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_mostprecise.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:54:00,578 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:54:00,580 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:54:00,592 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:54:00,592 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:54:00,593 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:54:00,595 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:54:00,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:54:00,600 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:54:00,601 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:54:00,602 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:54:00,602 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:54:00,603 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:54:00,605 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:54:00,606 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:54:00,608 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:54:00,610 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:54:00,612 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:54:00,614 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:54:00,615 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:54:00,617 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:54:00,618 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:54:00,618 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:54:00,619 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:54:00,620 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:54:00,621 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:54:00,621 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:54:00,622 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:54:00,622 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:54:00,623 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:54:00,623 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:54:00,624 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_mostprecise.epf [2018-01-24 20:54:00,633 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:54:00,633 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:54:00,634 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:54:00,634 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:54:00,634 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:54:00,635 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:54:00,635 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:54:00,635 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:54:00,635 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:54:00,636 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:54:00,636 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:54:00,636 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:54:00,637 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:54:00,637 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:54:00,637 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:54:00,637 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:54:00,637 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:54:00,637 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:54:00,638 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:54:00,638 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:54:00,638 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:54:00,638 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:54:00,638 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:54:00,639 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:54:00,639 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:54:00,639 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:54:00,639 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:54:00,640 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:54:00,640 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:54:00,640 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:54:00,640 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:54:00,640 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:54:00,640 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:54:00,641 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:54:00,641 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:54:00,642 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:54:00,642 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:54:00,677 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:54:00,689 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:54:00,693 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:54:00,695 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:54:00,695 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:54:00,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01_true-unreach-call_true-valid-memsafety.i [2018-01-24 20:54:00,891 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:54:00,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:54:00,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:54:00,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:54:00,906 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:54:00,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:54:00" (1/1) ... [2018-01-24 20:54:00,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321f72c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:00, skipping insertion in model container [2018-01-24 20:54:00,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:54:00" (1/1) ... [2018-01-24 20:54:00,931 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:54:00,976 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:54:01,113 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:54:01,139 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:54:01,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:01 WrapperNode [2018-01-24 20:54:01,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:54:01,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:54:01,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:54:01,147 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:54:01,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:01" (1/1) ... [2018-01-24 20:54:01,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:01" (1/1) ... [2018-01-24 20:54:01,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:01" (1/1) ... [2018-01-24 20:54:01,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:01" (1/1) ... [2018-01-24 20:54:01,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:01" (1/1) ... [2018-01-24 20:54:01,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:01" (1/1) ... [2018-01-24 20:54:01,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:01" (1/1) ... [2018-01-24 20:54:01,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:54:01,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:54:01,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:54:01,191 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:54:01,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:01" (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 [2018-01-24 20:54:01,240 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:54:01,240 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:54:01,240 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:54:01,240 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:54:01,240 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:54:01,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:54:01,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:54:01,241 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:54:01,241 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:54:01,241 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:54:01,241 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:54:01,241 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 20:54:01,241 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:54:01,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:54:01,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:54:01,859 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:54:01,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:54:01 BoogieIcfgContainer [2018-01-24 20:54:01,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:54:01,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:54:01,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:54:01,862 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:54:01,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:54:00" (1/3) ... [2018-01-24 20:54:01,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16259bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:54:01, skipping insertion in model container [2018-01-24 20:54:01,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:54:01" (2/3) ... [2018-01-24 20:54:01,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16259bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:54:01, skipping insertion in model container [2018-01-24 20:54:01,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:54:01" (3/3) ... [2018-01-24 20:54:01,866 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-01_true-unreach-call_true-valid-memsafety.i [2018-01-24 20:54:01,872 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:54:01,878 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2018-01-24 20:54:01,922 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:54:01,923 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:54:01,923 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:54:01,923 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:54:01,923 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:54:01,923 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:54:01,923 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:54:01,923 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:54:01,924 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:54:01,945 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2018-01-24 20:54:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:54:01,951 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:01,952 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:01,952 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:01,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1231756068, now seen corresponding path program 1 times [2018-01-24 20:54:01,958 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:01,999 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:01,999 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:02,000 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:02,000 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:02,039 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:02,112 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:02,113 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:54:02,113 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:02,116 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:54:02,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:54:02,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:54:02,135 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 4 states. [2018-01-24 20:54:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:02,562 INFO L93 Difference]: Finished difference Result 402 states and 529 transitions. [2018-01-24 20:54:02,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:54:02,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:54:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:02,579 INFO L225 Difference]: With dead ends: 402 [2018-01-24 20:54:02,579 INFO L226 Difference]: Without dead ends: 214 [2018-01-24 20:54:02,584 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 [2018-01-24 20:54:02,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-01-24 20:54:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 185. [2018-01-24 20:54:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-24 20:54:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 196 transitions. [2018-01-24 20:54:02,638 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 196 transitions. Word has length 8 [2018-01-24 20:54:02,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:02,638 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 196 transitions. [2018-01-24 20:54:02,638 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:54:02,639 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 196 transitions. [2018-01-24 20:54:02,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:54:02,639 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:02,639 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:02,639 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:02,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1231756069, now seen corresponding path program 1 times [2018-01-24 20:54:02,640 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:02,641 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:02,641 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:02,641 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:02,641 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:02,663 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:02,749 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:02,749 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:54:02,749 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:02,751 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:54:02,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:54:02,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:54:02,752 INFO L87 Difference]: Start difference. First operand 185 states and 196 transitions. Second operand 4 states. [2018-01-24 20:54:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:02,948 INFO L93 Difference]: Finished difference Result 218 states and 228 transitions. [2018-01-24 20:54:02,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:54:02,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:54:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:02,950 INFO L225 Difference]: With dead ends: 218 [2018-01-24 20:54:02,950 INFO L226 Difference]: Without dead ends: 206 [2018-01-24 20:54:02,951 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 [2018-01-24 20:54:02,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-01-24 20:54:02,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 195. [2018-01-24 20:54:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-24 20:54:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 213 transitions. [2018-01-24 20:54:02,964 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 213 transitions. Word has length 8 [2018-01-24 20:54:02,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:02,965 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 213 transitions. [2018-01-24 20:54:02,965 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:54:02,965 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 213 transitions. [2018-01-24 20:54:02,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:54:02,966 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:02,966 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:02,966 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:02,966 INFO L82 PathProgramCache]: Analyzing trace with hash -268288902, now seen corresponding path program 1 times [2018-01-24 20:54:02,967 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:02,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:02,968 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:02,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:02,968 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:02,995 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:03,042 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:03,042 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:54:03,043 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:03,043 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:54:03,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:54:03,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:54:03,044 INFO L87 Difference]: Start difference. First operand 195 states and 213 transitions. Second operand 5 states. [2018-01-24 20:54:03,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:03,430 INFO L93 Difference]: Finished difference Result 334 states and 360 transitions. [2018-01-24 20:54:03,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:54:03,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 20:54:03,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:03,434 INFO L225 Difference]: With dead ends: 334 [2018-01-24 20:54:03,435 INFO L226 Difference]: Without dead ends: 333 [2018-01-24 20:54:03,435 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:54:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-01-24 20:54:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 194. [2018-01-24 20:54:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-24 20:54:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 212 transitions. [2018-01-24 20:54:03,455 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 212 transitions. Word has length 18 [2018-01-24 20:54:03,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:03,456 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 212 transitions. [2018-01-24 20:54:03,456 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:54:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 212 transitions. [2018-01-24 20:54:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 20:54:03,457 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:03,457 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:03,457 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:03,458 INFO L82 PathProgramCache]: Analyzing trace with hash -268288901, now seen corresponding path program 1 times [2018-01-24 20:54:03,458 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:03,459 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:03,460 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:03,460 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:03,460 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:03,481 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:03,553 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:03,553 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:54:03,553 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:03,554 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:54:03,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:54:03,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:54:03,554 INFO L87 Difference]: Start difference. First operand 194 states and 212 transitions. Second operand 5 states. [2018-01-24 20:54:03,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:03,870 INFO L93 Difference]: Finished difference Result 362 states and 397 transitions. [2018-01-24 20:54:03,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:54:03,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 20:54:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:03,873 INFO L225 Difference]: With dead ends: 362 [2018-01-24 20:54:03,873 INFO L226 Difference]: Without dead ends: 361 [2018-01-24 20:54:03,873 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:54:03,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-01-24 20:54:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 193. [2018-01-24 20:54:03,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-24 20:54:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 211 transitions. [2018-01-24 20:54:03,887 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 211 transitions. Word has length 18 [2018-01-24 20:54:03,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:03,887 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 211 transitions. [2018-01-24 20:54:03,887 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:54:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 211 transitions. [2018-01-24 20:54:03,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 20:54:03,888 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:03,888 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:03,888 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash 339478269, now seen corresponding path program 1 times [2018-01-24 20:54:03,888 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:03,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:03,889 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:03,929 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:03,929 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:03,952 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:04,079 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:04,079 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:54:04,079 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:04,080 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:54:04,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:54:04,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:54:04,080 INFO L87 Difference]: Start difference. First operand 193 states and 211 transitions. Second operand 8 states. [2018-01-24 20:54:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:04,719 INFO L93 Difference]: Finished difference Result 336 states and 361 transitions. [2018-01-24 20:54:04,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:54:04,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-01-24 20:54:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:04,722 INFO L225 Difference]: With dead ends: 336 [2018-01-24 20:54:04,722 INFO L226 Difference]: Without dead ends: 335 [2018-01-24 20:54:04,722 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:54:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-01-24 20:54:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 192. [2018-01-24 20:54:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-24 20:54:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 210 transitions. [2018-01-24 20:54:04,731 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 210 transitions. Word has length 21 [2018-01-24 20:54:04,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:04,731 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 210 transitions. [2018-01-24 20:54:04,731 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:54:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 210 transitions. [2018-01-24 20:54:04,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 20:54:04,732 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:04,733 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:04,733 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:04,733 INFO L82 PathProgramCache]: Analyzing trace with hash 339478270, now seen corresponding path program 1 times [2018-01-24 20:54:04,733 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:04,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:04,734 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:04,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:04,734 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:04,753 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:04,990 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:04,990 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:54:04,990 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:04,991 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:54:04,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:54:04,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:54:04,991 INFO L87 Difference]: Start difference. First operand 192 states and 210 transitions. Second operand 8 states. [2018-01-24 20:54:05,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:05,752 INFO L93 Difference]: Finished difference Result 337 states and 362 transitions. [2018-01-24 20:54:05,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 20:54:05,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-01-24 20:54:05,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:05,754 INFO L225 Difference]: With dead ends: 337 [2018-01-24 20:54:05,754 INFO L226 Difference]: Without dead ends: 336 [2018-01-24 20:54:05,755 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:54:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-24 20:54:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 191. [2018-01-24 20:54:05,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-24 20:54:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 209 transitions. [2018-01-24 20:54:05,765 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 209 transitions. Word has length 21 [2018-01-24 20:54:05,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:05,765 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 209 transitions. [2018-01-24 20:54:05,766 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:54:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 209 transitions. [2018-01-24 20:54:05,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 20:54:05,767 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:05,767 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] [2018-01-24 20:54:05,767 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:05,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1615330234, now seen corresponding path program 1 times [2018-01-24 20:54:05,767 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:05,768 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:05,768 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:05,768 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:05,768 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:05,779 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:05,837 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:05,837 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:54:05,837 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:05,838 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:54:05,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:54:05,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:54:05,838 INFO L87 Difference]: Start difference. First operand 191 states and 209 transitions. Second operand 5 states. [2018-01-24 20:54:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:05,979 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2018-01-24 20:54:05,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:54:05,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-01-24 20:54:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:05,981 INFO L225 Difference]: With dead ends: 445 [2018-01-24 20:54:05,981 INFO L226 Difference]: Without dead ends: 283 [2018-01-24 20:54:05,983 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 [2018-01-24 20:54:05,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-01-24 20:54:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 195. [2018-01-24 20:54:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-24 20:54:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 213 transitions. [2018-01-24 20:54:05,992 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 213 transitions. Word has length 27 [2018-01-24 20:54:05,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:05,993 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 213 transitions. [2018-01-24 20:54:05,993 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:54:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 213 transitions. [2018-01-24 20:54:05,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:54:05,994 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:05,994 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:05,994 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:05,994 INFO L82 PathProgramCache]: Analyzing trace with hash 803446251, now seen corresponding path program 1 times [2018-01-24 20:54:05,994 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:05,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:05,995 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:05,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:05,995 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:06,014 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:06,090 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:06,090 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:54:06,090 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:06,090 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:54:06,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:54:06,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:54:06,091 INFO L87 Difference]: Start difference. First operand 195 states and 213 transitions. Second operand 5 states. [2018-01-24 20:54:06,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:06,275 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2018-01-24 20:54:06,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:54:06,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 20:54:06,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:06,277 INFO L225 Difference]: With dead ends: 217 [2018-01-24 20:54:06,277 INFO L226 Difference]: Without dead ends: 204 [2018-01-24 20:54:06,277 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:54:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-24 20:54:06,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 186. [2018-01-24 20:54:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-01-24 20:54:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 204 transitions. [2018-01-24 20:54:06,285 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 204 transitions. Word has length 29 [2018-01-24 20:54:06,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:06,285 INFO L432 AbstractCegarLoop]: Abstraction has 186 states and 204 transitions. [2018-01-24 20:54:06,285 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:54:06,285 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 204 transitions. [2018-01-24 20:54:06,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:54:06,286 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:06,287 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:06,287 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:06,287 INFO L82 PathProgramCache]: Analyzing trace with hash 803446252, now seen corresponding path program 1 times [2018-01-24 20:54:06,287 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:06,288 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:06,288 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:06,288 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:06,288 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:06,302 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:06,471 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:06,471 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:54:06,471 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:06,472 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 20:54:06,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 20:54:06,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:54:06,472 INFO L87 Difference]: Start difference. First operand 186 states and 204 transitions. Second operand 7 states. [2018-01-24 20:54:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:07,028 INFO L93 Difference]: Finished difference Result 248 states and 262 transitions. [2018-01-24 20:54:07,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:54:07,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-01-24 20:54:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:07,029 INFO L225 Difference]: With dead ends: 248 [2018-01-24 20:54:07,029 INFO L226 Difference]: Without dead ends: 243 [2018-01-24 20:54:07,030 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:54:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-24 20:54:07,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 216. [2018-01-24 20:54:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-01-24 20:54:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 244 transitions. [2018-01-24 20:54:07,041 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 244 transitions. Word has length 29 [2018-01-24 20:54:07,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:07,041 INFO L432 AbstractCegarLoop]: Abstraction has 216 states and 244 transitions. [2018-01-24 20:54:07,041 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 20:54:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 244 transitions. [2018-01-24 20:54:07,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 20:54:07,042 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:07,042 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:07,043 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:07,043 INFO L82 PathProgramCache]: Analyzing trace with hash -982263634, now seen corresponding path program 1 times [2018-01-24 20:54:07,043 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:07,044 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:07,044 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:07,044 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:07,044 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:07,057 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:07,100 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:07,100 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:54:07,100 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:07,100 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:54:07,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:54:07,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:54:07,101 INFO L87 Difference]: Start difference. First operand 216 states and 244 transitions. Second operand 5 states. [2018-01-24 20:54:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:07,342 INFO L93 Difference]: Finished difference Result 305 states and 346 transitions. [2018-01-24 20:54:07,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:54:07,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-01-24 20:54:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:07,343 INFO L225 Difference]: With dead ends: 305 [2018-01-24 20:54:07,344 INFO L226 Difference]: Without dead ends: 304 [2018-01-24 20:54:07,344 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:54:07,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-01-24 20:54:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 215. [2018-01-24 20:54:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-01-24 20:54:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 242 transitions. [2018-01-24 20:54:07,356 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 242 transitions. Word has length 31 [2018-01-24 20:54:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:07,356 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 242 transitions. [2018-01-24 20:54:07,356 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:54:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 242 transitions. [2018-01-24 20:54:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 20:54:07,357 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:07,358 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:07,358 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:07,358 INFO L82 PathProgramCache]: Analyzing trace with hash -982263633, now seen corresponding path program 1 times [2018-01-24 20:54:07,358 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:07,359 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:07,359 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:07,359 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:07,359 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:07,371 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:07,434 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:07,434 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:54:07,434 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:07,434 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:54:07,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:54:07,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:54:07,435 INFO L87 Difference]: Start difference. First operand 215 states and 242 transitions. Second operand 5 states. [2018-01-24 20:54:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:07,824 INFO L93 Difference]: Finished difference Result 333 states and 380 transitions. [2018-01-24 20:54:07,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:54:07,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-01-24 20:54:07,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:07,826 INFO L225 Difference]: With dead ends: 333 [2018-01-24 20:54:07,826 INFO L226 Difference]: Without dead ends: 332 [2018-01-24 20:54:07,826 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:54:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-01-24 20:54:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 214. [2018-01-24 20:54:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-01-24 20:54:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 240 transitions. [2018-01-24 20:54:07,836 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 240 transitions. Word has length 31 [2018-01-24 20:54:07,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:07,836 INFO L432 AbstractCegarLoop]: Abstraction has 214 states and 240 transitions. [2018-01-24 20:54:07,836 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:54:07,836 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 240 transitions. [2018-01-24 20:54:07,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 20:54:07,837 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:07,837 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:07,837 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:07,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1048421776, now seen corresponding path program 1 times [2018-01-24 20:54:07,838 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:07,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:07,839 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:07,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:07,839 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:07,851 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:07,949 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:07,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:54:07,949 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:07,949 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:54:07,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:54:07,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:54:07,950 INFO L87 Difference]: Start difference. First operand 214 states and 240 transitions. Second operand 9 states. [2018-01-24 20:54:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:08,323 INFO L93 Difference]: Finished difference Result 224 states and 249 transitions. [2018-01-24 20:54:08,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:54:08,323 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-01-24 20:54:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:08,324 INFO L225 Difference]: With dead ends: 224 [2018-01-24 20:54:08,324 INFO L226 Difference]: Without dead ends: 223 [2018-01-24 20:54:08,325 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:54:08,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-01-24 20:54:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 213. [2018-01-24 20:54:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-24 20:54:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 239 transitions. [2018-01-24 20:54:08,338 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 239 transitions. Word has length 35 [2018-01-24 20:54:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:08,338 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 239 transitions. [2018-01-24 20:54:08,338 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:54:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 239 transitions. [2018-01-24 20:54:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 20:54:08,339 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:08,340 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:08,340 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:08,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1048421775, now seen corresponding path program 1 times [2018-01-24 20:54:08,340 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:08,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:08,341 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:08,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:08,342 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:08,355 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:08,512 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:08,512 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:54:08,512 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:08,513 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:54:08,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:54:08,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:54:08,513 INFO L87 Difference]: Start difference. First operand 213 states and 239 transitions. Second operand 10 states. [2018-01-24 20:54:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:09,119 INFO L93 Difference]: Finished difference Result 225 states and 250 transitions. [2018-01-24 20:54:09,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 20:54:09,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-01-24 20:54:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:09,160 INFO L225 Difference]: With dead ends: 225 [2018-01-24 20:54:09,160 INFO L226 Difference]: Without dead ends: 215 [2018-01-24 20:54:09,161 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-24 20:54:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-24 20:54:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 194. [2018-01-24 20:54:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-24 20:54:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 219 transitions. [2018-01-24 20:54:09,167 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 219 transitions. Word has length 35 [2018-01-24 20:54:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:09,167 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 219 transitions. [2018-01-24 20:54:09,168 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:54:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 219 transitions. [2018-01-24 20:54:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-24 20:54:09,169 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:09,169 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:09,169 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:09,169 INFO L82 PathProgramCache]: Analyzing trace with hash -436143591, now seen corresponding path program 1 times [2018-01-24 20:54:09,169 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:09,170 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:09,170 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:09,170 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:09,171 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:09,179 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:09,215 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:09,216 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:54:09,216 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:09,216 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:54:09,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:54:09,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:54:09,216 INFO L87 Difference]: Start difference. First operand 194 states and 219 transitions. Second operand 5 states. [2018-01-24 20:54:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:09,320 INFO L93 Difference]: Finished difference Result 274 states and 297 transitions. [2018-01-24 20:54:09,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:54:09,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-01-24 20:54:09,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:09,322 INFO L225 Difference]: With dead ends: 274 [2018-01-24 20:54:09,322 INFO L226 Difference]: Without dead ends: 218 [2018-01-24 20:54:09,323 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 [2018-01-24 20:54:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-24 20:54:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 194. [2018-01-24 20:54:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-24 20:54:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 217 transitions. [2018-01-24 20:54:09,335 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 217 transitions. Word has length 37 [2018-01-24 20:54:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:09,335 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 217 transitions. [2018-01-24 20:54:09,335 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:54:09,335 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 217 transitions. [2018-01-24 20:54:09,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-24 20:54:09,336 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:09,336 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:09,336 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:09,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2094023958, now seen corresponding path program 1 times [2018-01-24 20:54:09,337 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:09,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:09,338 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:09,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:09,338 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:09,348 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:09,526 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:54:09,526 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 20:54:09,526 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:54:09,526 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:54:09,526 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:54:09,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:54:09,526 INFO L87 Difference]: Start difference. First operand 194 states and 217 transitions. Second operand 10 states. [2018-01-24 20:54:10,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:54:10,013 INFO L93 Difference]: Finished difference Result 395 states and 437 transitions. [2018-01-24 20:54:10,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 20:54:10,013 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2018-01-24 20:54:10,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:54:10,014 INFO L225 Difference]: With dead ends: 395 [2018-01-24 20:54:10,014 INFO L226 Difference]: Without dead ends: 285 [2018-01-24 20:54:10,015 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2018-01-24 20:54:10,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-01-24 20:54:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 210. [2018-01-24 20:54:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-01-24 20:54:10,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2018-01-24 20:54:10,029 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 43 [2018-01-24 20:54:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:54:10,029 INFO L432 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2018-01-24 20:54:10,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:54:10,029 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2018-01-24 20:54:10,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-24 20:54:10,030 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:54:10,030 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:54:10,030 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr70EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:54:10,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1866790362, now seen corresponding path program 1 times [2018-01-24 20:54:10,031 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:54:10,032 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:10,032 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:54:10,032 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:54:10,032 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:54:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:54:10,043 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:54:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:54:10,217 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:54:10,217 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:54:10,222 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 46 with the following transitions: [2018-01-24 20:54:10,224 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [10], [16], [21], [25], [31], [34], [35], [61], [62], [65], [70], [71], [74], [80], [84], [90], [94], [96], [99], [217], [221], [226], [230], [238], [244], [245], [246], [248], [252], [256], [331], [336], [340], [346], [349], [450], [451], [452] [2018-01-24 20:54:10,289 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:54:10,289 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