java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0513_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 23:40:08,617 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 23:40:08,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 23:40:08,634 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 23:40:08,634 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 23:40:08,635 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 23:40:08,636 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 23:40:08,638 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 23:40:08,640 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 23:40:08,641 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 23:40:08,642 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 23:40:08,642 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 23:40:08,643 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 23:40:08,644 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 23:40:08,645 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 23:40:08,647 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 23:40:08,650 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 23:40:08,652 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 23:40:08,653 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 23:40:08,654 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 23:40:08,657 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 23:40:08,657 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 23:40:08,657 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 23:40:08,659 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 23:40:08,659 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 23:40:08,661 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 23:40:08,661 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 23:40:08,662 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 23:40:08,662 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 23:40:08,662 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 23:40:08,663 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 23:40:08,663 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-24 23:40:08,671 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 23:40:08,672 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 23:40:08,672 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 23:40:08,673 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 23:40:08,673 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 23:40:08,673 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 23:40:08,673 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 23:40:08,673 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 23:40:08,674 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 23:40:08,674 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 23:40:08,674 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 23:40:08,674 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 23:40:08,674 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 23:40:08,674 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 23:40:08,675 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 23:40:08,675 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 23:40:08,675 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 23:40:08,675 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 23:40:08,675 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 23:40:08,675 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 23:40:08,675 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 23:40:08,675 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 23:40:08,676 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 23:40:08,676 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 23:40:08,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 23:40:08,676 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 23:40:08,676 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 23:40:08,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 23:40:08,677 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 23:40:08,677 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 23:40:08,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 23:40:08,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 23:40:08,677 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 23:40:08,677 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 23:40:08,678 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 23:40:08,678 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 23:40:08,711 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 23:40:08,722 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 23:40:08,725 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 23:40:08,726 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 23:40:08,726 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 23:40:08,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0513_true-valid-memsafety.i [2018-01-24 23:40:08,877 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 23:40:08,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 23:40:08,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 23:40:08,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 23:40:08,888 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 23:40:08,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:40:08" (1/1) ... [2018-01-24 23:40:08,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449e1d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:08, skipping insertion in model container [2018-01-24 23:40:08,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:40:08" (1/1) ... [2018-01-24 23:40:08,905 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:40:08,942 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:40:09,065 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:40:09,092 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:40:09,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:09 WrapperNode [2018-01-24 23:40:09,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 23:40:09,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 23:40:09,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 23:40:09,103 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 23:40:09,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:09" (1/1) ... [2018-01-24 23:40:09,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:09" (1/1) ... [2018-01-24 23:40:09,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:09" (1/1) ... [2018-01-24 23:40:09,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:09" (1/1) ... [2018-01-24 23:40:09,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:09" (1/1) ... [2018-01-24 23:40:09,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:09" (1/1) ... [2018-01-24 23:40:09,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:09" (1/1) ... [2018-01-24 23:40:09,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 23:40:09,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 23:40:09,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 23:40:09,146 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 23:40:09,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:09" (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 23:40:09,204 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 23:40:09,204 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 23:40:09,204 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 23:40:09,205 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 23:40:09,205 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 23:40:09,205 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 23:40:09,205 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 23:40:09,205 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 23:40:09,205 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 23:40:09,205 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 23:40:09,205 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 23:40:09,205 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 23:40:09,205 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-24 23:40:09,206 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 23:40:09,206 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 23:40:09,206 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 23:40:09,206 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 23:40:09,706 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 23:40:09,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:40:09 BoogieIcfgContainer [2018-01-24 23:40:09,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 23:40:09,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 23:40:09,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 23:40:09,710 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 23:40:09,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 11:40:08" (1/3) ... [2018-01-24 23:40:09,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112e59a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:40:09, skipping insertion in model container [2018-01-24 23:40:09,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:40:09" (2/3) ... [2018-01-24 23:40:09,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112e59a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:40:09, skipping insertion in model container [2018-01-24 23:40:09,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:40:09" (3/3) ... [2018-01-24 23:40:09,714 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0513_true-valid-memsafety.i [2018-01-24 23:40:09,723 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 23:40:09,731 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 59 error locations. [2018-01-24 23:40:09,774 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 23:40:09,774 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 23:40:09,774 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 23:40:09,775 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 23:40:09,775 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 23:40:09,775 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 23:40:09,775 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 23:40:09,775 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 23:40:09,776 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 23:40:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states. [2018-01-24 23:40:09,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-24 23:40:09,801 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:09,802 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:40:09,803 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:09,806 INFO L82 PathProgramCache]: Analyzing trace with hash -894299951, now seen corresponding path program 1 times [2018-01-24 23:40:09,808 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:09,848 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:09,848 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:09,848 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:09,848 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:09,887 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:09,911 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 23:40:09,913 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:09,913 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 23:40:09,913 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:09,916 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-24 23:40:09,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-24 23:40:09,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 23:40:09,929 INFO L87 Difference]: Start difference. First operand 137 states. Second operand 2 states. [2018-01-24 23:40:10,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:10,050 INFO L93 Difference]: Finished difference Result 268 states and 294 transitions. [2018-01-24 23:40:10,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-24 23:40:10,051 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-01-24 23:40:10,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:10,062 INFO L225 Difference]: With dead ends: 268 [2018-01-24 23:40:10,062 INFO L226 Difference]: Without dead ends: 134 [2018-01-24 23:40:10,067 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-24 23:40:10,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-01-24 23:40:10,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-01-24 23:40:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-24 23:40:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2018-01-24 23:40:10,109 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 9 [2018-01-24 23:40:10,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:10,110 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2018-01-24 23:40:10,110 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-24 23:40:10,110 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2018-01-24 23:40:10,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-24 23:40:10,110 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:10,110 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:40:10,110 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:10,111 INFO L82 PathProgramCache]: Analyzing trace with hash -477652767, now seen corresponding path program 1 times [2018-01-24 23:40:10,111 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:10,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:10,112 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:10,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:10,112 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:10,124 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:10,157 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 23:40:10,157 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:10,157 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 23:40:10,157 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:10,159 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 23:40:10,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 23:40:10,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:40:10,160 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand 3 states. [2018-01-24 23:40:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:10,389 INFO L93 Difference]: Finished difference Result 178 states and 188 transitions. [2018-01-24 23:40:10,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 23:40:10,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-24 23:40:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:10,392 INFO L225 Difference]: With dead ends: 178 [2018-01-24 23:40:10,392 INFO L226 Difference]: Without dead ends: 176 [2018-01-24 23:40:10,393 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:40:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-24 23:40:10,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 138. [2018-01-24 23:40:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-24 23:40:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 147 transitions. [2018-01-24 23:40:10,406 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 147 transitions. Word has length 11 [2018-01-24 23:40:10,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:10,407 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 147 transitions. [2018-01-24 23:40:10,407 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 23:40:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 147 transitions. [2018-01-24 23:40:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-24 23:40:10,408 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:10,408 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:40:10,408 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:10,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1922337046, now seen corresponding path program 1 times [2018-01-24 23:40:10,408 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:10,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:10,410 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:10,410 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:10,410 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:10,420 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:10,451 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 23:40:10,451 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:10,452 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:40:10,452 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:10,452 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 23:40:10,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 23:40:10,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:40:10,453 INFO L87 Difference]: Start difference. First operand 138 states and 147 transitions. Second operand 3 states. [2018-01-24 23:40:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:10,522 INFO L93 Difference]: Finished difference Result 282 states and 299 transitions. [2018-01-24 23:40:10,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 23:40:10,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-01-24 23:40:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:10,523 INFO L225 Difference]: With dead ends: 282 [2018-01-24 23:40:10,524 INFO L226 Difference]: Without dead ends: 153 [2018-01-24 23:40:10,525 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:40:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-01-24 23:40:10,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2018-01-24 23:40:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 23:40:10,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 159 transitions. [2018-01-24 23:40:10,533 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 159 transitions. Word has length 12 [2018-01-24 23:40:10,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:10,533 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 159 transitions. [2018-01-24 23:40:10,533 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 23:40:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 159 transitions. [2018-01-24 23:40:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 23:40:10,533 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:10,533 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:40:10,534 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:10,534 INFO L82 PathProgramCache]: Analyzing trace with hash 537460283, now seen corresponding path program 1 times [2018-01-24 23:40:10,534 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:10,535 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:10,535 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:10,535 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:10,535 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:10,549 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:10,593 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 23:40:10,593 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:10,593 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:40:10,594 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:10,594 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:40:10,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:40:10,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:40:10,595 INFO L87 Difference]: Start difference. First operand 147 states and 159 transitions. Second operand 4 states. [2018-01-24 23:40:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:10,804 INFO L93 Difference]: Finished difference Result 223 states and 239 transitions. [2018-01-24 23:40:10,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:40:10,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 23:40:10,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:10,807 INFO L225 Difference]: With dead ends: 223 [2018-01-24 23:40:10,807 INFO L226 Difference]: Without dead ends: 219 [2018-01-24 23:40:10,808 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 23:40:10,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-24 23:40:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 149. [2018-01-24 23:40:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-24 23:40:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2018-01-24 23:40:10,819 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 13 [2018-01-24 23:40:10,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:10,820 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2018-01-24 23:40:10,820 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:40:10,820 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2018-01-24 23:40:10,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 23:40:10,820 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:10,821 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:40:10,821 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:10,821 INFO L82 PathProgramCache]: Analyzing trace with hash 537460284, now seen corresponding path program 1 times [2018-01-24 23:40:10,821 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:10,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:10,822 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:10,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:10,822 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:10,833 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:10,891 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 23:40:10,892 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:10,892 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:40:10,892 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:10,892 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:40:10,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:40:10,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:40:10,893 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 4 states. [2018-01-24 23:40:11,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:11,008 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2018-01-24 23:40:11,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:40:11,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 23:40:11,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:11,010 INFO L225 Difference]: With dead ends: 149 [2018-01-24 23:40:11,010 INFO L226 Difference]: Without dead ends: 147 [2018-01-24 23:40:11,010 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 23:40:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-24 23:40:11,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-01-24 23:40:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 23:40:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 159 transitions. [2018-01-24 23:40:11,018 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 159 transitions. Word has length 13 [2018-01-24 23:40:11,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:11,019 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 159 transitions. [2018-01-24 23:40:11,019 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:40:11,019 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 159 transitions. [2018-01-24 23:40:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 23:40:11,019 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:11,019 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:40:11,019 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:11,020 INFO L82 PathProgramCache]: Analyzing trace with hash 632206755, now seen corresponding path program 1 times [2018-01-24 23:40:11,020 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:11,020 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:11,020 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:11,020 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:11,021 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:11,035 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:11,061 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 23:40:11,061 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:11,061 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:40:11,061 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:11,062 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:40:11,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:40:11,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:40:11,062 INFO L87 Difference]: Start difference. First operand 147 states and 159 transitions. Second operand 4 states. [2018-01-24 23:40:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:11,192 INFO L93 Difference]: Finished difference Result 185 states and 198 transitions. [2018-01-24 23:40:11,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:40:11,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-01-24 23:40:11,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:11,193 INFO L225 Difference]: With dead ends: 185 [2018-01-24 23:40:11,193 INFO L226 Difference]: Without dead ends: 181 [2018-01-24 23:40:11,194 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 23:40:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-24 23:40:11,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 143. [2018-01-24 23:40:11,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-24 23:40:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 155 transitions. [2018-01-24 23:40:11,201 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 155 transitions. Word has length 20 [2018-01-24 23:40:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:11,202 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 155 transitions. [2018-01-24 23:40:11,202 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:40:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 155 transitions. [2018-01-24 23:40:11,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 23:40:11,203 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:11,203 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] [2018-01-24 23:40:11,203 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:11,203 INFO L82 PathProgramCache]: Analyzing trace with hash 632206756, now seen corresponding path program 1 times [2018-01-24 23:40:11,203 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:11,204 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:11,205 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:11,205 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:11,205 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:11,219 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:11,259 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 23:40:11,259 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:11,260 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:40:11,260 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:11,260 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:40:11,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:40:11,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:40:11,261 INFO L87 Difference]: Start difference. First operand 143 states and 155 transitions. Second operand 4 states. [2018-01-24 23:40:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:11,380 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2018-01-24 23:40:11,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:40:11,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-01-24 23:40:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:11,382 INFO L225 Difference]: With dead ends: 143 [2018-01-24 23:40:11,382 INFO L226 Difference]: Without dead ends: 140 [2018-01-24 23:40:11,383 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 23:40:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-24 23:40:11,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-01-24 23:40:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-24 23:40:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2018-01-24 23:40:11,388 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 20 [2018-01-24 23:40:11,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:11,389 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2018-01-24 23:40:11,389 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:40:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2018-01-24 23:40:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 23:40:11,390 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:11,390 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] [2018-01-24 23:40:11,390 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:11,390 INFO L82 PathProgramCache]: Analyzing trace with hash -145487102, now seen corresponding path program 1 times [2018-01-24 23:40:11,390 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:11,391 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:11,391 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:11,391 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:11,391 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:11,410 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:40:11,457 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:11,457 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 23:40:11,457 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:11,458 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:40:11,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:40:11,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:40:11,459 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand 5 states. [2018-01-24 23:40:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:11,625 INFO L93 Difference]: Finished difference Result 355 states and 389 transitions. [2018-01-24 23:40:11,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:40:11,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-24 23:40:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:11,627 INFO L225 Difference]: With dead ends: 355 [2018-01-24 23:40:11,628 INFO L226 Difference]: Without dead ends: 234 [2018-01-24 23:40:11,629 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 23:40:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-01-24 23:40:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 140. [2018-01-24 23:40:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-24 23:40:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2018-01-24 23:40:11,635 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 28 [2018-01-24 23:40:11,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:11,636 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2018-01-24 23:40:11,636 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:40:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2018-01-24 23:40:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 23:40:11,636 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:11,637 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] [2018-01-24 23:40:11,637 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:11,637 INFO L82 PathProgramCache]: Analyzing trace with hash -215136023, now seen corresponding path program 1 times [2018-01-24 23:40:11,637 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:11,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:11,638 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:11,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:11,638 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:11,652 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:40:11,691 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:11,691 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:40:11,692 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:11,692 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:40:11,692 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:40:11,692 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:40:11,693 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 5 states. [2018-01-24 23:40:11,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:11,807 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2018-01-24 23:40:11,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:40:11,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 23:40:11,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:11,808 INFO L225 Difference]: With dead ends: 146 [2018-01-24 23:40:11,808 INFO L226 Difference]: Without dead ends: 137 [2018-01-24 23:40:11,808 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-24 23:40:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-01-24 23:40:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2018-01-24 23:40:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-01-24 23:40:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2018-01-24 23:40:11,814 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 29 [2018-01-24 23:40:11,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:11,814 INFO L432 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2018-01-24 23:40:11,815 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:40:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2018-01-24 23:40:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 23:40:11,815 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:11,815 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] [2018-01-24 23:40:11,815 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash -215136022, now seen corresponding path program 1 times [2018-01-24 23:40:11,816 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:11,816 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:11,816 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:11,816 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:11,817 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:11,831 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:40:11,900 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:11,900 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 23:40:11,900 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:11,900 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 23:40:11,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 23:40:11,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 23:40:11,901 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand 5 states. [2018-01-24 23:40:12,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:12,125 INFO L93 Difference]: Finished difference Result 220 states and 239 transitions. [2018-01-24 23:40:12,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:40:12,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 23:40:12,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:12,131 INFO L225 Difference]: With dead ends: 220 [2018-01-24 23:40:12,131 INFO L226 Difference]: Without dead ends: 210 [2018-01-24 23:40:12,131 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 23:40:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-24 23:40:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 174. [2018-01-24 23:40:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-24 23:40:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 216 transitions. [2018-01-24 23:40:12,139 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 216 transitions. Word has length 29 [2018-01-24 23:40:12,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:12,140 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 216 transitions. [2018-01-24 23:40:12,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 23:40:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 216 transitions. [2018-01-24 23:40:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 23:40:12,141 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:12,141 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] [2018-01-24 23:40:12,142 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:12,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1844152872, now seen corresponding path program 1 times [2018-01-24 23:40:12,142 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:12,143 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:12,143 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:12,143 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:12,143 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:12,162 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:12,416 WARN L146 SmtUtils]: Spent 114ms on a formula simplification. DAG size of input: 26 DAG size of output 21 [2018-01-24 23:40:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:40:12,554 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:12,554 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 23:40:12,554 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:12,555 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 23:40:12,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 23:40:12,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 23:40:12,555 INFO L87 Difference]: Start difference. First operand 174 states and 216 transitions. Second operand 6 states. [2018-01-24 23:40:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:12,755 INFO L93 Difference]: Finished difference Result 329 states and 413 transitions. [2018-01-24 23:40:12,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 23:40:12,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-01-24 23:40:12,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:12,757 INFO L225 Difference]: With dead ends: 329 [2018-01-24 23:40:12,757 INFO L226 Difference]: Without dead ends: 202 [2018-01-24 23:40:12,757 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-24 23:40:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-24 23:40:12,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 183. [2018-01-24 23:40:12,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-24 23:40:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 226 transitions. [2018-01-24 23:40:12,765 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 226 transitions. Word has length 34 [2018-01-24 23:40:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:12,765 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 226 transitions. [2018-01-24 23:40:12,765 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 23:40:12,765 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 226 transitions. [2018-01-24 23:40:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-24 23:40:12,766 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:12,766 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:40:12,766 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash -525574038, now seen corresponding path program 1 times [2018-01-24 23:40:12,767 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:12,768 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:12,768 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:12,768 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:12,768 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:12,784 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:40:13,094 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:13,094 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 23:40:13,094 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:13,095 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 23:40:13,095 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 23:40:13,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-01-24 23:40:13,095 INFO L87 Difference]: Start difference. First operand 183 states and 226 transitions. Second operand 11 states. [2018-01-24 23:40:13,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:13,670 INFO L93 Difference]: Finished difference Result 246 states and 291 transitions. [2018-01-24 23:40:13,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-24 23:40:13,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2018-01-24 23:40:13,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:13,672 INFO L225 Difference]: With dead ends: 246 [2018-01-24 23:40:13,672 INFO L226 Difference]: Without dead ends: 245 [2018-01-24 23:40:13,673 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2018-01-24 23:40:13,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-24 23:40:13,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 189. [2018-01-24 23:40:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-24 23:40:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 234 transitions. [2018-01-24 23:40:13,682 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 234 transitions. Word has length 36 [2018-01-24 23:40:13,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:13,683 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 234 transitions. [2018-01-24 23:40:13,683 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 23:40:13,683 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 234 transitions. [2018-01-24 23:40:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-24 23:40:13,684 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:13,684 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 23:40:13,684 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:13,684 INFO L82 PathProgramCache]: Analyzing trace with hash -525574037, now seen corresponding path program 1 times [2018-01-24 23:40:13,685 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:13,686 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:13,686 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:13,686 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:13,686 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:13,705 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:40:14,020 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:14,020 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 23:40:14,020 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:14,020 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 23:40:14,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 23:40:14,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-01-24 23:40:14,021 INFO L87 Difference]: Start difference. First operand 189 states and 234 transitions. Second operand 11 states. [2018-01-24 23:40:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:14,458 INFO L93 Difference]: Finished difference Result 222 states and 265 transitions. [2018-01-24 23:40:14,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-24 23:40:14,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2018-01-24 23:40:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:14,460 INFO L225 Difference]: With dead ends: 222 [2018-01-24 23:40:14,460 INFO L226 Difference]: Without dead ends: 221 [2018-01-24 23:40:14,461 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2018-01-24 23:40:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-24 23:40:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 189. [2018-01-24 23:40:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-24 23:40:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 233 transitions. [2018-01-24 23:40:14,471 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 233 transitions. Word has length 36 [2018-01-24 23:40:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:14,471 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 233 transitions. [2018-01-24 23:40:14,471 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 23:40:14,471 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 233 transitions. [2018-01-24 23:40:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-24 23:40:14,472 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:14,472 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] [2018-01-24 23:40:14,473 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:14,473 INFO L82 PathProgramCache]: Analyzing trace with hash 887072562, now seen corresponding path program 1 times [2018-01-24 23:40:14,473 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:14,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:14,474 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:14,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:14,474 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:14,487 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:14,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:40:14,668 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:14,668 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 23:40:14,668 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:14,669 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 23:40:14,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 23:40:14,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-01-24 23:40:14,669 INFO L87 Difference]: Start difference. First operand 189 states and 233 transitions. Second operand 10 states. [2018-01-24 23:40:14,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:14,844 INFO L93 Difference]: Finished difference Result 209 states and 252 transitions. [2018-01-24 23:40:14,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 23:40:14,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-01-24 23:40:14,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:14,846 INFO L225 Difference]: With dead ends: 209 [2018-01-24 23:40:14,846 INFO L226 Difference]: Without dead ends: 206 [2018-01-24 23:40:14,847 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2018-01-24 23:40:14,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-01-24 23:40:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 189. [2018-01-24 23:40:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-24 23:40:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 232 transitions. [2018-01-24 23:40:14,858 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 232 transitions. Word has length 37 [2018-01-24 23:40:14,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:14,858 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 232 transitions. [2018-01-24 23:40:14,858 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 23:40:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 232 transitions. [2018-01-24 23:40:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-24 23:40:14,859 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:14,859 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] [2018-01-24 23:40:14,859 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:14,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1729495531, now seen corresponding path program 1 times [2018-01-24 23:40:14,860 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:14,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:14,860 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:14,861 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:14,861 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:14,873 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:40:15,054 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:15,054 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 23:40:15,054 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:15,055 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 23:40:15,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 23:40:15,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-01-24 23:40:15,055 INFO L87 Difference]: Start difference. First operand 189 states and 232 transitions. Second operand 11 states. [2018-01-24 23:40:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:15,521 INFO L93 Difference]: Finished difference Result 242 states and 287 transitions. [2018-01-24 23:40:15,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-24 23:40:15,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-01-24 23:40:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:15,523 INFO L225 Difference]: With dead ends: 242 [2018-01-24 23:40:15,523 INFO L226 Difference]: Without dead ends: 241 [2018-01-24 23:40:15,524 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2018-01-24 23:40:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-01-24 23:40:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 191. [2018-01-24 23:40:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-24 23:40:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 235 transitions. [2018-01-24 23:40:15,535 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 235 transitions. Word has length 38 [2018-01-24 23:40:15,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:15,535 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 235 transitions. [2018-01-24 23:40:15,535 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 23:40:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 235 transitions. [2018-01-24 23:40:15,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-24 23:40:15,536 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:15,536 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] [2018-01-24 23:40:15,537 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:15,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1729495532, now seen corresponding path program 1 times [2018-01-24 23:40:15,537 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:15,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:15,537 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:15,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:15,538 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:15,548 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-24 23:40:15,576 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:40:15,576 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 23:40:15,577 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:40:15,577 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:40:15,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:40:15,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:40:15,577 INFO L87 Difference]: Start difference. First operand 191 states and 235 transitions. Second operand 4 states. [2018-01-24 23:40:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:40:15,736 INFO L93 Difference]: Finished difference Result 247 states and 305 transitions. [2018-01-24 23:40:15,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 23:40:15,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-01-24 23:40:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:40:15,737 INFO L225 Difference]: With dead ends: 247 [2018-01-24 23:40:15,737 INFO L226 Difference]: Without dead ends: 244 [2018-01-24 23:40:15,738 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 23:40:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-01-24 23:40:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 197. [2018-01-24 23:40:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-01-24 23:40:15,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 247 transitions. [2018-01-24 23:40:15,750 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 247 transitions. Word has length 38 [2018-01-24 23:40:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:40:15,750 INFO L432 AbstractCegarLoop]: Abstraction has 197 states and 247 transitions. [2018-01-24 23:40:15,750 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:40:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 247 transitions. [2018-01-24 23:40:15,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-24 23:40:15,751 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:40:15,751 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 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] [2018-01-24 23:40:15,752 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 23:40:15,752 INFO L82 PathProgramCache]: Analyzing trace with hash 973830348, now seen corresponding path program 1 times [2018-01-24 23:40:15,752 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:40:15,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:15,753 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:40:15,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:40:15,753 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:40:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:40:15,767 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:40:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 23:40:16,637 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 23:40:16,662 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 23:40:16,663 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-01-24 23:40:16,664 INFO L201 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [12], [13], [18], [20], [23], [24], [27], [28], [29], [44], [45], [48], [50], [53], [60], [64], [66], [71], [170], [173], [174], [180], [186], [187], [188], [190], [191], [200], [201], [205], [206], [207] [2018-01-24 23:40:16,707 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 23:40:16,708 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