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_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-examples/standard_strcpy_false-valid-deref_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cf7e2d-m [2018-03-29 20:50:20,341 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-03-29 20:50:20,343 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-03-29 20:50:20,358 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-03-29 20:50:20,358 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-03-29 20:50:20,359 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-03-29 20:50:20,360 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-03-29 20:50:20,362 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-03-29 20:50:20,364 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-03-29 20:50:20,365 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-03-29 20:50:20,366 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-03-29 20:50:20,366 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-03-29 20:50:20,367 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-03-29 20:50:20,368 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-03-29 20:50:20,369 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-03-29 20:50:20,371 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-03-29 20:50:20,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-03-29 20:50:20,375 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-03-29 20:50:20,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-03-29 20:50:20,378 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-03-29 20:50:20,380 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-03-29 20:50:20,385 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-03-29 20:50:20,386 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-03-29 20:50:20,386 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-03-29 20:50:20,410 INFO L110 SettingsManager]: Loading preferences was successful [2018-03-29 20:50:20,411 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-03-29 20:50:20,411 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-03-29 20:50:20,411 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-03-29 20:50:20,412 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-03-29 20:50:20,412 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-03-29 20:50:20,412 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-03-29 20:50:20,412 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-03-29 20:50:20,412 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-03-29 20:50:20,413 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-03-29 20:50:20,413 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-03-29 20:50:20,413 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-03-29 20:50:20,414 INFO L133 SettingsManager]: * sizeof long=4 [2018-03-29 20:50:20,414 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-03-29 20:50:20,414 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-03-29 20:50:20,414 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-03-29 20:50:20,414 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-03-29 20:50:20,414 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-03-29 20:50:20,415 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-03-29 20:50:20,415 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-03-29 20:50:20,415 INFO L133 SettingsManager]: * sizeof long double=12 [2018-03-29 20:50:20,415 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-03-29 20:50:20,415 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-03-29 20:50:20,416 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-03-29 20:50:20,416 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-03-29 20:50:20,416 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-29 20:50:20,416 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-03-29 20:50:20,416 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-03-29 20:50:20,417 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-03-29 20:50:20,417 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-03-29 20:50:20,417 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-03-29 20:50:20,417 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:20,417 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-03-29 20:50:20,418 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-03-29 20:50:20,418 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-03-29 20:50:20,418 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-03-29 20:50:20,419 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-03-29 20:50:20,452 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-03-29 20:50:20,465 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-03-29 20:50:20,469 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-03-29 20:50:20,471 INFO L271 PluginConnector]: Initializing CDTParser... [2018-03-29 20:50:20,471 INFO L276 PluginConnector]: CDTParser initialized [2018-03-29 20:50:20,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_false-valid-deref_ground.i [2018-03-29 20:50:20,805 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGb44cdb872 [2018-03-29 20:50:20,918 INFO L287 CDTParser]: IsIndexed: true [2018-03-29 20:50:20,918 INFO L288 CDTParser]: Found 1 translation units. [2018-03-29 20:50:20,919 INFO L168 CDTParser]: Scanning standard_strcpy_false-valid-deref_ground.i [2018-03-29 20:50:20,919 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-03-29 20:50:20,920 INFO L215 ultiparseSymbolTable]: [2018-03-29 20:50:20,920 INFO L218 ultiparseSymbolTable]: Function table: [2018-03-29 20:50:20,920 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert ('__VERIFIER_assert') in standard_strcpy_false-valid-deref_ground.i [2018-03-29 20:50:20,920 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in standard_strcpy_false-valid-deref_ground.i [2018-03-29 20:50:20,920 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-03-29 20:50:20,920 INFO L233 ultiparseSymbolTable]: [2018-03-29 20:50:20,936 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGb44cdb872 [2018-03-29 20:50:20,941 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-03-29 20:50:20,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-03-29 20:50:20,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-03-29 20:50:20,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-03-29 20:50:20,953 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-03-29 20:50:20,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.03 08:50:20" (1/1) ... [2018-03-29 20:50:20,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69424326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:20, skipping insertion in model container [2018-03-29 20:50:20,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.03 08:50:20" (1/1) ... [2018-03-29 20:50:20,971 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-29 20:50:20,984 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-29 20:50:21,116 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-29 20:50:21,133 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-29 20:50:21,137 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 5 non ball SCCs. Number of states in SCCs 5. [2018-03-29 20:50:21,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:21 WrapperNode [2018-03-29 20:50:21,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-03-29 20:50:21,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-03-29 20:50:21,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-03-29 20:50:21,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-03-29 20:50:21,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:21" (1/1) ... [2018-03-29 20:50:21,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:21" (1/1) ... [2018-03-29 20:50:21,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:21" (1/1) ... [2018-03-29 20:50:21,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:21" (1/1) ... [2018-03-29 20:50:21,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:21" (1/1) ... [2018-03-29 20:50:21,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:21" (1/1) ... [2018-03-29 20:50:21,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:21" (1/1) ... [2018-03-29 20:50:21,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-03-29 20:50:21,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-03-29 20:50:21,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-03-29 20:50:21,167 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-03-29 20:50:21,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:21" (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 [2018-03-29 20:50:21,224 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-03-29 20:50:21,224 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-03-29 20:50:21,225 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert [2018-03-29 20:50:21,225 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-03-29 20:50:21,225 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-03-29 20:50:21,225 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert [2018-03-29 20:50:21,225 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-03-29 20:50:21,225 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-03-29 20:50:21,226 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-03-29 20:50:21,440 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-03-29 20:50:21,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.03 08:50:21 BoogieIcfgContainer [2018-03-29 20:50:21,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-03-29 20:50:21,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-03-29 20:50:21,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-03-29 20:50:21,445 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-03-29 20:50:21,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.03 08:50:20" (1/3) ... [2018-03-29 20:50:21,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d27063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.03 08:50:21, skipping insertion in model container [2018-03-29 20:50:21,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 08:50:21" (2/3) ... [2018-03-29 20:50:21,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d27063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.03 08:50:21, skipping insertion in model container [2018-03-29 20:50:21,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.03 08:50:21" (3/3) ... [2018-03-29 20:50:21,449 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_strcpy_false-valid-deref_ground.i [2018-03-29 20:50:21,458 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-03-29 20:50:21,466 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-03-29 20:50:21,505 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-03-29 20:50:21,506 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-03-29 20:50:21,506 INFO L370 AbstractCegarLoop]: Hoare is true [2018-03-29 20:50:21,506 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-03-29 20:50:21,506 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-03-29 20:50:21,507 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-03-29 20:50:21,507 INFO L374 AbstractCegarLoop]: Difference is false [2018-03-29 20:50:21,507 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-03-29 20:50:21,507 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-03-29 20:50:21,508 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-03-29 20:50:21,525 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-03-29 20:50:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-03-29 20:50:21,532 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:21,533 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:21,533 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:21,537 INFO L82 PathProgramCache]: Analyzing trace with hash 442952750, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:21,549 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:21,571 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:21,596 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:21,665 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:50:21,665 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-03-29 20:50:21,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-03-29 20:50:21,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-03-29 20:50:21,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-29 20:50:21,679 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2018-03-29 20:50:21,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:21,774 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2018-03-29 20:50:21,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-03-29 20:50:21,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-03-29 20:50:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:21,785 INFO L225 Difference]: With dead ends: 108 [2018-03-29 20:50:21,786 INFO L226 Difference]: Without dead ends: 71 [2018-03-29 20:50:21,788 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-29 20:50:21,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-03-29 20:50:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 45. [2018-03-29 20:50:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-03-29 20:50:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-03-29 20:50:21,827 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 9 [2018-03-29 20:50:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:21,827 INFO L459 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-03-29 20:50:21,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-03-29 20:50:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-03-29 20:50:21,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-03-29 20:50:21,829 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:21,829 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:21,829 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:21,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1498590240, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:21,837 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:21,847 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:21,861 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:21,922 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:50:21,922 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-03-29 20:50:21,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-03-29 20:50:21,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-03-29 20:50:21,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-29 20:50:21,925 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2018-03-29 20:50:21,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:21,951 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-03-29 20:50:21,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-03-29 20:50:21,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-03-29 20:50:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:21,953 INFO L225 Difference]: With dead ends: 54 [2018-03-29 20:50:21,953 INFO L226 Difference]: Without dead ends: 52 [2018-03-29 20:50:21,954 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-29 20:50:21,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-03-29 20:50:21,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-03-29 20:50:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-03-29 20:50:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-03-29 20:50:21,962 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 15 [2018-03-29 20:50:21,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:21,962 INFO L459 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-03-29 20:50:21,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-03-29 20:50:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-03-29 20:50:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-03-29 20:50:21,964 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:21,964 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:21,964 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:21,964 INFO L82 PathProgramCache]: Analyzing trace with hash -554303570, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:21,977 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:21,987 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:22,050 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:22,151 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:22,151 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-03-29 20:50:22,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-29 20:50:22,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-29 20:50:22,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-03-29 20:50:22,152 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2018-03-29 20:50:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:22,380 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2018-03-29 20:50:22,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-03-29 20:50:22,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-03-29 20:50:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:22,384 INFO L225 Difference]: With dead ends: 178 [2018-03-29 20:50:22,384 INFO L226 Difference]: Without dead ends: 175 [2018-03-29 20:50:22,385 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-03-29 20:50:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-03-29 20:50:22,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 77. [2018-03-29 20:50:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-03-29 20:50:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2018-03-29 20:50:22,399 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 23 [2018-03-29 20:50:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:22,399 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2018-03-29 20:50:22,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-29 20:50:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2018-03-29 20:50:22,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-03-29 20:50:22,401 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:22,401 INFO L355 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] [2018-03-29 20:50:22,401 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1357875333, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:22,414 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:22,425 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-03-29 20:50:22,469 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-03-29 20:50:22,543 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 20:50:22,543 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-03-29 20:50:22,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-03-29 20:50:22,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-03-29 20:50:22,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-03-29 20:50:22,544 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 5 states. [2018-03-29 20:50:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:22,606 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2018-03-29 20:50:22,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-03-29 20:50:22,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-03-29 20:50:22,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:22,608 INFO L225 Difference]: With dead ends: 97 [2018-03-29 20:50:22,608 INFO L226 Difference]: Without dead ends: 77 [2018-03-29 20:50:22,609 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-03-29 20:50:22,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-03-29 20:50:22,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-03-29 20:50:22,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-03-29 20:50:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-03-29 20:50:22,617 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 27 [2018-03-29 20:50:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:22,617 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-03-29 20:50:22,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-03-29 20:50:22,617 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-03-29 20:50:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-03-29 20:50:22,618 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:22,618 INFO L355 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] [2018-03-29 20:50:22,618 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:22,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1112537975, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:22,625 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:22,637 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:22,714 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:22,823 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:22,824 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-03-29 20:50:22,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-03-29 20:50:22,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-03-29 20:50:22,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-03-29 20:50:22,825 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 10 states. [2018-03-29 20:50:22,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:22,955 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2018-03-29 20:50:22,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-03-29 20:50:22,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-03-29 20:50:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:22,957 INFO L225 Difference]: With dead ends: 103 [2018-03-29 20:50:22,957 INFO L226 Difference]: Without dead ends: 77 [2018-03-29 20:50:22,958 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-03-29 20:50:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-03-29 20:50:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-03-29 20:50:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-03-29 20:50:22,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2018-03-29 20:50:22,968 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 34 [2018-03-29 20:50:22,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:22,968 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2018-03-29 20:50:22,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-03-29 20:50:22,968 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2018-03-29 20:50:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-03-29 20:50:22,970 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:22,970 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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] [2018-03-29 20:50:22,971 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:22,971 INFO L82 PathProgramCache]: Analyzing trace with hash 707836933, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:22,978 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:22,990 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-29 20:50:23,009 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-29 20:50:23,083 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:23,083 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-03-29 20:50:23,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-29 20:50:23,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-29 20:50:23,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-03-29 20:50:23,084 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 8 states. [2018-03-29 20:50:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:23,194 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2018-03-29 20:50:23,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-29 20:50:23,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-03-29 20:50:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:23,195 INFO L225 Difference]: With dead ends: 98 [2018-03-29 20:50:23,196 INFO L226 Difference]: Without dead ends: 96 [2018-03-29 20:50:23,196 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-03-29 20:50:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-03-29 20:50:23,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2018-03-29 20:50:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-03-29 20:50:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2018-03-29 20:50:23,203 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 41 [2018-03-29 20:50:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:23,203 INFO L459 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2018-03-29 20:50:23,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-29 20:50:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2018-03-29 20:50:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-03-29 20:50:23,205 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:23,205 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:23,205 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:23,206 INFO L82 PathProgramCache]: Analyzing trace with hash 835962542, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:23,213 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:23,224 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:23,312 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:23,579 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:23,579 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-03-29 20:50:23,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-29 20:50:23,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-29 20:50:23,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-03-29 20:50:23,580 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 16 states. [2018-03-29 20:50:24,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:24,005 INFO L93 Difference]: Finished difference Result 538 states and 610 transitions. [2018-03-29 20:50:24,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-03-29 20:50:24,006 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2018-03-29 20:50:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:24,009 INFO L225 Difference]: With dead ends: 538 [2018-03-29 20:50:24,009 INFO L226 Difference]: Without dead ends: 535 [2018-03-29 20:50:24,010 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2018-03-29 20:50:24,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-03-29 20:50:24,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 149. [2018-03-29 20:50:24,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-03-29 20:50:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2018-03-29 20:50:24,030 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 51 [2018-03-29 20:50:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:24,030 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2018-03-29 20:50:24,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-29 20:50:24,030 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2018-03-29 20:50:24,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-03-29 20:50:24,032 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:24,032 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:24,032 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:24,032 INFO L82 PathProgramCache]: Analyzing trace with hash 476702287, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:24,038 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:24,054 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-03-29 20:50:24,133 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-03-29 20:50:24,198 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:24,198 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-03-29 20:50:24,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-03-29 20:50:24,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-03-29 20:50:24,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-03-29 20:50:24,199 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand 15 states. [2018-03-29 20:50:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:24,284 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2018-03-29 20:50:24,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-03-29 20:50:24,284 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2018-03-29 20:50:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:24,285 INFO L225 Difference]: With dead ends: 185 [2018-03-29 20:50:24,286 INFO L226 Difference]: Without dead ends: 149 [2018-03-29 20:50:24,286 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2018-03-29 20:50:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-03-29 20:50:24,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-03-29 20:50:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-03-29 20:50:24,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2018-03-29 20:50:24,298 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 65 [2018-03-29 20:50:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:24,299 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2018-03-29 20:50:24,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-03-29 20:50:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2018-03-29 20:50:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-03-29 20:50:24,301 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:24,301 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:24,301 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:24,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1796128941, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:24,309 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:24,327 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-03-29 20:50:24,464 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-03-29 20:50:24,572 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:24,572 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2018-03-29 20:50:24,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-03-29 20:50:24,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-03-29 20:50:24,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-03-29 20:50:24,573 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 20 states. [2018-03-29 20:50:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:24,718 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2018-03-29 20:50:24,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-03-29 20:50:24,719 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 72 [2018-03-29 20:50:24,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:24,721 INFO L225 Difference]: With dead ends: 191 [2018-03-29 20:50:24,721 INFO L226 Difference]: Without dead ends: 149 [2018-03-29 20:50:24,722 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2018-03-29 20:50:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-03-29 20:50:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-03-29 20:50:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-03-29 20:50:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2018-03-29 20:50:24,737 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 72 [2018-03-29 20:50:24,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:24,737 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2018-03-29 20:50:24,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-03-29 20:50:24,738 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2018-03-29 20:50:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-03-29 20:50:24,739 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:24,739 INFO L355 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:24,740 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:24,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1364690481, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:24,755 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:24,772 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-03-29 20:50:24,869 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-03-29 20:50:24,988 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:24,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-03-29 20:50:24,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-29 20:50:24,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-29 20:50:24,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-03-29 20:50:24,989 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 16 states. [2018-03-29 20:50:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:25,236 INFO L93 Difference]: Finished difference Result 186 states and 210 transitions. [2018-03-29 20:50:25,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-03-29 20:50:25,236 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2018-03-29 20:50:25,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:25,238 INFO L225 Difference]: With dead ends: 186 [2018-03-29 20:50:25,238 INFO L226 Difference]: Without dead ends: 184 [2018-03-29 20:50:25,239 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-03-29 20:50:25,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-03-29 20:50:25,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2018-03-29 20:50:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-03-29 20:50:25,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2018-03-29 20:50:25,247 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 79 [2018-03-29 20:50:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:25,247 INFO L459 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2018-03-29 20:50:25,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-29 20:50:25,247 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2018-03-29 20:50:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-03-29 20:50:25,249 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:25,249 INFO L355 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:25,250 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:25,250 INFO L82 PathProgramCache]: Analyzing trace with hash 212718766, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:25,256 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:25,273 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:25,391 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:25,813 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:25,814 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-03-29 20:50:25,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-03-29 20:50:25,814 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-03-29 20:50:25,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2018-03-29 20:50:25,815 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand 32 states. [2018-03-29 20:50:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:27,135 INFO L93 Difference]: Finished difference Result 1962 states and 2222 transitions. [2018-03-29 20:50:27,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-03-29 20:50:27,136 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 107 [2018-03-29 20:50:27,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:27,145 INFO L225 Difference]: With dead ends: 1962 [2018-03-29 20:50:27,145 INFO L226 Difference]: Without dead ends: 1959 [2018-03-29 20:50:27,148 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2018-03-29 20:50:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2018-03-29 20:50:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 293. [2018-03-29 20:50:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-03-29 20:50:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 326 transitions. [2018-03-29 20:50:27,189 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 326 transitions. Word has length 107 [2018-03-29 20:50:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:27,189 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 326 transitions. [2018-03-29 20:50:27,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-03-29 20:50:27,189 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 326 transitions. [2018-03-29 20:50:27,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-03-29 20:50:27,190 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:27,191 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:27,191 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:27,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1443326877, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:27,197 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:27,219 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 210 proven. 54 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-03-29 20:50:27,322 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:27,429 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 162 proven. 54 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-03-29 20:50:27,450 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:27,450 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2018-03-29 20:50:27,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-03-29 20:50:27,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-03-29 20:50:27,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2018-03-29 20:50:27,451 INFO L87 Difference]: Start difference. First operand 293 states and 326 transitions. Second operand 25 states. [2018-03-29 20:50:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:27,686 INFO L93 Difference]: Finished difference Result 361 states and 400 transitions. [2018-03-29 20:50:27,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-03-29 20:50:27,686 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 127 [2018-03-29 20:50:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:27,687 INFO L225 Difference]: With dead ends: 361 [2018-03-29 20:50:27,688 INFO L226 Difference]: Without dead ends: 293 [2018-03-29 20:50:27,689 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 225 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2018-03-29 20:50:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-03-29 20:50:27,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-03-29 20:50:27,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-03-29 20:50:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 325 transitions. [2018-03-29 20:50:27,713 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 325 transitions. Word has length 127 [2018-03-29 20:50:27,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:27,713 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 325 transitions. [2018-03-29 20:50:27,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-03-29 20:50:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 325 transitions. [2018-03-29 20:50:27,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-03-29 20:50:27,715 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:27,715 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:27,716 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:27,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1820836249, now seen corresponding path program 7 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:27,724 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:27,747 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 219 proven. 85 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-03-29 20:50:27,885 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 179 proven. 85 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-03-29 20:50:28,041 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:28,041 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 30 [2018-03-29 20:50:28,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-03-29 20:50:28,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-03-29 20:50:28,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2018-03-29 20:50:28,042 INFO L87 Difference]: Start difference. First operand 293 states and 325 transitions. Second operand 30 states. [2018-03-29 20:50:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:28,461 INFO L93 Difference]: Finished difference Result 361 states and 399 transitions. [2018-03-29 20:50:28,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-03-29 20:50:28,461 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 134 [2018-03-29 20:50:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:28,463 INFO L225 Difference]: With dead ends: 361 [2018-03-29 20:50:28,463 INFO L226 Difference]: Without dead ends: 293 [2018-03-29 20:50:28,464 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 233 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2018-03-29 20:50:28,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-03-29 20:50:28,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-03-29 20:50:28,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-03-29 20:50:28,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 324 transitions. [2018-03-29 20:50:28,487 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 324 transitions. Word has length 134 [2018-03-29 20:50:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:28,487 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 324 transitions. [2018-03-29 20:50:28,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-03-29 20:50:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 324 transitions. [2018-03-29 20:50:28,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-03-29 20:50:28,489 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:28,489 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:28,489 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:28,490 INFO L82 PathProgramCache]: Analyzing trace with hash -194377757, now seen corresponding path program 8 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:28,502 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:28,543 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 212 proven. 123 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-03-29 20:50:28,817 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 188 proven. 123 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-03-29 20:50:29,077 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:29,078 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 35 [2018-03-29 20:50:29,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-03-29 20:50:29,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-03-29 20:50:29,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2018-03-29 20:50:29,079 INFO L87 Difference]: Start difference. First operand 293 states and 324 transitions. Second operand 35 states. [2018-03-29 20:50:29,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:29,520 INFO L93 Difference]: Finished difference Result 361 states and 398 transitions. [2018-03-29 20:50:29,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-03-29 20:50:29,520 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 141 [2018-03-29 20:50:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:29,522 INFO L225 Difference]: With dead ends: 361 [2018-03-29 20:50:29,522 INFO L226 Difference]: Without dead ends: 293 [2018-03-29 20:50:29,524 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2018-03-29 20:50:29,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-03-29 20:50:29,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-03-29 20:50:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-03-29 20:50:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 323 transitions. [2018-03-29 20:50:29,554 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 323 transitions. Word has length 141 [2018-03-29 20:50:29,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:29,554 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 323 transitions. [2018-03-29 20:50:29,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-03-29 20:50:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 323 transitions. [2018-03-29 20:50:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-03-29 20:50:29,555 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:29,555 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:29,555 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash -274343193, now seen corresponding path program 9 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:29,562 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:29,586 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 189 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-03-29 20:50:29,867 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 189 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-03-29 20:50:30,196 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:30,196 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 40 [2018-03-29 20:50:30,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-03-29 20:50:30,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-03-29 20:50:30,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1278, Unknown=0, NotChecked=0, Total=1560 [2018-03-29 20:50:30,198 INFO L87 Difference]: Start difference. First operand 293 states and 323 transitions. Second operand 40 states. [2018-03-29 20:50:30,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:30,496 INFO L93 Difference]: Finished difference Result 367 states and 404 transitions. [2018-03-29 20:50:30,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-03-29 20:50:30,496 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 148 [2018-03-29 20:50:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:30,498 INFO L225 Difference]: With dead ends: 367 [2018-03-29 20:50:30,498 INFO L226 Difference]: Without dead ends: 293 [2018-03-29 20:50:30,499 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 249 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=653, Invalid=2209, Unknown=0, NotChecked=0, Total=2862 [2018-03-29 20:50:30,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-03-29 20:50:30,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-03-29 20:50:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-03-29 20:50:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 322 transitions. [2018-03-29 20:50:30,512 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 322 transitions. Word has length 148 [2018-03-29 20:50:30,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:30,513 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 322 transitions. [2018-03-29 20:50:30,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-03-29 20:50:30,513 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 322 transitions. [2018-03-29 20:50:30,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-03-29 20:50:30,515 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:30,515 INFO L355 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:30,515 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:30,515 INFO L82 PathProgramCache]: Analyzing trace with hash 596335459, now seen corresponding path program 10 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:30,529 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:30,554 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-03-29 20:50:30,641 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-03-29 20:50:30,940 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:30,940 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-03-29 20:50:30,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-03-29 20:50:30,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-03-29 20:50:30,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-03-29 20:50:30,941 INFO L87 Difference]: Start difference. First operand 293 states and 322 transitions. Second operand 32 states. [2018-03-29 20:50:32,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:32,151 INFO L93 Difference]: Finished difference Result 362 states and 414 transitions. [2018-03-29 20:50:32,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-03-29 20:50:32,152 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 155 [2018-03-29 20:50:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:32,153 INFO L225 Difference]: With dead ends: 362 [2018-03-29 20:50:32,153 INFO L226 Difference]: Without dead ends: 360 [2018-03-29 20:50:32,155 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2018-03-29 20:50:32,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-03-29 20:50:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 357. [2018-03-29 20:50:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-03-29 20:50:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 394 transitions. [2018-03-29 20:50:32,179 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 394 transitions. Word has length 155 [2018-03-29 20:50:32,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:32,179 INFO L459 AbstractCegarLoop]: Abstraction has 357 states and 394 transitions. [2018-03-29 20:50:32,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-03-29 20:50:32,180 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 394 transitions. [2018-03-29 20:50:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-03-29 20:50:32,182 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:32,182 INFO L355 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:32,182 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:32,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2010902702, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:32,190 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:32,228 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:32,655 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:50:33,641 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:33,641 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-03-29 20:50:33,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-03-29 20:50:33,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-03-29 20:50:33,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2018-03-29 20:50:33,643 INFO L87 Difference]: Start difference. First operand 357 states and 394 transitions. Second operand 64 states. [2018-03-29 20:50:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:39,185 INFO L93 Difference]: Finished difference Result 7498 states and 8470 transitions. [2018-03-29 20:50:39,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-03-29 20:50:39,186 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 219 [2018-03-29 20:50:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:39,219 INFO L225 Difference]: With dead ends: 7498 [2018-03-29 20:50:39,219 INFO L226 Difference]: Without dead ends: 7495 [2018-03-29 20:50:39,224 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2018-03-29 20:50:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7495 states. [2018-03-29 20:50:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7495 to 581. [2018-03-29 20:50:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-29 20:50:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 650 transitions. [2018-03-29 20:50:39,407 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 650 transitions. Word has length 219 [2018-03-29 20:50:39,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:39,408 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 650 transitions. [2018-03-29 20:50:39,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-03-29 20:50:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 650 transitions. [2018-03-29 20:50:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-03-29 20:50:39,410 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:39,410 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:39,410 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:39,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1912252555, now seen corresponding path program 11 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:39,422 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:39,461 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 934 proven. 220 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-03-29 20:50:39,905 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 710 proven. 220 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-03-29 20:50:40,218 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:40,219 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 45 [2018-03-29 20:50:40,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-03-29 20:50:40,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-03-29 20:50:40,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1631, Unknown=0, NotChecked=0, Total=1980 [2018-03-29 20:50:40,220 INFO L87 Difference]: Start difference. First operand 581 states and 650 transitions. Second operand 45 states. [2018-03-29 20:50:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:40,648 INFO L93 Difference]: Finished difference Result 713 states and 796 transitions. [2018-03-29 20:50:40,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-03-29 20:50:40,649 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 251 [2018-03-29 20:50:40,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:40,650 INFO L225 Difference]: With dead ends: 713 [2018-03-29 20:50:40,651 INFO L226 Difference]: Without dead ends: 581 [2018-03-29 20:50:40,652 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 449 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=821, Invalid=2839, Unknown=0, NotChecked=0, Total=3660 [2018-03-29 20:50:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-29 20:50:40,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-29 20:50:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-29 20:50:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 649 transitions. [2018-03-29 20:50:40,723 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 649 transitions. Word has length 251 [2018-03-29 20:50:40,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:40,724 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 649 transitions. [2018-03-29 20:50:40,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-03-29 20:50:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 649 transitions. [2018-03-29 20:50:40,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-03-29 20:50:40,726 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:40,726 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:40,727 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:40,727 INFO L82 PathProgramCache]: Analyzing trace with hash -922504049, now seen corresponding path program 12 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:40,735 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:40,787 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 975 proven. 279 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-03-29 20:50:41,276 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 759 proven. 279 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2018-03-29 20:50:41,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:41,657 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 50 [2018-03-29 20:50:41,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-03-29 20:50:41,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-03-29 20:50:41,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2018-03-29 20:50:41,658 INFO L87 Difference]: Start difference. First operand 581 states and 649 transitions. Second operand 50 states. [2018-03-29 20:50:42,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:42,168 INFO L93 Difference]: Finished difference Result 713 states and 795 transitions. [2018-03-29 20:50:42,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-03-29 20:50:42,168 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 258 [2018-03-29 20:50:42,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:42,170 INFO L225 Difference]: With dead ends: 713 [2018-03-29 20:50:42,170 INFO L226 Difference]: Without dead ends: 581 [2018-03-29 20:50:42,172 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 457 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1008, Invalid=3548, Unknown=0, NotChecked=0, Total=4556 [2018-03-29 20:50:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-29 20:50:42,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-29 20:50:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-29 20:50:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 648 transitions. [2018-03-29 20:50:42,233 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 648 transitions. Word has length 258 [2018-03-29 20:50:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:42,234 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 648 transitions. [2018-03-29 20:50:42,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-03-29 20:50:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 648 transitions. [2018-03-29 20:50:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-03-29 20:50:42,236 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:42,236 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:42,237 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:42,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1400495115, now seen corresponding path program 13 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:42,247 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:42,299 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 1000 proven. 345 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-03-29 20:50:42,879 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 800 proven. 345 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-03-29 20:50:43,325 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:43,326 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 55 [2018-03-29 20:50:43,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-03-29 20:50:43,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-03-29 20:50:43,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2466, Unknown=0, NotChecked=0, Total=2970 [2018-03-29 20:50:43,327 INFO L87 Difference]: Start difference. First operand 581 states and 648 transitions. Second operand 55 states. [2018-03-29 20:50:43,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:43,959 INFO L93 Difference]: Finished difference Result 713 states and 794 transitions. [2018-03-29 20:50:43,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-03-29 20:50:43,959 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 265 [2018-03-29 20:50:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:43,961 INFO L225 Difference]: With dead ends: 713 [2018-03-29 20:50:43,961 INFO L226 Difference]: Without dead ends: 581 [2018-03-29 20:50:43,962 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 465 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1214, Invalid=4336, Unknown=0, NotChecked=0, Total=5550 [2018-03-29 20:50:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-29 20:50:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-29 20:50:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-29 20:50:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 647 transitions. [2018-03-29 20:50:44,006 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 647 transitions. Word has length 265 [2018-03-29 20:50:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:44,007 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 647 transitions. [2018-03-29 20:50:44,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-03-29 20:50:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 647 transitions. [2018-03-29 20:50:44,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-03-29 20:50:44,009 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:44,009 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:44,010 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:44,010 INFO L82 PathProgramCache]: Analyzing trace with hash -685010673, now seen corresponding path program 14 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:44,015 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:44,049 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 1009 proven. 418 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2018-03-29 20:50:44,438 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 833 proven. 418 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-03-29 20:50:44,975 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:44,975 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 60 [2018-03-29 20:50:44,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-03-29 20:50:44,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-03-29 20:50:44,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=2948, Unknown=0, NotChecked=0, Total=3540 [2018-03-29 20:50:44,977 INFO L87 Difference]: Start difference. First operand 581 states and 647 transitions. Second operand 60 states. [2018-03-29 20:50:45,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:45,678 INFO L93 Difference]: Finished difference Result 713 states and 793 transitions. [2018-03-29 20:50:45,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-03-29 20:50:45,678 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 272 [2018-03-29 20:50:45,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:45,680 INFO L225 Difference]: With dead ends: 713 [2018-03-29 20:50:45,680 INFO L226 Difference]: Without dead ends: 581 [2018-03-29 20:50:45,682 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 473 SyntacticMatches, 12 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1439, Invalid=5203, Unknown=0, NotChecked=0, Total=6642 [2018-03-29 20:50:45,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-29 20:50:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-29 20:50:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-29 20:50:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 646 transitions. [2018-03-29 20:50:45,729 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 646 transitions. Word has length 272 [2018-03-29 20:50:45,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:45,730 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 646 transitions. [2018-03-29 20:50:45,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-03-29 20:50:45,730 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 646 transitions. [2018-03-29 20:50:45,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-03-29 20:50:45,732 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:45,733 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:45,733 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:45,733 INFO L82 PathProgramCache]: Analyzing trace with hash -828838005, now seen corresponding path program 15 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:45,739 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:45,779 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 1002 proven. 498 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-03-29 20:50:46,253 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 858 proven. 498 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2018-03-29 20:50:46,871 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:46,871 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 65 [2018-03-29 20:50:46,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-03-29 20:50:46,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-03-29 20:50:46,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=3473, Unknown=0, NotChecked=0, Total=4160 [2018-03-29 20:50:46,872 INFO L87 Difference]: Start difference. First operand 581 states and 646 transitions. Second operand 65 states. [2018-03-29 20:50:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:48,075 INFO L93 Difference]: Finished difference Result 713 states and 792 transitions. [2018-03-29 20:50:48,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-03-29 20:50:48,075 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 279 [2018-03-29 20:50:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:48,078 INFO L225 Difference]: With dead ends: 713 [2018-03-29 20:50:48,078 INFO L226 Difference]: Without dead ends: 581 [2018-03-29 20:50:48,079 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 481 SyntacticMatches, 13 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1683, Invalid=6149, Unknown=0, NotChecked=0, Total=7832 [2018-03-29 20:50:48,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-29 20:50:48,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-29 20:50:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-29 20:50:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 645 transitions. [2018-03-29 20:50:48,115 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 645 transitions. Word has length 279 [2018-03-29 20:50:48,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:48,115 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 645 transitions. [2018-03-29 20:50:48,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-03-29 20:50:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 645 transitions. [2018-03-29 20:50:48,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-03-29 20:50:48,116 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:48,116 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:48,116 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:48,117 INFO L82 PathProgramCache]: Analyzing trace with hash 303533455, now seen corresponding path program 16 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:48,122 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:48,159 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 979 proven. 585 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-03-29 20:50:48,817 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 875 proven. 585 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2018-03-29 20:50:49,476 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:49,487 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 70 [2018-03-29 20:50:49,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-03-29 20:50:49,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-03-29 20:50:49,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=4041, Unknown=0, NotChecked=0, Total=4830 [2018-03-29 20:50:49,489 INFO L87 Difference]: Start difference. First operand 581 states and 645 transitions. Second operand 70 states. [2018-03-29 20:50:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:50,310 INFO L93 Difference]: Finished difference Result 713 states and 791 transitions. [2018-03-29 20:50:50,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-03-29 20:50:50,310 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 286 [2018-03-29 20:50:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:50,312 INFO L225 Difference]: With dead ends: 713 [2018-03-29 20:50:50,312 INFO L226 Difference]: Without dead ends: 581 [2018-03-29 20:50:50,313 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 489 SyntacticMatches, 14 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1946, Invalid=7174, Unknown=0, NotChecked=0, Total=9120 [2018-03-29 20:50:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-29 20:50:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-29 20:50:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-29 20:50:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 644 transitions. [2018-03-29 20:50:50,353 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 644 transitions. Word has length 286 [2018-03-29 20:50:50,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:50,353 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 644 transitions. [2018-03-29 20:50:50,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-03-29 20:50:50,353 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 644 transitions. [2018-03-29 20:50:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-03-29 20:50:50,354 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:50,355 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:50,355 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash 504357643, now seen corresponding path program 17 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:50,363 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:50,406 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 940 proven. 679 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-03-29 20:50:50,970 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 884 proven. 679 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-03-29 20:50:51,698 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:51,698 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 75 [2018-03-29 20:50:51,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-03-29 20:50:51,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-03-29 20:50:51,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=898, Invalid=4652, Unknown=0, NotChecked=0, Total=5550 [2018-03-29 20:50:51,700 INFO L87 Difference]: Start difference. First operand 581 states and 644 transitions. Second operand 75 states. [2018-03-29 20:50:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:52,534 INFO L93 Difference]: Finished difference Result 713 states and 790 transitions. [2018-03-29 20:50:52,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-03-29 20:50:52,534 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 293 [2018-03-29 20:50:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:52,536 INFO L225 Difference]: With dead ends: 713 [2018-03-29 20:50:52,536 INFO L226 Difference]: Without dead ends: 581 [2018-03-29 20:50:52,537 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 497 SyntacticMatches, 15 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2228, Invalid=8278, Unknown=0, NotChecked=0, Total=10506 [2018-03-29 20:50:52,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-29 20:50:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-29 20:50:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-29 20:50:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 643 transitions. [2018-03-29 20:50:52,573 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 643 transitions. Word has length 293 [2018-03-29 20:50:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:52,573 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 643 transitions. [2018-03-29 20:50:52,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-03-29 20:50:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 643 transitions. [2018-03-29 20:50:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-03-29 20:50:52,575 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:52,575 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:52,575 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:52,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1074768399, now seen corresponding path program 18 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:52,585 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:52,620 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 885 proven. 780 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-03-29 20:50:53,255 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 885 proven. 780 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-03-29 20:50:54,071 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:54,071 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 80 [2018-03-29 20:50:54,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-03-29 20:50:54,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-03-29 20:50:54,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1014, Invalid=5306, Unknown=0, NotChecked=0, Total=6320 [2018-03-29 20:50:54,072 INFO L87 Difference]: Start difference. First operand 581 states and 643 transitions. Second operand 80 states. [2018-03-29 20:50:55,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:50:55,079 INFO L93 Difference]: Finished difference Result 719 states and 796 transitions. [2018-03-29 20:50:55,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-03-29 20:50:55,079 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 300 [2018-03-29 20:50:55,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:50:55,081 INFO L225 Difference]: With dead ends: 719 [2018-03-29 20:50:55,081 INFO L226 Difference]: Without dead ends: 581 [2018-03-29 20:50:55,082 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 505 SyntacticMatches, 16 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3095 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2529, Invalid=9461, Unknown=0, NotChecked=0, Total=11990 [2018-03-29 20:50:55,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-03-29 20:50:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-03-29 20:50:55,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-03-29 20:50:55,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 642 transitions. [2018-03-29 20:50:55,118 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 642 transitions. Word has length 300 [2018-03-29 20:50:55,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:50:55,118 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 642 transitions. [2018-03-29 20:50:55,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-03-29 20:50:55,119 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 642 transitions. [2018-03-29 20:50:55,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-03-29 20:50:55,120 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:50:55,120 INFO L355 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:50:55,120 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:50:55,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1519826571, now seen corresponding path program 19 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:50:55,128 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:50:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:50:55,170 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:50:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2018-03-29 20:50:55,513 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:50:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2018-03-29 20:50:56,494 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:50:56,494 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-03-29 20:50:56,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-03-29 20:50:56,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-03-29 20:50:56,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-03-29 20:50:56,495 INFO L87 Difference]: Start difference. First operand 581 states and 642 transitions. Second operand 64 states. [2018-03-29 20:51:00,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:51:00,992 INFO L93 Difference]: Finished difference Result 714 states and 822 transitions. [2018-03-29 20:51:00,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-03-29 20:51:00,992 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 307 [2018-03-29 20:51:00,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:51:00,994 INFO L225 Difference]: With dead ends: 714 [2018-03-29 20:51:00,995 INFO L226 Difference]: Without dead ends: 712 [2018-03-29 20:51:00,995 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-03-29 20:51:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2018-03-29 20:51:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 709. [2018-03-29 20:51:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2018-03-29 20:51:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 786 transitions. [2018-03-29 20:51:01,037 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 786 transitions. Word has length 307 [2018-03-29 20:51:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:51:01,037 INFO L459 AbstractCegarLoop]: Abstraction has 709 states and 786 transitions. [2018-03-29 20:51:01,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-03-29 20:51:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 786 transitions. [2018-03-29 20:51:01,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-03-29 20:51:01,041 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:51:01,041 INFO L355 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:51:01,041 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:51:01,042 INFO L82 PathProgramCache]: Analyzing trace with hash 740305070, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:51:01,047 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:51:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:51:01,091 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:51:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:51:02,351 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:51:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 20:51:06,134 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:51:06,134 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-03-29 20:51:06,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-03-29 20:51:06,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-03-29 20:51:06,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4222, Invalid=12034, Unknown=0, NotChecked=0, Total=16256 [2018-03-29 20:51:06,136 INFO L87 Difference]: Start difference. First operand 709 states and 786 transitions. Second operand 128 states. [2018-03-29 20:51:11,659 WARN L151 SmtUtils]: Spent 249ms on a formula simplification. DAG size of input: 316 DAG size of output 6 [2018-03-29 20:51:12,134 WARN L151 SmtUtils]: Spent 246ms on a formula simplification. DAG size of input: 311 DAG size of output 6 [2018-03-29 20:51:12,600 WARN L151 SmtUtils]: Spent 230ms on a formula simplification. DAG size of input: 306 DAG size of output 6 [2018-03-29 20:51:13,060 WARN L151 SmtUtils]: Spent 226ms on a formula simplification. DAG size of input: 301 DAG size of output 6 [2018-03-29 20:51:13,521 WARN L151 SmtUtils]: Spent 229ms on a formula simplification. DAG size of input: 296 DAG size of output 6 [2018-03-29 20:51:13,966 WARN L151 SmtUtils]: Spent 216ms on a formula simplification. DAG size of input: 291 DAG size of output 6 [2018-03-29 20:51:14,414 WARN L151 SmtUtils]: Spent 216ms on a formula simplification. DAG size of input: 286 DAG size of output 6 [2018-03-29 20:51:14,856 WARN L151 SmtUtils]: Spent 202ms on a formula simplification. DAG size of input: 281 DAG size of output 6 [2018-03-29 20:51:15,305 WARN L151 SmtUtils]: Spent 199ms on a formula simplification. DAG size of input: 276 DAG size of output 6 [2018-03-29 20:51:15,731 WARN L151 SmtUtils]: Spent 190ms on a formula simplification. DAG size of input: 271 DAG size of output 6 [2018-03-29 20:51:16,150 WARN L151 SmtUtils]: Spent 183ms on a formula simplification. DAG size of input: 266 DAG size of output 6 [2018-03-29 20:51:16,560 WARN L151 SmtUtils]: Spent 159ms on a formula simplification. DAG size of input: 261 DAG size of output 6 [2018-03-29 20:51:16,952 WARN L151 SmtUtils]: Spent 167ms on a formula simplification. DAG size of input: 256 DAG size of output 6 [2018-03-29 20:51:17,342 WARN L151 SmtUtils]: Spent 158ms on a formula simplification. DAG size of input: 251 DAG size of output 6 [2018-03-29 20:51:17,758 WARN L151 SmtUtils]: Spent 164ms on a formula simplification. DAG size of input: 246 DAG size of output 6 [2018-03-29 20:51:18,156 WARN L151 SmtUtils]: Spent 158ms on a formula simplification. DAG size of input: 241 DAG size of output 6 [2018-03-29 20:51:18,560 WARN L151 SmtUtils]: Spent 150ms on a formula simplification. DAG size of input: 236 DAG size of output 6 [2018-03-29 20:51:18,948 WARN L151 SmtUtils]: Spent 143ms on a formula simplification. DAG size of input: 231 DAG size of output 6 [2018-03-29 20:51:19,320 WARN L151 SmtUtils]: Spent 131ms on a formula simplification. DAG size of input: 226 DAG size of output 6 [2018-03-29 20:51:19,701 WARN L151 SmtUtils]: Spent 147ms on a formula simplification. DAG size of input: 221 DAG size of output 6 [2018-03-29 20:51:20,063 WARN L151 SmtUtils]: Spent 125ms on a formula simplification. DAG size of input: 216 DAG size of output 6 [2018-03-29 20:51:20,416 WARN L151 SmtUtils]: Spent 120ms on a formula simplification. DAG size of input: 211 DAG size of output 6 [2018-03-29 20:51:20,768 WARN L151 SmtUtils]: Spent 118ms on a formula simplification. DAG size of input: 206 DAG size of output 6 [2018-03-29 20:51:21,126 WARN L151 SmtUtils]: Spent 122ms on a formula simplification. DAG size of input: 201 DAG size of output 6 [2018-03-29 20:51:21,460 WARN L151 SmtUtils]: Spent 107ms on a formula simplification. DAG size of input: 196 DAG size of output 6 [2018-03-29 20:51:21,785 WARN L151 SmtUtils]: Spent 101ms on a formula simplification. DAG size of input: 191 DAG size of output 6 [2018-03-29 20:51:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:51:35,004 INFO L93 Difference]: Finished difference Result 29322 states and 33062 transitions. [2018-03-29 20:51:35,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-03-29 20:51:35,004 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 443 [2018-03-29 20:51:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:51:35,078 INFO L225 Difference]: With dead ends: 29322 [2018-03-29 20:51:35,078 INFO L226 Difference]: Without dead ends: 29319 [2018-03-29 20:51:35,086 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=12158, Invalid=23752, Unknown=0, NotChecked=0, Total=35910 [2018-03-29 20:51:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29319 states. [2018-03-29 20:51:35,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29319 to 1157. [2018-03-29 20:51:35,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:51:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1298 transitions. [2018-03-29 20:51:35,551 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1298 transitions. Word has length 443 [2018-03-29 20:51:35,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:51:35,551 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1298 transitions. [2018-03-29 20:51:35,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-03-29 20:51:35,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1298 transitions. [2018-03-29 20:51:35,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-03-29 20:51:35,555 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:51:35,555 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:51:35,555 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:51:35,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1232187611, now seen corresponding path program 20 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:51:35,564 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:51:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:51:35,680 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:51:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3918 proven. 888 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2018-03-29 20:51:36,567 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:51:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2958 proven. 888 refuted. 0 times theorem prover too weak. 2715 trivial. 0 not checked. [2018-03-29 20:51:37,567 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:51:37,568 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 85 [2018-03-29 20:51:37,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-03-29 20:51:37,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-03-29 20:51:37,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=6003, Unknown=0, NotChecked=0, Total=7140 [2018-03-29 20:51:37,570 INFO L87 Difference]: Start difference. First operand 1157 states and 1298 transitions. Second operand 85 states. [2018-03-29 20:51:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:51:38,834 INFO L93 Difference]: Finished difference Result 1417 states and 1588 transitions. [2018-03-29 20:51:38,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-03-29 20:51:38,835 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 499 [2018-03-29 20:51:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:51:38,837 INFO L225 Difference]: With dead ends: 1417 [2018-03-29 20:51:38,837 INFO L226 Difference]: Without dead ends: 1157 [2018-03-29 20:51:38,839 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 897 SyntacticMatches, 17 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3517 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2849, Invalid=10723, Unknown=0, NotChecked=0, Total=13572 [2018-03-29 20:51:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-29 20:51:38,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-29 20:51:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:51:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1297 transitions. [2018-03-29 20:51:38,988 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1297 transitions. Word has length 499 [2018-03-29 20:51:38,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:51:38,988 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1297 transitions. [2018-03-29 20:51:38,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-03-29 20:51:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1297 transitions. [2018-03-29 20:51:38,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-03-29 20:51:38,991 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:51:38,991 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:51:38,991 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:51:38,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1001423071, now seen corresponding path program 21 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:51:38,997 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:51:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:51:39,064 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:51:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6676 backedges. 4023 proven. 1003 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2018-03-29 20:51:40,035 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:51:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6676 backedges. 3071 proven. 1003 refuted. 0 times theorem prover too weak. 2602 trivial. 0 not checked. [2018-03-29 20:51:41,195 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:51:41,195 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 90 [2018-03-29 20:51:41,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-03-29 20:51:41,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-03-29 20:51:41,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1267, Invalid=6743, Unknown=0, NotChecked=0, Total=8010 [2018-03-29 20:51:41,197 INFO L87 Difference]: Start difference. First operand 1157 states and 1297 transitions. Second operand 90 states. [2018-03-29 20:51:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:51:42,650 INFO L93 Difference]: Finished difference Result 1417 states and 1587 transitions. [2018-03-29 20:51:42,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-03-29 20:51:42,651 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 506 [2018-03-29 20:51:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:51:42,652 INFO L225 Difference]: With dead ends: 1417 [2018-03-29 20:51:42,652 INFO L226 Difference]: Without dead ends: 1157 [2018-03-29 20:51:42,654 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 905 SyntacticMatches, 18 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3966 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3188, Invalid=12064, Unknown=0, NotChecked=0, Total=15252 [2018-03-29 20:51:42,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-29 20:51:42,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-29 20:51:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:51:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1296 transitions. [2018-03-29 20:51:42,796 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1296 transitions. Word has length 506 [2018-03-29 20:51:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:51:42,797 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1296 transitions. [2018-03-29 20:51:42,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-03-29 20:51:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1296 transitions. [2018-03-29 20:51:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2018-03-29 20:51:42,799 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:51:42,799 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:51:42,800 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:51:42,800 INFO L82 PathProgramCache]: Analyzing trace with hash 2074895451, now seen corresponding path program 22 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:51:42,812 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:51:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:51:42,885 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:51:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 4112 proven. 1125 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2018-03-29 20:51:43,835 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:51:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 3176 proven. 1125 refuted. 0 times theorem prover too weak. 2497 trivial. 0 not checked. [2018-03-29 20:51:45,208 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:51:45,208 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 95 [2018-03-29 20:51:45,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-03-29 20:51:45,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-03-29 20:51:45,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1404, Invalid=7526, Unknown=0, NotChecked=0, Total=8930 [2018-03-29 20:51:45,209 INFO L87 Difference]: Start difference. First operand 1157 states and 1296 transitions. Second operand 95 states. [2018-03-29 20:51:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:51:46,628 INFO L93 Difference]: Finished difference Result 1417 states and 1586 transitions. [2018-03-29 20:51:46,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-03-29 20:51:46,628 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 513 [2018-03-29 20:51:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:51:46,631 INFO L225 Difference]: With dead ends: 1417 [2018-03-29 20:51:46,631 INFO L226 Difference]: Without dead ends: 1157 [2018-03-29 20:51:46,633 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 913 SyntacticMatches, 19 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4442 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3546, Invalid=13484, Unknown=0, NotChecked=0, Total=17030 [2018-03-29 20:51:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-29 20:51:46,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-29 20:51:46,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:51:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1295 transitions. [2018-03-29 20:51:46,776 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1295 transitions. Word has length 513 [2018-03-29 20:51:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:51:46,776 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1295 transitions. [2018-03-29 20:51:46,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-03-29 20:51:46,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1295 transitions. [2018-03-29 20:51:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-03-29 20:51:46,779 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:51:46,779 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:51:46,780 INFO L408 AbstractCegarLoop]: === Iteration 31 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:51:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1462558047, now seen corresponding path program 23 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:51:46,787 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:51:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:51:46,886 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:51:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6927 backedges. 4185 proven. 1254 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2018-03-29 20:51:47,912 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:51:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6927 backedges. 3273 proven. 1254 refuted. 0 times theorem prover too weak. 2400 trivial. 0 not checked. [2018-03-29 20:51:49,218 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:51:49,218 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 100 [2018-03-29 20:51:49,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-03-29 20:51:49,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-03-29 20:51:49,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1548, Invalid=8352, Unknown=0, NotChecked=0, Total=9900 [2018-03-29 20:51:49,220 INFO L87 Difference]: Start difference. First operand 1157 states and 1295 transitions. Second operand 100 states. [2018-03-29 20:51:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:51:50,838 INFO L93 Difference]: Finished difference Result 1417 states and 1585 transitions. [2018-03-29 20:51:50,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-03-29 20:51:50,838 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 520 [2018-03-29 20:51:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:51:50,840 INFO L225 Difference]: With dead ends: 1417 [2018-03-29 20:51:50,841 INFO L226 Difference]: Without dead ends: 1157 [2018-03-29 20:51:50,842 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 921 SyntacticMatches, 20 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4945 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3923, Invalid=14983, Unknown=0, NotChecked=0, Total=18906 [2018-03-29 20:51:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-29 20:51:50,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-29 20:51:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:51:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1294 transitions. [2018-03-29 20:51:50,985 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1294 transitions. Word has length 520 [2018-03-29 20:51:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:51:50,985 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1294 transitions. [2018-03-29 20:51:50,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-03-29 20:51:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1294 transitions. [2018-03-29 20:51:50,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-03-29 20:51:50,988 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:51:50,988 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:51:50,988 INFO L408 AbstractCegarLoop]: === Iteration 32 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:51:50,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1721305125, now seen corresponding path program 24 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:51:50,994 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:51:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:51:51,065 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:51:52,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7063 backedges. 4242 proven. 1390 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2018-03-29 20:51:52,227 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:51:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7063 backedges. 3362 proven. 1390 refuted. 0 times theorem prover too weak. 2311 trivial. 0 not checked. [2018-03-29 20:51:53,649 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:51:53,649 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 105 [2018-03-29 20:51:53,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-03-29 20:51:53,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-03-29 20:51:53,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1699, Invalid=9221, Unknown=0, NotChecked=0, Total=10920 [2018-03-29 20:51:53,650 INFO L87 Difference]: Start difference. First operand 1157 states and 1294 transitions. Second operand 105 states. [2018-03-29 20:51:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:51:55,263 INFO L93 Difference]: Finished difference Result 1417 states and 1584 transitions. [2018-03-29 20:51:55,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-03-29 20:51:55,263 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 527 [2018-03-29 20:51:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:51:55,265 INFO L225 Difference]: With dead ends: 1417 [2018-03-29 20:51:55,265 INFO L226 Difference]: Without dead ends: 1157 [2018-03-29 20:51:55,266 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 929 SyntacticMatches, 21 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5475 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4319, Invalid=16561, Unknown=0, NotChecked=0, Total=20880 [2018-03-29 20:51:55,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-29 20:51:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-29 20:51:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:51:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1293 transitions. [2018-03-29 20:51:55,406 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1293 transitions. Word has length 527 [2018-03-29 20:51:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:51:55,407 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1293 transitions. [2018-03-29 20:51:55,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-03-29 20:51:55,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1293 transitions. [2018-03-29 20:51:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-03-29 20:51:55,409 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:51:55,409 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:51:55,409 INFO L408 AbstractCegarLoop]: === Iteration 33 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:51:55,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1905088991, now seen corresponding path program 25 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:51:55,415 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:51:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:51:55,473 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:51:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7206 backedges. 4283 proven. 1533 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-03-29 20:51:56,575 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:51:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7206 backedges. 3443 proven. 1533 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2018-03-29 20:51:58,139 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:51:58,140 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 110 [2018-03-29 20:51:58,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-03-29 20:51:58,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-03-29 20:51:58,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1857, Invalid=10133, Unknown=0, NotChecked=0, Total=11990 [2018-03-29 20:51:58,141 INFO L87 Difference]: Start difference. First operand 1157 states and 1293 transitions. Second operand 110 states. [2018-03-29 20:51:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:51:59,922 INFO L93 Difference]: Finished difference Result 1417 states and 1583 transitions. [2018-03-29 20:51:59,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-03-29 20:51:59,922 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 534 [2018-03-29 20:51:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:51:59,924 INFO L225 Difference]: With dead ends: 1417 [2018-03-29 20:51:59,924 INFO L226 Difference]: Without dead ends: 1157 [2018-03-29 20:51:59,926 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 937 SyntacticMatches, 22 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6032 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4734, Invalid=18218, Unknown=0, NotChecked=0, Total=22952 [2018-03-29 20:51:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-29 20:52:00,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-29 20:52:00,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:52:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1292 transitions. [2018-03-29 20:52:00,063 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1292 transitions. Word has length 534 [2018-03-29 20:52:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:52:00,063 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1292 transitions. [2018-03-29 20:52:00,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-03-29 20:52:00,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1292 transitions. [2018-03-29 20:52:00,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-03-29 20:52:00,065 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:52:00,066 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:52:00,066 INFO L408 AbstractCegarLoop]: === Iteration 34 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:52:00,066 INFO L82 PathProgramCache]: Analyzing trace with hash 358181723, now seen corresponding path program 26 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:52:00,071 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:52:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:52:00,127 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:52:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 4308 proven. 1683 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2018-03-29 20:52:01,320 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:52:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 3516 proven. 1683 refuted. 0 times theorem prover too weak. 2157 trivial. 0 not checked. [2018-03-29 20:52:02,982 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:52:02,982 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 115 [2018-03-29 20:52:02,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-03-29 20:52:02,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-03-29 20:52:02,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2022, Invalid=11088, Unknown=0, NotChecked=0, Total=13110 [2018-03-29 20:52:02,984 INFO L87 Difference]: Start difference. First operand 1157 states and 1292 transitions. Second operand 115 states. [2018-03-29 20:52:04,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:52:04,944 INFO L93 Difference]: Finished difference Result 1417 states and 1582 transitions. [2018-03-29 20:52:04,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-03-29 20:52:04,944 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 541 [2018-03-29 20:52:04,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:52:04,945 INFO L225 Difference]: With dead ends: 1417 [2018-03-29 20:52:04,945 INFO L226 Difference]: Without dead ends: 1157 [2018-03-29 20:52:04,947 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 945 SyntacticMatches, 23 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6616 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5168, Invalid=19954, Unknown=0, NotChecked=0, Total=25122 [2018-03-29 20:52:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-29 20:52:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-29 20:52:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:52:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1291 transitions. [2018-03-29 20:52:05,083 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1291 transitions. Word has length 541 [2018-03-29 20:52:05,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:52:05,083 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1291 transitions. [2018-03-29 20:52:05,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-03-29 20:52:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1291 transitions. [2018-03-29 20:52:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-03-29 20:52:05,087 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:52:05,087 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:52:05,087 INFO L408 AbstractCegarLoop]: === Iteration 35 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:52:05,087 INFO L82 PathProgramCache]: Analyzing trace with hash 421131871, now seen corresponding path program 27 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:52:05,092 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:52:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:52:05,149 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:52:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7513 backedges. 4317 proven. 1840 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2018-03-29 20:52:06,445 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:52:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7513 backedges. 3581 proven. 1840 refuted. 0 times theorem prover too weak. 2092 trivial. 0 not checked. [2018-03-29 20:52:08,283 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:52:08,283 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 120 [2018-03-29 20:52:08,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-03-29 20:52:08,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-03-29 20:52:08,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2194, Invalid=12086, Unknown=0, NotChecked=0, Total=14280 [2018-03-29 20:52:08,285 INFO L87 Difference]: Start difference. First operand 1157 states and 1291 transitions. Second operand 120 states. [2018-03-29 20:52:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:52:10,856 INFO L93 Difference]: Finished difference Result 1417 states and 1581 transitions. [2018-03-29 20:52:10,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-03-29 20:52:10,856 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 548 [2018-03-29 20:52:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:52:10,857 INFO L225 Difference]: With dead ends: 1417 [2018-03-29 20:52:10,857 INFO L226 Difference]: Without dead ends: 1157 [2018-03-29 20:52:10,859 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1141 GetRequests, 953 SyntacticMatches, 24 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7227 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5621, Invalid=21769, Unknown=0, NotChecked=0, Total=27390 [2018-03-29 20:52:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-29 20:52:10,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-29 20:52:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:52:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1290 transitions. [2018-03-29 20:52:10,996 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1290 transitions. Word has length 548 [2018-03-29 20:52:10,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:52:10,997 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1290 transitions. [2018-03-29 20:52:10,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-03-29 20:52:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1290 transitions. [2018-03-29 20:52:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-03-29 20:52:10,999 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:52:10,999 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:52:10,999 INFO L408 AbstractCegarLoop]: === Iteration 36 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:52:11,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1077657307, now seen corresponding path program 28 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:52:11,005 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:52:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:52:11,062 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:52:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 7677 backedges. 4310 proven. 2004 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2018-03-29 20:52:12,461 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:52:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7677 backedges. 3638 proven. 2004 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2018-03-29 20:52:14,409 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:52:14,410 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 125 [2018-03-29 20:52:14,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-03-29 20:52:14,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-03-29 20:52:14,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2373, Invalid=13127, Unknown=0, NotChecked=0, Total=15500 [2018-03-29 20:52:14,411 INFO L87 Difference]: Start difference. First operand 1157 states and 1290 transitions. Second operand 125 states. [2018-03-29 20:52:16,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:52:16,568 INFO L93 Difference]: Finished difference Result 1417 states and 1580 transitions. [2018-03-29 20:52:16,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-03-29 20:52:16,569 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 555 [2018-03-29 20:52:16,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:52:16,570 INFO L225 Difference]: With dead ends: 1417 [2018-03-29 20:52:16,570 INFO L226 Difference]: Without dead ends: 1157 [2018-03-29 20:52:16,573 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 961 SyntacticMatches, 25 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7865 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6093, Invalid=23663, Unknown=0, NotChecked=0, Total=29756 [2018-03-29 20:52:16,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-29 20:52:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-29 20:52:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:52:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1289 transitions. [2018-03-29 20:52:16,731 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1289 transitions. Word has length 555 [2018-03-29 20:52:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:52:16,731 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1289 transitions. [2018-03-29 20:52:16,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-03-29 20:52:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1289 transitions. [2018-03-29 20:52:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-03-29 20:52:16,734 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:52:16,734 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:52:16,734 INFO L408 AbstractCegarLoop]: === Iteration 37 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:52:16,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1041937119, now seen corresponding path program 29 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:52:16,740 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:52:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:52:16,798 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:52:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7848 backedges. 4287 proven. 2175 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2018-03-29 20:52:18,313 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 20:52:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7848 backedges. 3687 proven. 2175 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2018-03-29 20:52:20,518 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 20:52:20,518 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 130 [2018-03-29 20:52:20,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-03-29 20:52:20,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-03-29 20:52:20,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2559, Invalid=14211, Unknown=0, NotChecked=0, Total=16770 [2018-03-29 20:52:20,522 INFO L87 Difference]: Start difference. First operand 1157 states and 1289 transitions. Second operand 130 states. [2018-03-29 20:52:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 20:52:23,081 INFO L93 Difference]: Finished difference Result 1417 states and 1579 transitions. [2018-03-29 20:52:23,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-03-29 20:52:23,081 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 562 [2018-03-29 20:52:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 20:52:23,082 INFO L225 Difference]: With dead ends: 1417 [2018-03-29 20:52:23,082 INFO L226 Difference]: Without dead ends: 1157 [2018-03-29 20:52:23,084 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 969 SyntacticMatches, 26 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8530 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6584, Invalid=25636, Unknown=0, NotChecked=0, Total=32220 [2018-03-29 20:52:23,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-03-29 20:52:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-03-29 20:52:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-03-29 20:52:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1288 transitions. [2018-03-29 20:52:23,236 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1288 transitions. Word has length 562 [2018-03-29 20:52:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 20:52:23,237 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1288 transitions. [2018-03-29 20:52:23,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-03-29 20:52:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1288 transitions. [2018-03-29 20:52:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-03-29 20:52:23,239 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 20:52:23,240 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 20:52:23,240 INFO L408 AbstractCegarLoop]: === Iteration 38 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 20:52:23,240 INFO L82 PathProgramCache]: Analyzing trace with hash -926551461, now seen corresponding path program 30 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 20:52:23,245 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 20:52:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 20:52:23,306 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 20:52:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8026 backedges. 4248 proven. 2353 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2018-03-29 20:52:24,882 INFO L314 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-03-29 20:52:26,886 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-03-29 20:52:26,886 WARN L519 AbstractCegarLoop]: Verification canceled [2018-03-29 20:52:26,890 WARN L197 ceAbstractionStarter]: Timeout [2018-03-29 20:52:26,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.03 08:52:26 BoogieIcfgContainer [2018-03-29 20:52:26,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-03-29 20:52:26,891 INFO L168 Benchmark]: Toolchain (without parser) took 125949.32 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 887.6 MB). Free memory was 250.2 MB in the beginning and 508.7 MB in the end (delta: -258.5 MB). Peak memory consumption was 629.1 MB. Max. memory is 5.3 GB. [2018-03-29 20:52:26,892 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 306.7 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-03-29 20:52:26,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.57 ms. Allocated memory is still 306.7 MB. Free memory was 250.2 MB in the beginning and 240.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-03-29 20:52:26,892 INFO L168 Benchmark]: Boogie Preprocessor took 22.23 ms. Allocated memory is still 306.7 MB. Free memory was 240.9 MB in the beginning and 239.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 5.3 GB. [2018-03-29 20:52:26,892 INFO L168 Benchmark]: RCFGBuilder took 274.31 ms. Allocated memory was 306.7 MB in the beginning and 474.0 MB in the end (delta: 167.2 MB). Free memory was 239.8 MB in the beginning and 444.0 MB in the end (delta: -204.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 5.3 GB. [2018-03-29 20:52:26,893 INFO L168 Benchmark]: TraceAbstraction took 125448.38 ms. Allocated memory was 474.0 MB in the beginning and 1.2 GB in the end (delta: 720.4 MB). Free memory was 444.0 MB in the beginning and 508.7 MB in the end (delta: -64.8 MB). Peak memory consumption was 655.6 MB. Max. memory is 5.3 GB. [2018-03-29 20:52:26,895 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 306.7 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 197.57 ms. Allocated memory is still 306.7 MB. Free memory was 250.2 MB in the beginning and 240.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.23 ms. Allocated memory is still 306.7 MB. Free memory was 240.9 MB in the beginning and 239.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 274.31 ms. Allocated memory was 306.7 MB in the beginning and 474.0 MB in the end (delta: 167.2 MB). Free memory was 239.8 MB in the beginning and 444.0 MB in the end (delta: -204.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 125448.38 ms. Allocated memory was 474.0 MB in the beginning and 1.2 GB in the end (delta: 720.4 MB). Free memory was 444.0 MB in the beginning and 508.7 MB in the end (delta: -64.8 MB). Peak memory consumption was 655.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was analyzing trace of length 570 with TraceHistMax 32, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was analyzing trace of length 570 with TraceHistMax 32, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 8). Cancelled while BasicCegarLoop was analyzing trace of length 570 with TraceHistMax 32, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 8). Cancelled while BasicCegarLoop was analyzing trace of length 570 with TraceHistMax 32, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - TimeoutResultAtElement [Line: 7]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 7). Cancelled while BasicCegarLoop was analyzing trace of length 570 with TraceHistMax 32, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 5 error locations. TIMEOUT Result, 125.3s OverallTime, 38 OverallIterations, 63 TraceHistogramMax, 69.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4663 SDtfs, 41664 SDslu, 98124 SDs, 0 SdLazy, 57643 SolverSat, 6498 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20265 GetRequests, 16967 SyntacticMatches, 351 SemanticMatches, 2947 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82577 ImplicationChecksByTransitivity, 78.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1157occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 37 MinimizatonAttempts, 37267 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 47.1s InterpolantComputationTime, 9706 NumberOfCodeBlocks, 9706 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 19338 ConstructedInterpolants, 0 QuantifiedInterpolants, 25960444 SizeOfPredicates, 754 NumberOfNonLiveVariables, 13448 ConjunctsInSsa, 1418 ConjunctsInUnsatCore, 74 InterpolantComputations, 6 PerfectInterpolantSequences, 140098/215186 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_strcpy_false-valid-deref_ground.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-03-29_20-52-26-904.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_strcpy_false-valid-deref_ground.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-03-29_20-52-26-904.csv Completed graceful shutdown