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-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:25:27,632 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:25:27,634 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:25:27,649 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:25:27,649 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:25:27,650 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:25:27,651 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:25:27,653 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:25:27,655 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:25:27,655 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:25:27,656 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:25:27,657 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:25:27,658 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:25:27,659 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:25:27,660 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:25:27,662 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:25:27,664 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:25:27,666 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:25:27,668 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:25:27,669 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:25:27,671 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:25:27,672 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:25:27,672 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:25:27,673 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:25:27,674 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:25:27,675 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:25:27,675 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:25:27,676 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:25:27,676 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:25:27,676 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:25:27,677 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:25:27,677 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 00:25:27,686 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:25:27,686 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:25:27,687 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:25:27,687 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:25:27,687 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:25:27,687 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:25:27,688 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:25:27,688 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:25:27,688 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:25:27,688 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:25:27,688 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:25:27,688 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:25:27,689 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:25:27,689 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:25:27,689 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:25:27,689 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:25:27,689 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:25:27,689 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:25:27,689 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:25:27,690 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:25:27,690 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:25:27,690 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:25:27,690 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:25:27,690 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:25:27,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:25:27,691 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:25:27,691 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:25:27,691 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:25:27,691 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:25:27,691 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:25:27,691 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:25:27,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:25:27,691 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:25:27,692 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:25:27,692 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:25:27,692 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:25:27,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:25:27,737 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:25:27,740 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:25:27,741 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:25:27,741 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:25:27,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:25:27,901 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:25:27,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:25:27,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:25:27,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:25:27,912 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:25:27,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:25:27" (1/1) ... [2018-01-25 00:25:27,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc2f868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:27, skipping insertion in model container [2018-01-25 00:25:27,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:25:27" (1/1) ... [2018-01-25 00:25:27,929 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:25:27,968 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:25:28,088 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:25:28,113 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:25:28,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:28 WrapperNode [2018-01-25 00:25:28,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:25:28,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:25:28,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:25:28,124 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:25:28,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:28" (1/1) ... [2018-01-25 00:25:28,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:28" (1/1) ... [2018-01-25 00:25:28,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:28" (1/1) ... [2018-01-25 00:25:28,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:28" (1/1) ... [2018-01-25 00:25:28,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:28" (1/1) ... [2018-01-25 00:25:28,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:28" (1/1) ... [2018-01-25 00:25:28,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:28" (1/1) ... [2018-01-25 00:25:28,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:25:28,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:25:28,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:25:28,166 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:25:28,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:28" (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 00:25:28,239 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:25:28,240 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:25:28,240 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:25:28,240 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:25:28,241 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:25:28,241 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:25:28,241 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:25:28,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:25:28,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:25:28,241 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:25:28,242 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:25:28,242 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:25:28,242 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:25:28,242 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:25:28,242 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:25:28,242 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:25:28,243 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:25:28,717 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:25:28,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:25:28 BoogieIcfgContainer [2018-01-25 00:25:28,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:25:28,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:25:28,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:25:28,722 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:25:28,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:25:27" (1/3) ... [2018-01-25 00:25:28,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea617b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:25:28, skipping insertion in model container [2018-01-25 00:25:28,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:25:28" (2/3) ... [2018-01-25 00:25:28,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea617b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:25:28, skipping insertion in model container [2018-01-25 00:25:28,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:25:28" (3/3) ... [2018-01-25 00:25:28,727 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:25:28,736 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:25:28,744 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 47 error locations. [2018-01-25 00:25:28,795 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:25:28,795 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:25:28,795 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:25:28,795 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:25:28,796 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:25:28,796 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:25:28,796 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:25:28,796 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:25:28,797 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:25:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2018-01-25 00:25:28,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:25:28,826 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:28,827 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:28,828 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:28,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2026691577, now seen corresponding path program 1 times [2018-01-25 00:25:28,835 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:28,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:28,888 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:28,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:28,889 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:28,935 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:29,005 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 00:25:29,007 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:29,007 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:25:29,008 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:29,010 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:25:29,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:25:29,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:25:29,022 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2018-01-25 00:25:29,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:29,347 INFO L93 Difference]: Finished difference Result 199 states and 248 transitions. [2018-01-25 00:25:29,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:25:29,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:25:29,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:29,359 INFO L225 Difference]: With dead ends: 199 [2018-01-25 00:25:29,359 INFO L226 Difference]: Without dead ends: 126 [2018-01-25 00:25:29,363 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 00:25:29,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-25 00:25:29,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2018-01-25 00:25:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-01-25 00:25:29,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2018-01-25 00:25:29,403 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 8 [2018-01-25 00:25:29,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:29,403 INFO L432 AbstractCegarLoop]: Abstraction has 111 states and 118 transitions. [2018-01-25 00:25:29,403 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:25:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 118 transitions. [2018-01-25 00:25:29,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:25:29,404 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:29,404 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:29,404 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:29,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2026691576, now seen corresponding path program 1 times [2018-01-25 00:25:29,404 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:29,405 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:29,405 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:29,406 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:29,406 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:29,422 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:29,483 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 00:25:29,483 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:29,483 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:25:29,483 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:29,485 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:25:29,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:25:29,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:25:29,485 INFO L87 Difference]: Start difference. First operand 111 states and 118 transitions. Second operand 4 states. [2018-01-25 00:25:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:29,784 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2018-01-25 00:25:29,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:25:29,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:25:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:29,786 INFO L225 Difference]: With dead ends: 131 [2018-01-25 00:25:29,786 INFO L226 Difference]: Without dead ends: 124 [2018-01-25 00:25:29,788 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 00:25:29,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-25 00:25:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2018-01-25 00:25:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-25 00:25:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2018-01-25 00:25:29,800 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 8 [2018-01-25 00:25:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:29,800 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2018-01-25 00:25:29,800 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:25:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2018-01-25 00:25:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 00:25:29,801 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:29,801 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:29,801 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:29,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1176954998, now seen corresponding path program 1 times [2018-01-25 00:25:29,802 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:29,803 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:29,804 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:29,804 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:29,804 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:29,828 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:29,900 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 00:25:29,901 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:29,901 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:25:29,901 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:29,901 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:25:29,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:25:29,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:25:29,902 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand 4 states. [2018-01-25 00:25:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:30,000 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2018-01-25 00:25:30,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:25:30,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-25 00:25:30,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:30,002 INFO L225 Difference]: With dead ends: 135 [2018-01-25 00:25:30,002 INFO L226 Difference]: Without dead ends: 123 [2018-01-25 00:25:30,002 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 00:25:30,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-01-25 00:25:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2018-01-25 00:25:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-25 00:25:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2018-01-25 00:25:30,013 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 15 [2018-01-25 00:25:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:30,013 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2018-01-25 00:25:30,013 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:25:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2018-01-25 00:25:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 00:25:30,014 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:30,014 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:30,014 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:30,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1176954997, now seen corresponding path program 1 times [2018-01-25 00:25:30,015 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:30,016 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:30,016 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:30,017 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:30,017 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:30,034 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:30,118 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 00:25:30,119 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:30,152 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:25:30,152 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:30,152 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:25:30,152 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:25:30,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:25:30,153 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 7 states. [2018-01-25 00:25:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:30,419 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2018-01-25 00:25:30,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:25:30,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-01-25 00:25:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:30,420 INFO L225 Difference]: With dead ends: 145 [2018-01-25 00:25:30,420 INFO L226 Difference]: Without dead ends: 139 [2018-01-25 00:25:30,421 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 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 00:25:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-25 00:25:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2018-01-25 00:25:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-25 00:25:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2018-01-25 00:25:30,430 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 15 [2018-01-25 00:25:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:30,430 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2018-01-25 00:25:30,431 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:25:30,431 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2018-01-25 00:25:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:25:30,431 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:30,432 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 00:25:30,432 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:30,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1446653265, now seen corresponding path program 1 times [2018-01-25 00:25:30,433 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:30,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:30,435 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:30,435 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:30,435 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:30,452 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:30,526 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 00:25:30,526 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:30,527 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:25:30,527 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:30,527 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:25:30,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:25:30,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:25:30,528 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand 6 states. [2018-01-25 00:25:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:30,831 INFO L93 Difference]: Finished difference Result 186 states and 203 transitions. [2018-01-25 00:25:30,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:25:30,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 00:25:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:30,832 INFO L225 Difference]: With dead ends: 186 [2018-01-25 00:25:30,833 INFO L226 Difference]: Without dead ends: 185 [2018-01-25 00:25:30,833 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:25:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-01-25 00:25:30,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 115. [2018-01-25 00:25:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-25 00:25:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2018-01-25 00:25:30,840 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 18 [2018-01-25 00:25:30,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:30,840 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2018-01-25 00:25:30,840 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:25:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2018-01-25 00:25:30,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:25:30,841 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:30,841 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 00:25:30,841 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:30,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1446653266, now seen corresponding path program 1 times [2018-01-25 00:25:30,841 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:30,843 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:30,843 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:30,843 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:30,843 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:30,857 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:30,926 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 00:25:30,926 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:30,926 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:25:30,926 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:30,927 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:25:30,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:25:30,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:25:30,927 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 6 states. [2018-01-25 00:25:31,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:31,138 INFO L93 Difference]: Finished difference Result 196 states and 214 transitions. [2018-01-25 00:25:31,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 00:25:31,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-25 00:25:31,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:31,139 INFO L225 Difference]: With dead ends: 196 [2018-01-25 00:25:31,139 INFO L226 Difference]: Without dead ends: 189 [2018-01-25 00:25:31,140 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 00:25:31,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-25 00:25:31,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 110. [2018-01-25 00:25:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-01-25 00:25:31,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2018-01-25 00:25:31,149 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 18 [2018-01-25 00:25:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:31,149 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2018-01-25 00:25:31,149 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:25:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2018-01-25 00:25:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 00:25:31,150 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:31,150 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:31,150 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:31,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1020537408, now seen corresponding path program 1 times [2018-01-25 00:25:31,151 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:31,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:31,152 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:31,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:31,152 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:31,170 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:31,230 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 00:25:31,231 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:31,231 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:25:31,231 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:31,231 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:25:31,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:25:31,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:25:31,232 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand 6 states. [2018-01-25 00:25:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:31,427 INFO L93 Difference]: Finished difference Result 199 states and 219 transitions. [2018-01-25 00:25:31,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:25:31,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-25 00:25:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:31,429 INFO L225 Difference]: With dead ends: 199 [2018-01-25 00:25:31,429 INFO L226 Difference]: Without dead ends: 198 [2018-01-25 00:25:31,429 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:25:31,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-01-25 00:25:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 109. [2018-01-25 00:25:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-25 00:25:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2018-01-25 00:25:31,437 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 26 [2018-01-25 00:25:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:31,437 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2018-01-25 00:25:31,437 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:25:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2018-01-25 00:25:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 00:25:31,438 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:31,438 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:25:31,438 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:31,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1020537407, now seen corresponding path program 1 times [2018-01-25 00:25:31,438 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:31,439 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:31,440 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:31,440 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:31,440 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:31,456 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:31,556 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 00:25:31,556 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:31,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:25:31,557 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:31,557 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:25:31,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:25:31,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:25:31,558 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand 6 states. [2018-01-25 00:25:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:31,851 INFO L93 Difference]: Finished difference Result 195 states and 214 transitions. [2018-01-25 00:25:31,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:25:31,851 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-25 00:25:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:31,853 INFO L225 Difference]: With dead ends: 195 [2018-01-25 00:25:31,853 INFO L226 Difference]: Without dead ends: 191 [2018-01-25 00:25:31,854 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:25:31,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-25 00:25:31,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 99. [2018-01-25 00:25:31,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-25 00:25:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2018-01-25 00:25:31,861 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 26 [2018-01-25 00:25:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:31,861 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2018-01-25 00:25:31,861 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:25:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2018-01-25 00:25:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-25 00:25:31,863 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:31,863 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 00:25:31,863 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:31,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1179857763, now seen corresponding path program 1 times [2018-01-25 00:25:31,863 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:31,864 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:31,865 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:31,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:31,865 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:31,874 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:31,914 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 00:25:31,915 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:25:31,915 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:25:31,915 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:25:31,915 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:25:31,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:25:31,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:25:31,916 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 5 states. [2018-01-25 00:25:32,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:25:32,041 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2018-01-25 00:25:32,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:25:32,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-01-25 00:25:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:25:32,043 INFO L225 Difference]: With dead ends: 150 [2018-01-25 00:25:32,043 INFO L226 Difference]: Without dead ends: 114 [2018-01-25 00:25:32,044 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:25:32,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-25 00:25:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2018-01-25 00:25:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-25 00:25:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2018-01-25 00:25:32,050 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 27 [2018-01-25 00:25:32,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:25:32,050 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2018-01-25 00:25:32,051 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:25:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2018-01-25 00:25:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-25 00:25:32,052 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:25:32,052 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] [2018-01-25 00:25:32,052 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:25:32,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2127198597, now seen corresponding path program 1 times [2018-01-25 00:25:32,053 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:25:32,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:32,054 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:25:32,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:25:32,054 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:25:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:25:32,064 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:25:32,168 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 00:25:32,168 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:25:32,168 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:25:32,169 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-25 00:25:32,171 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [14], [17], [61], [65], [70], [74], [82], [83], [90], [94], [102], [108], [109], [110], [158], [160], [163], [213], [214], [218], [219], [220] [2018-01-25 00:25:32,235 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:25:32,235 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