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/sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 21:01:23,583 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 21:01:23,585 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 21:01:23,599 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 21:01:23,599 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 21:01:23,600 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 21:01:23,601 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 21:01:23,603 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 21:01:23,605 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 21:01:23,606 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 21:01:23,607 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 21:01:23,607 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 21:01:23,608 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 21:01:23,609 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 21:01:23,610 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 21:01:23,613 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 21:01:23,615 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 21:01:23,617 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 21:01:23,618 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 21:01:23,619 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 21:01:23,621 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 21:01:23,622 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 21:01:23,622 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 21:01:23,623 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 21:01:23,624 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 21:01:23,625 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 21:01:23,625 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 21:01:23,626 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 21:01:23,626 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 21:01:23,626 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 21:01:23,627 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 21:01:23,627 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 21:01:23,637 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 21:01:23,638 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 21:01:23,639 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 21:01:23,639 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 21:01:23,639 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 21:01:23,639 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 21:01:23,640 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 21:01:23,640 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 21:01:23,640 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 21:01:23,641 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 21:01:23,641 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 21:01:23,641 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 21:01:23,641 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 21:01:23,641 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 21:01:23,642 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 21:01:23,642 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 21:01:23,642 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 21:01:23,642 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 21:01:23,642 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 21:01:23,643 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 21:01:23,643 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 21:01:23,643 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 21:01:23,643 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 21:01:23,643 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 21:01:23,644 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 21:01:23,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 21:01:23,644 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 21:01:23,644 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 21:01:23,645 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 21:01:23,645 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 21:01:23,645 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 21:01:23,645 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 21:01:23,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 21:01:23,646 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 21:01:23,646 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 21:01:23,647 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 21:01:23,647 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 21:01:23,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 21:01:23,695 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 21:01:23,699 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 21:01:23,701 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 21:01:23,702 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 21:01:23,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-24 21:01:23,875 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 21:01:23,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 21:01:23,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 21:01:23,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 21:01:23,887 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 21:01:23,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:01:23" (1/1) ... [2018-01-24 21:01:23,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41641836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:23, skipping insertion in model container [2018-01-24 21:01:23,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:01:23" (1/1) ... [2018-01-24 21:01:23,911 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:01:23,952 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:01:24,069 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:01:24,088 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:01:24,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:24 WrapperNode [2018-01-24 21:01:24,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 21:01:24,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 21:01:24,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 21:01:24,096 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 21:01:24,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:24" (1/1) ... [2018-01-24 21:01:24,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:24" (1/1) ... [2018-01-24 21:01:24,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:24" (1/1) ... [2018-01-24 21:01:24,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:24" (1/1) ... [2018-01-24 21:01:24,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:24" (1/1) ... [2018-01-24 21:01:24,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:24" (1/1) ... [2018-01-24 21:01:24,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:24" (1/1) ... [2018-01-24 21:01:24,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 21:01:24,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 21:01:24,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 21:01:24,135 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 21:01:24,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:24" (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 21:01:24,188 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 21:01:24,188 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 21:01:24,188 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 21:01:24,188 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 21:01:24,188 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 21:01:24,189 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 21:01:24,189 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 21:01:24,189 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 21:01:24,189 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 21:01:24,189 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 21:01:24,189 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 21:01:24,189 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 21:01:24,189 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 21:01:24,189 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 21:01:24,190 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 21:01:24,190 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 21:01:24,190 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 21:01:24,683 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 21:01:24,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:01:24 BoogieIcfgContainer [2018-01-24 21:01:24,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 21:01:24,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 21:01:24,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 21:01:24,688 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 21:01:24,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 09:01:23" (1/3) ... [2018-01-24 21:01:24,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db15a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 09:01:24, skipping insertion in model container [2018-01-24 21:01:24,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:01:24" (2/3) ... [2018-01-24 21:01:24,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db15a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 09:01:24, skipping insertion in model container [2018-01-24 21:01:24,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:01:24" (3/3) ... [2018-01-24 21:01:24,692 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-24 21:01:24,699 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 21:01:24,707 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 47 error locations. [2018-01-24 21:01:24,747 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 21:01:24,748 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 21:01:24,748 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 21:01:24,748 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 21:01:24,748 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 21:01:24,748 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 21:01:24,748 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 21:01:24,748 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 21:01:24,749 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 21:01:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2018-01-24 21:01:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 21:01:24,773 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:01:24,774 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:01:24,774 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:01:24,778 INFO L82 PathProgramCache]: Analyzing trace with hash -2026691577, now seen corresponding path program 1 times [2018-01-24 21:01:24,780 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:01:24,825 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:24,826 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:01:24,826 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:24,826 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:01:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:01:24,865 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:01:24,919 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 21:01:24,921 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:01:24,921 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:01:24,921 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:01:24,924 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:01:24,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:01:24,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:01:24,936 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2018-01-24 21:01:25,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:01:25,231 INFO L93 Difference]: Finished difference Result 199 states and 248 transitions. [2018-01-24 21:01:25,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:01:25,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 21:01:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:01:25,246 INFO L225 Difference]: With dead ends: 199 [2018-01-24 21:01:25,246 INFO L226 Difference]: Without dead ends: 126 [2018-01-24 21:01:25,250 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 21:01:25,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-24 21:01:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2018-01-24 21:01:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-01-24 21:01:25,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2018-01-24 21:01:25,298 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 8 [2018-01-24 21:01:25,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:01:25,298 INFO L432 AbstractCegarLoop]: Abstraction has 111 states and 118 transitions. [2018-01-24 21:01:25,298 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:01:25,299 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 118 transitions. [2018-01-24 21:01:25,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 21:01:25,299 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:01:25,299 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:01:25,299 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:01:25,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2026691576, now seen corresponding path program 1 times [2018-01-24 21:01:25,300 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:01:25,301 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:25,302 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:01:25,302 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:25,302 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:01:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:01:25,318 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:01:25,396 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 21:01:25,396 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:01:25,396 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:01:25,397 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:01:25,398 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:01:25,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:01:25,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:01:25,399 INFO L87 Difference]: Start difference. First operand 111 states and 118 transitions. Second operand 4 states. [2018-01-24 21:01:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:01:25,569 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2018-01-24 21:01:25,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 21:01:25,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 21:01:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:01:25,571 INFO L225 Difference]: With dead ends: 131 [2018-01-24 21:01:25,572 INFO L226 Difference]: Without dead ends: 124 [2018-01-24 21:01:25,573 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 21:01:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-24 21:01:25,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2018-01-24 21:01:25,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-24 21:01:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2018-01-24 21:01:25,584 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 8 [2018-01-24 21:01:25,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:01:25,584 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2018-01-24 21:01:25,584 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:01:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2018-01-24 21:01:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 21:01:25,585 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:01:25,585 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:01:25,585 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:01:25,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1176954998, now seen corresponding path program 1 times [2018-01-24 21:01:25,586 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:01:25,587 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:25,588 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:01:25,588 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:25,588 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:01:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:01:25,608 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:01:25,676 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 21:01:25,676 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:01:25,676 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 21:01:25,676 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:01:25,677 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 21:01:25,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 21:01:25,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 21:01:25,678 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand 4 states. [2018-01-24 21:01:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:01:25,841 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2018-01-24 21:01:25,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:01:25,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-24 21:01:25,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:01:25,843 INFO L225 Difference]: With dead ends: 135 [2018-01-24 21:01:25,843 INFO L226 Difference]: Without dead ends: 123 [2018-01-24 21:01:25,843 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:01:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-01-24 21:01:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2018-01-24 21:01:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-24 21:01:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2018-01-24 21:01:25,853 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 15 [2018-01-24 21:01:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:01:25,854 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2018-01-24 21:01:25,854 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 21:01:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2018-01-24 21:01:25,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 21:01:25,854 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:01:25,855 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:01:25,855 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:01:25,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1176954997, now seen corresponding path program 1 times [2018-01-24 21:01:25,855 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:01:25,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:25,857 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:01:25,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:25,857 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:01:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:01:25,875 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:01:26,018 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 21:01:26,018 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:01:26,018 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 21:01:26,018 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:01:26,019 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 21:01:26,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 21:01:26,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 21:01:26,019 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 7 states. [2018-01-24 21:01:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:01:26,280 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2018-01-24 21:01:26,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:01:26,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-01-24 21:01:26,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:01:26,320 INFO L225 Difference]: With dead ends: 145 [2018-01-24 21:01:26,321 INFO L226 Difference]: Without dead ends: 139 [2018-01-24 21:01:26,321 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 21:01:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-24 21:01:26,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2018-01-24 21:01:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-24 21:01:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2018-01-24 21:01:26,331 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 15 [2018-01-24 21:01:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:01:26,332 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2018-01-24 21:01:26,332 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 21:01:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2018-01-24 21:01:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 21:01:26,333 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:01:26,333 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 21:01:26,334 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:01:26,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1446653265, now seen corresponding path program 1 times [2018-01-24 21:01:26,335 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:01:26,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:26,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:01:26,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:26,336 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:01:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:01:26,351 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:01:26,394 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 21:01:26,394 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:01:26,394 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:01:26,394 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:01:26,395 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 21:01:26,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 21:01:26,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:01:26,395 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand 6 states. [2018-01-24 21:01:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:01:26,622 INFO L93 Difference]: Finished difference Result 186 states and 203 transitions. [2018-01-24 21:01:26,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 21:01:26,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-24 21:01:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:01:26,623 INFO L225 Difference]: With dead ends: 186 [2018-01-24 21:01:26,623 INFO L226 Difference]: Without dead ends: 185 [2018-01-24 21:01:26,624 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-24 21:01:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-01-24 21:01:26,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 115. [2018-01-24 21:01:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-24 21:01:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2018-01-24 21:01:26,633 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 18 [2018-01-24 21:01:26,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:01:26,634 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2018-01-24 21:01:26,634 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 21:01:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2018-01-24 21:01:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 21:01:26,635 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:01:26,635 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 21:01:26,635 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:01:26,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1446653266, now seen corresponding path program 1 times [2018-01-24 21:01:26,635 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:01:26,636 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:26,637 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:01:26,637 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:26,637 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:01:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:01:26,650 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:01:26,790 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 21:01:26,790 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:01:26,791 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:01:26,791 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:01:26,791 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 21:01:26,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 21:01:26,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:01:26,791 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 6 states. [2018-01-24 21:01:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:01:27,007 INFO L93 Difference]: Finished difference Result 196 states and 214 transitions. [2018-01-24 21:01:27,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 21:01:27,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-24 21:01:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:01:27,009 INFO L225 Difference]: With dead ends: 196 [2018-01-24 21:01:27,009 INFO L226 Difference]: Without dead ends: 189 [2018-01-24 21:01:27,009 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-24 21:01:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-24 21:01:27,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 110. [2018-01-24 21:01:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-01-24 21:01:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2018-01-24 21:01:27,016 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 18 [2018-01-24 21:01:27,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:01:27,016 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2018-01-24 21:01:27,016 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 21:01:27,017 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2018-01-24 21:01:27,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 21:01:27,018 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:01:27,018 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:01:27,018 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:01:27,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1020537408, now seen corresponding path program 1 times [2018-01-24 21:01:27,018 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:01:27,019 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:27,020 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:01:27,020 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:27,020 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:01:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:01:27,035 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:01:27,086 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 21:01:27,087 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:01:27,087 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:01:27,087 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:01:27,087 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 21:01:27,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 21:01:27,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:01:27,088 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand 6 states. [2018-01-24 21:01:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:01:27,305 INFO L93 Difference]: Finished difference Result 199 states and 219 transitions. [2018-01-24 21:01:27,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 21:01:27,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-24 21:01:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:01:27,306 INFO L225 Difference]: With dead ends: 199 [2018-01-24 21:01:27,307 INFO L226 Difference]: Without dead ends: 198 [2018-01-24 21:01:27,307 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-24 21:01:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-01-24 21:01:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 109. [2018-01-24 21:01:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-24 21:01:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2018-01-24 21:01:27,313 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 26 [2018-01-24 21:01:27,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:01:27,313 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2018-01-24 21:01:27,313 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 21:01:27,313 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2018-01-24 21:01:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 21:01:27,314 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:01:27,314 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:01:27,314 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:01:27,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1020537407, now seen corresponding path program 1 times [2018-01-24 21:01:27,315 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:01:27,315 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:27,315 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:01:27,316 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:27,316 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:01:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:01:27,331 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:01:27,437 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 21:01:27,437 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:01:27,437 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:01:27,437 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:01:27,438 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 21:01:27,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 21:01:27,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 21:01:27,439 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand 6 states. [2018-01-24 21:01:27,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:01:27,668 INFO L93 Difference]: Finished difference Result 195 states and 214 transitions. [2018-01-24 21:01:27,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 21:01:27,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-24 21:01:27,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:01:27,670 INFO L225 Difference]: With dead ends: 195 [2018-01-24 21:01:27,670 INFO L226 Difference]: Without dead ends: 191 [2018-01-24 21:01:27,670 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-01-24 21:01:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-24 21:01:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 99. [2018-01-24 21:01:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-24 21:01:27,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2018-01-24 21:01:27,676 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 26 [2018-01-24 21:01:27,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:01:27,676 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2018-01-24 21:01:27,676 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 21:01:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2018-01-24 21:01:27,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 21:01:27,677 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:01:27,678 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 21:01:27,678 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:01:27,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1179857763, now seen corresponding path program 1 times [2018-01-24 21:01:27,678 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:01:27,679 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:27,679 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:01:27,679 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:27,679 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:01:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:01:27,687 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:01:27,747 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 21:01:27,748 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 21:01:27,748 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 21:01:27,748 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 21:01:27,748 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 21:01:27,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 21:01:27,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 21:01:27,749 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 5 states. [2018-01-24 21:01:28,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 21:01:28,076 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2018-01-24 21:01:28,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 21:01:28,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-01-24 21:01:28,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 21:01:28,077 INFO L225 Difference]: With dead ends: 150 [2018-01-24 21:01:28,077 INFO L226 Difference]: Without dead ends: 114 [2018-01-24 21:01:28,078 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 21:01:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-24 21:01:28,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2018-01-24 21:01:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-24 21:01:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2018-01-24 21:01:28,083 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 27 [2018-01-24 21:01:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 21:01:28,083 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2018-01-24 21:01:28,083 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 21:01:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2018-01-24 21:01:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 21:01:28,085 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 21:01:28,085 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 21:01:28,085 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr46EnsuresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 21:01:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2127198597, now seen corresponding path program 1 times [2018-01-24 21:01:28,086 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 21:01:28,087 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:28,087 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 21:01:28,087 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 21:01:28,087 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 21:01:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 21:01:28,097 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 21:01:28,184 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 21:01:28,185 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 21:01:28,185 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 21:01:28,186 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-24 21:01:28,187 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [14], [17], [61], [65], [70], [74], [82], [83], [90], [94], [102], [108], [109], [110], [158], [160], [163], [213], [214], [218], [219], [220] [2018-01-24 21:01:28,234 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 21:01:28,234 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