transitions. [2018-01-25 00:26:52,392 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 00:26:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 251 transitions. [2018-01-25 00:26:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-25 00:26:52,393 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:26:52,393 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 00:26:52,393 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:26:52,394 INFO L82 PathProgramCache]: Analyzing trace with hash -252118467, now seen corresponding path program 1 times [2018-01-25 00:26:52,394 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:26:52,395 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:52,395 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:26:52,395 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:26:52,395 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:26:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:26:52,415 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:26:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:26:52,617 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:26:52,617 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:26:52,618 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-01-25 00:26:52,620 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [14], [17], [19], [20], [21], [24], [27], [28], [31], [34], [40], [41], [53], [57], [62], [66], [72], [76], [78], [81], [84], [85], [89], [358], [359], [363], [364], [365] [2018-01-25 00:26:52,687 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:26:52,687 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