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 0.1.23-35b68b2 [2018-04-06 19:56:29,553 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-06 19:56:29,554 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-06 19:56:29,568 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-06 19:56:29,568 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-06 19:56:29,569 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-06 19:56:29,570 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-06 19:56:29,572 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-06 19:56:29,574 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-06 19:56:29,574 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-06 19:56:29,575 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-06 19:56:29,575 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-06 19:56:29,576 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-06 19:56:29,578 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-06 19:56:29,578 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-06 19:56:29,581 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-06 19:56:29,583 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-06 19:56:29,584 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-06 19:56:29,586 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-06 19:56:29,587 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-06 19:56:29,589 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-04-06 19:56:29,594 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-06 19:56:29,595 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-06 19:56:29,595 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 [2018-04-06 19:56:29,619 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-06 19:56:29,619 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-06 19:56:29,620 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-06 19:56:29,620 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-06 19:56:29,621 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-06 19:56:29,621 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-06 19:56:29,621 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-06 19:56:29,621 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-06 19:56:29,621 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-06 19:56:29,621 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-06 19:56:29,622 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-06 19:56:29,622 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-06 19:56:29,622 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-06 19:56:29,622 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-06 19:56:29,623 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-06 19:56:29,623 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-06 19:56:29,623 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-06 19:56:29,623 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-06 19:56:29,623 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-06 19:56:29,623 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-06 19:56:29,624 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-06 19:56:29,624 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-06 19:56:29,624 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-06 19:56:29,624 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-06 19:56:29,624 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-06 19:56:29,625 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-06 19:56:29,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-06 19:56:29,625 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-06 19:56:29,625 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-06 19:56:29,625 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-06 19:56:29,626 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-06 19:56:29,626 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-06 19:56:29,626 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 19:56:29,626 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-06 19:56:29,627 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-06 19:56:29,627 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-06 19:56:29,627 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-06 19:56:29,627 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-06 19:56:29,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-06 19:56:29,672 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-06 19:56:29,675 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-06 19:56:29,676 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-06 19:56:29,676 INFO L276 PluginConnector]: CDTParser initialized [2018-04-06 19:56:29,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_false-valid-deref_ground.i [2018-04-06 19:56:30,026 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG2c4df5eee [2018-04-06 19:56:30,147 INFO L287 CDTParser]: IsIndexed: true [2018-04-06 19:56:30,147 INFO L288 CDTParser]: Found 1 translation units. [2018-04-06 19:56:30,147 INFO L168 CDTParser]: Scanning standard_strcpy_false-valid-deref_ground.i [2018-04-06 19:56:30,148 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-06 19:56:30,148 INFO L215 ultiparseSymbolTable]: [2018-04-06 19:56:30,148 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-06 19:56:30,149 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert ('__VERIFIER_assert') in standard_strcpy_false-valid-deref_ground.i [2018-04-06 19:56:30,149 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in standard_strcpy_false-valid-deref_ground.i [2018-04-06 19:56:30,149 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-06 19:56:30,149 INFO L233 ultiparseSymbolTable]: [2018-04-06 19:56:30,164 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG2c4df5eee [2018-04-06 19:56:30,168 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-06 19:56:30,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-06 19:56:30,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-06 19:56:30,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-06 19:56:30,176 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-06 19:56:30,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:56:30" (1/1) ... [2018-04-06 19:56:30,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f1e819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30, skipping insertion in model container [2018-04-06 19:56:30,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:56:30" (1/1) ... [2018-04-06 19:56:30,191 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-06 19:56:30,201 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-06 19:56:30,317 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-06 19:56:30,333 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-06 19:56:30,336 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 5 non ball SCCs. Number of states in SCCs 5. [2018-04-06 19:56:30,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30 WrapperNode [2018-04-06 19:56:30,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-06 19:56:30,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-06 19:56:30,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-06 19:56:30,343 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-06 19:56:30,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30" (1/1) ... [2018-04-06 19:56:30,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30" (1/1) ... [2018-04-06 19:56:30,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30" (1/1) ... [2018-04-06 19:56:30,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30" (1/1) ... [2018-04-06 19:56:30,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30" (1/1) ... [2018-04-06 19:56:30,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30" (1/1) ... [2018-04-06 19:56:30,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30" (1/1) ... [2018-04-06 19:56:30,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-06 19:56:30,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-06 19:56:30,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-06 19:56:30,366 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-06 19:56:30,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30" (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 [2018-04-06 19:56:30,425 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-06 19:56:30,425 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-06 19:56:30,425 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert [2018-04-06 19:56:30,425 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-06 19:56:30,426 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-04-06 19:56:30,426 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert [2018-04-06 19:56:30,426 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-06 19:56:30,426 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-06 19:56:30,426 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-06 19:56:30,603 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-06 19:56:30,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:56:30 BoogieIcfgContainer [2018-04-06 19:56:30,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-06 19:56:30,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-06 19:56:30,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-06 19:56:30,606 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-06 19:56:30,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 07:56:30" (1/3) ... [2018-04-06 19:56:30,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd6cc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:56:30, skipping insertion in model container [2018-04-06 19:56:30,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:56:30" (2/3) ... [2018-04-06 19:56:30,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd6cc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:56:30, skipping insertion in model container [2018-04-06 19:56:30,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:56:30" (3/3) ... [2018-04-06 19:56:30,609 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_strcpy_false-valid-deref_ground.i [2018-04-06 19:56:30,616 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-06 19:56:30,621 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-04-06 19:56:30,658 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-06 19:56:30,658 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-06 19:56:30,658 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-06 19:56:30,659 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-06 19:56:30,659 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-06 19:56:30,659 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-06 19:56:30,659 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-06 19:56:30,659 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-06 19:56:30,659 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-06 19:56:30,660 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-06 19:56:30,677 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-04-06 19:56:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-04-06 19:56:30,684 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:30,685 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:56:30,686 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:30,690 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 [2018-04-06 19:56:30,704 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:30,726 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:30,749 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:30,818 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 19:56:30,818 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-06 19:56:30,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-06 19:56:30,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-06 19:56:30,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-06 19:56:30,832 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2018-04-06 19:56:30,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:30,929 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2018-04-06 19:56:30,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-06 19:56:30,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-04-06 19:56:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:30,940 INFO L225 Difference]: With dead ends: 108 [2018-04-06 19:56:30,940 INFO L226 Difference]: Without dead ends: 71 [2018-04-06 19:56:30,944 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 [2018-04-06 19:56:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-04-06 19:56:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 45. [2018-04-06 19:56:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-04-06 19:56:30,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-04-06 19:56:30,981 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 9 [2018-04-06 19:56:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:30,982 INFO L459 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-04-06 19:56:30,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-06 19:56:30,982 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-04-06 19:56:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-04-06 19:56:30,983 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:30,983 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:56:30,983 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:30,984 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 [2018-04-06 19:56:30,995 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:31,005 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:31,016 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:31,077 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 19:56:31,077 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-06 19:56:31,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-06 19:56:31,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-06 19:56:31,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-06 19:56:31,079 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2018-04-06 19:56:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:31,100 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-04-06 19:56:31,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-06 19:56:31,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-04-06 19:56:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:31,102 INFO L225 Difference]: With dead ends: 54 [2018-04-06 19:56:31,102 INFO L226 Difference]: Without dead ends: 52 [2018-04-06 19:56:31,104 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 [2018-04-06 19:56:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-04-06 19:56:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-04-06 19:56:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-04-06 19:56:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-04-06 19:56:31,111 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 15 [2018-04-06 19:56:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:31,112 INFO L459 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-04-06 19:56:31,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-06 19:56:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-04-06 19:56:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-06 19:56:31,113 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:31,113 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:56:31,113 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:31,113 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 [2018-04-06 19:56:31,120 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:31,128 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:31,178 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:31,283 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:31,283 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-06 19:56:31,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-06 19:56:31,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-06 19:56:31,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-04-06 19:56:31,285 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2018-04-06 19:56:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:31,523 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2018-04-06 19:56:31,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-06 19:56:31,524 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-04-06 19:56:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:31,527 INFO L225 Difference]: With dead ends: 178 [2018-04-06 19:56:31,527 INFO L226 Difference]: Without dead ends: 175 [2018-04-06 19:56:31,528 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-04-06 19:56:31,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-04-06 19:56:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 77. [2018-04-06 19:56:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-06 19:56:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2018-04-06 19:56:31,543 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 23 [2018-04-06 19:56:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:31,543 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2018-04-06 19:56:31,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-06 19:56:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2018-04-06 19:56:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-04-06 19:56:31,545 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:31,545 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] [2018-04-06 19:56:31,545 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:31,545 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 [2018-04-06 19:56:31,553 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:31,566 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-04-06 19:56:31,590 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-04-06 19:56:31,643 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 19:56:31,643 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-04-06 19:56:31,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-06 19:56:31,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-06 19:56:31,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-06 19:56:31,644 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 5 states. [2018-04-06 19:56:31,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:31,747 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2018-04-06 19:56:31,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-06 19:56:31,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-04-06 19:56:31,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:31,750 INFO L225 Difference]: With dead ends: 97 [2018-04-06 19:56:31,750 INFO L226 Difference]: Without dead ends: 77 [2018-04-06 19:56:31,751 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 [2018-04-06 19:56:31,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-06 19:56:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-04-06 19:56:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-06 19:56:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-04-06 19:56:31,761 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 27 [2018-04-06 19:56:31,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:31,762 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-04-06 19:56:31,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-06 19:56:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-04-06 19:56:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-06 19:56:31,763 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:31,764 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] [2018-04-06 19:56:31,764 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:31,764 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 [2018-04-06 19:56:31,780 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:31,799 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:31,911 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:31,996 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:31,996 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-04-06 19:56:31,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-06 19:56:31,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-06 19:56:31,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-04-06 19:56:31,998 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 10 states. [2018-04-06 19:56:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:32,089 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2018-04-06 19:56:32,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-06 19:56:32,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-04-06 19:56:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:32,097 INFO L225 Difference]: With dead ends: 103 [2018-04-06 19:56:32,097 INFO L226 Difference]: Without dead ends: 77 [2018-04-06 19:56:32,098 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 [2018-04-06 19:56:32,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-06 19:56:32,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-04-06 19:56:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-06 19:56:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2018-04-06 19:56:32,107 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 34 [2018-04-06 19:56:32,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:32,107 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2018-04-06 19:56:32,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-06 19:56:32,108 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2018-04-06 19:56:32,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-04-06 19:56:32,108 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:32,109 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] [2018-04-06 19:56:32,109 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:32,109 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 [2018-04-06 19:56:32,115 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:32,127 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:32,139 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-06 19:56:32,139 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-06 19:56:32,203 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:32,204 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-06 19:56:32,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-06 19:56:32,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-06 19:56:32,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-04-06 19:56:32,205 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 8 states. [2018-04-06 19:56:32,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:32,321 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2018-04-06 19:56:32,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-06 19:56:32,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-04-06 19:56:32,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:32,323 INFO L225 Difference]: With dead ends: 98 [2018-04-06 19:56:32,323 INFO L226 Difference]: Without dead ends: 96 [2018-04-06 19:56:32,323 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 [2018-04-06 19:56:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-04-06 19:56:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2018-04-06 19:56:32,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-04-06 19:56:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2018-04-06 19:56:32,334 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 41 [2018-04-06 19:56:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:32,335 INFO L459 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2018-04-06 19:56:32,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-06 19:56:32,336 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2018-04-06 19:56:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-04-06 19:56:32,339 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:32,339 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:56:32,339 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:32,339 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 [2018-04-06 19:56:32,350 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:32,363 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:32,445 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:32,555 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:32,555 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-06 19:56:32,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-06 19:56:32,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-06 19:56:32,556 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-04-06 19:56:32,556 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 16 states. [2018-04-06 19:56:32,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:32,956 INFO L93 Difference]: Finished difference Result 538 states and 610 transitions. [2018-04-06 19:56:32,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-06 19:56:32,956 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2018-04-06 19:56:32,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:32,960 INFO L225 Difference]: With dead ends: 538 [2018-04-06 19:56:32,960 INFO L226 Difference]: Without dead ends: 535 [2018-04-06 19:56:32,961 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2018-04-06 19:56:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-04-06 19:56:32,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 149. [2018-04-06 19:56:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-04-06 19:56:32,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2018-04-06 19:56:32,987 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 51 [2018-04-06 19:56:32,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:32,987 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2018-04-06 19:56:32,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-06 19:56:32,987 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2018-04-06 19:56:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-04-06 19:56:32,989 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:32,989 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] [2018-04-06 19:56:32,989 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:32,990 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 [2018-04-06 19:56:33,001 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:33,019 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-04-06 19:56:33,103 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-06 19:56:33,178 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:33,178 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-04-06 19:56:33,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-06 19:56:33,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-06 19:56:33,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-04-06 19:56:33,179 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand 15 states. [2018-04-06 19:56:33,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:33,294 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2018-04-06 19:56:33,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-06 19:56:33,294 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2018-04-06 19:56:33,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:33,295 INFO L225 Difference]: With dead ends: 185 [2018-04-06 19:56:33,296 INFO L226 Difference]: Without dead ends: 149 [2018-04-06 19:56:33,296 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 [2018-04-06 19:56:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-04-06 19:56:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-04-06 19:56:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-04-06 19:56:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2018-04-06 19:56:33,310 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 65 [2018-04-06 19:56:33,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:33,310 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2018-04-06 19:56:33,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-06 19:56:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2018-04-06 19:56:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-04-06 19:56:33,312 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:33,312 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] [2018-04-06 19:56:33,312 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:33,313 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 [2018-04-06 19:56:33,322 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:33,341 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-04-06 19:56:33,442 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-04-06 19:56:33,567 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:33,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2018-04-06 19:56:33,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-06 19:56:33,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-06 19:56:33,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-04-06 19:56:33,568 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 20 states. [2018-04-06 19:56:33,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:33,692 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2018-04-06 19:56:33,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-06 19:56:33,693 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 72 [2018-04-06 19:56:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:33,698 INFO L225 Difference]: With dead ends: 191 [2018-04-06 19:56:33,699 INFO L226 Difference]: Without dead ends: 149 [2018-04-06 19:56:33,700 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 [2018-04-06 19:56:33,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-04-06 19:56:33,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-04-06 19:56:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-04-06 19:56:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2018-04-06 19:56:33,714 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 72 [2018-04-06 19:56:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:33,715 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2018-04-06 19:56:33,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-06 19:56:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2018-04-06 19:56:33,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-04-06 19:56:33,717 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:33,717 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] [2018-04-06 19:56:33,717 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:33,717 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 [2018-04-06 19:56:33,726 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:33,748 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-04-06 19:56:33,826 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-04-06 19:56:33,946 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:33,946 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-06 19:56:33,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-06 19:56:33,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-06 19:56:33,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-06 19:56:33,947 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 16 states. [2018-04-06 19:56:34,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:34,197 INFO L93 Difference]: Finished difference Result 186 states and 210 transitions. [2018-04-06 19:56:34,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-06 19:56:34,197 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2018-04-06 19:56:34,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:34,199 INFO L225 Difference]: With dead ends: 186 [2018-04-06 19:56:34,199 INFO L226 Difference]: Without dead ends: 184 [2018-04-06 19:56:34,199 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-04-06 19:56:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-04-06 19:56:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2018-04-06 19:56:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-04-06 19:56:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2018-04-06 19:56:34,213 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 79 [2018-04-06 19:56:34,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:34,213 INFO L459 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2018-04-06 19:56:34,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-06 19:56:34,214 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2018-04-06 19:56:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-04-06 19:56:34,215 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:34,215 INFO L355 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:56:34,215 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:34,216 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 [2018-04-06 19:56:34,224 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:34,242 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:34,356 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:34,738 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:34,738 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-06 19:56:34,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-06 19:56:34,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-06 19:56:34,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2018-04-06 19:56:34,739 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand 32 states. [2018-04-06 19:56:36,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:36,155 INFO L93 Difference]: Finished difference Result 1962 states and 2222 transitions. [2018-04-06 19:56:36,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-06 19:56:36,156 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 107 [2018-04-06 19:56:36,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:36,168 INFO L225 Difference]: With dead ends: 1962 [2018-04-06 19:56:36,168 INFO L226 Difference]: Without dead ends: 1959 [2018-04-06 19:56:36,170 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2018-04-06 19:56:36,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2018-04-06 19:56:36,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 293. [2018-04-06 19:56:36,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-06 19:56:36,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 326 transitions. [2018-04-06 19:56:36,212 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 326 transitions. Word has length 107 [2018-04-06 19:56:36,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:36,212 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 326 transitions. [2018-04-06 19:56:36,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-06 19:56:36,212 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 326 transitions. [2018-04-06 19:56:36,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-04-06 19:56:36,213 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:36,213 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] [2018-04-06 19:56:36,213 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:36,213 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 [2018-04-06 19:56:36,220 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:36,242 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 210 proven. 54 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-04-06 19:56:36,349 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 162 proven. 54 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-04-06 19:56:36,474 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:36,474 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2018-04-06 19:56:36,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-06 19:56:36,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-06 19:56:36,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2018-04-06 19:56:36,475 INFO L87 Difference]: Start difference. First operand 293 states and 326 transitions. Second operand 25 states. [2018-04-06 19:56:36,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:36,718 INFO L93 Difference]: Finished difference Result 361 states and 400 transitions. [2018-04-06 19:56:36,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-06 19:56:36,718 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 127 [2018-04-06 19:56:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:36,719 INFO L225 Difference]: With dead ends: 361 [2018-04-06 19:56:36,720 INFO L226 Difference]: Without dead ends: 293 [2018-04-06 19:56:36,721 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 [2018-04-06 19:56:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-06 19:56:36,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-06 19:56:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-06 19:56:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 325 transitions. [2018-04-06 19:56:36,737 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 325 transitions. Word has length 127 [2018-04-06 19:56:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:36,737 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 325 transitions. [2018-04-06 19:56:36,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-06 19:56:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 325 transitions. [2018-04-06 19:56:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-04-06 19:56:36,739 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:36,739 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] [2018-04-06 19:56:36,739 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:36,739 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 [2018-04-06 19:56:36,745 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:36,769 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 219 proven. 85 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-04-06 19:56:36,920 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 179 proven. 85 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-04-06 19:56:37,080 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:37,080 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 30 [2018-04-06 19:56:37,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-06 19:56:37,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-06 19:56:37,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2018-04-06 19:56:37,081 INFO L87 Difference]: Start difference. First operand 293 states and 325 transitions. Second operand 30 states. [2018-04-06 19:56:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:37,652 INFO L93 Difference]: Finished difference Result 361 states and 399 transitions. [2018-04-06 19:56:37,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-06 19:56:37,652 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 134 [2018-04-06 19:56:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:37,653 INFO L225 Difference]: With dead ends: 361 [2018-04-06 19:56:37,654 INFO L226 Difference]: Without dead ends: 293 [2018-04-06 19:56:37,655 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 [2018-04-06 19:56:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-06 19:56:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-06 19:56:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-06 19:56:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 324 transitions. [2018-04-06 19:56:37,670 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 324 transitions. Word has length 134 [2018-04-06 19:56:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:37,670 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 324 transitions. [2018-04-06 19:56:37,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-06 19:56:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 324 transitions. [2018-04-06 19:56:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-04-06 19:56:37,671 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:37,671 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] [2018-04-06 19:56:37,671 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:37,671 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 [2018-04-06 19:56:37,679 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:37,702 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 212 proven. 123 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-04-06 19:56:37,996 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 188 proven. 123 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-04-06 19:56:38,310 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:38,310 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 35 [2018-04-06 19:56:38,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-06 19:56:38,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-06 19:56:38,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2018-04-06 19:56:38,311 INFO L87 Difference]: Start difference. First operand 293 states and 324 transitions. Second operand 35 states. [2018-04-06 19:56:38,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:38,818 INFO L93 Difference]: Finished difference Result 361 states and 398 transitions. [2018-04-06 19:56:38,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-04-06 19:56:38,818 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 141 [2018-04-06 19:56:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:38,820 INFO L225 Difference]: With dead ends: 361 [2018-04-06 19:56:38,820 INFO L226 Difference]: Without dead ends: 293 [2018-04-06 19:56:38,821 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2018-04-06 19:56:38,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-06 19:56:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-06 19:56:38,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-06 19:56:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 323 transitions. [2018-04-06 19:56:38,834 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 323 transitions. Word has length 141 [2018-04-06 19:56:38,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:38,834 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 323 transitions. [2018-04-06 19:56:38,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-06 19:56:38,834 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 323 transitions. [2018-04-06 19:56:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-04-06 19:56:38,835 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:38,836 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] [2018-04-06 19:56:38,836 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:38,836 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 [2018-04-06 19:56:38,847 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:38,870 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 189 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-04-06 19:56:39,069 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 189 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-04-06 19:56:39,327 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:39,327 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 40 [2018-04-06 19:56:39,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-06 19:56:39,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-06 19:56:39,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1278, Unknown=0, NotChecked=0, Total=1560 [2018-04-06 19:56:39,328 INFO L87 Difference]: Start difference. First operand 293 states and 323 transitions. Second operand 40 states. [2018-04-06 19:56:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:39,626 INFO L93 Difference]: Finished difference Result 367 states and 404 transitions. [2018-04-06 19:56:39,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-06 19:56:39,626 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 148 [2018-04-06 19:56:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:39,628 INFO L225 Difference]: With dead ends: 367 [2018-04-06 19:56:39,628 INFO L226 Difference]: Without dead ends: 293 [2018-04-06 19:56:39,629 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 249 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=653, Invalid=2209, Unknown=0, NotChecked=0, Total=2862 [2018-04-06 19:56:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-06 19:56:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-06 19:56:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-06 19:56:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 322 transitions. [2018-04-06 19:56:39,642 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 322 transitions. Word has length 148 [2018-04-06 19:56:39,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:39,643 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 322 transitions. [2018-04-06 19:56:39,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-06 19:56:39,643 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 322 transitions. [2018-04-06 19:56:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-04-06 19:56:39,644 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:39,645 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] [2018-04-06 19:56:39,645 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:39,645 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 [2018-04-06 19:56:39,652 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:39,684 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-04-06 19:56:39,826 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-04-06 19:56:40,529 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:40,529 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-06 19:56:40,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-06 19:56:40,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-06 19:56:40,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-04-06 19:56:40,530 INFO L87 Difference]: Start difference. First operand 293 states and 322 transitions. Second operand 32 states. [2018-04-06 19:56:41,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:41,613 INFO L93 Difference]: Finished difference Result 362 states and 414 transitions. [2018-04-06 19:56:41,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-06 19:56:41,613 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 155 [2018-04-06 19:56:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:41,615 INFO L225 Difference]: With dead ends: 362 [2018-04-06 19:56:41,615 INFO L226 Difference]: Without dead ends: 360 [2018-04-06 19:56:41,616 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2018-04-06 19:56:41,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-04-06 19:56:41,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 357. [2018-04-06 19:56:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-04-06 19:56:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 394 transitions. [2018-04-06 19:56:41,630 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 394 transitions. Word has length 155 [2018-04-06 19:56:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:41,631 INFO L459 AbstractCegarLoop]: Abstraction has 357 states and 394 transitions. [2018-04-06 19:56:41,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-06 19:56:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 394 transitions. [2018-04-06 19:56:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-04-06 19:56:41,633 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:41,633 INFO L355 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:56:41,633 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:41,633 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 [2018-04-06 19:56:41,646 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:41,673 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:42,236 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:56:43,222 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:43,222 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-06 19:56:43,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-06 19:56:43,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-06 19:56:43,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2018-04-06 19:56:43,223 INFO L87 Difference]: Start difference. First operand 357 states and 394 transitions. Second operand 64 states. [2018-04-06 19:56:48,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:48,981 INFO L93 Difference]: Finished difference Result 7498 states and 8470 transitions. [2018-04-06 19:56:48,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-04-06 19:56:48,981 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 219 [2018-04-06 19:56:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:49,003 INFO L225 Difference]: With dead ends: 7498 [2018-04-06 19:56:49,004 INFO L226 Difference]: Without dead ends: 7495 [2018-04-06 19:56:49,007 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2018-04-06 19:56:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7495 states. [2018-04-06 19:56:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7495 to 581. [2018-04-06 19:56:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-06 19:56:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 650 transitions. [2018-04-06 19:56:49,118 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 650 transitions. Word has length 219 [2018-04-06 19:56:49,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:49,118 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 650 transitions. [2018-04-06 19:56:49,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-06 19:56:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 650 transitions. [2018-04-06 19:56:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-04-06 19:56:49,120 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:49,120 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] [2018-04-06 19:56:49,120 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:49,120 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 [2018-04-06 19:56:49,129 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:49,167 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 934 proven. 220 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-04-06 19:56:49,637 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 710 proven. 220 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-04-06 19:56:49,970 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:49,970 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 45 [2018-04-06 19:56:49,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-04-06 19:56:49,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-04-06 19:56:49,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1631, Unknown=0, NotChecked=0, Total=1980 [2018-04-06 19:56:49,972 INFO L87 Difference]: Start difference. First operand 581 states and 650 transitions. Second operand 45 states. [2018-04-06 19:56:50,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:50,390 INFO L93 Difference]: Finished difference Result 713 states and 796 transitions. [2018-04-06 19:56:50,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-04-06 19:56:50,390 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 251 [2018-04-06 19:56:50,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:50,392 INFO L225 Difference]: With dead ends: 713 [2018-04-06 19:56:50,393 INFO L226 Difference]: Without dead ends: 581 [2018-04-06 19:56:50,394 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 449 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=821, Invalid=2839, Unknown=0, NotChecked=0, Total=3660 [2018-04-06 19:56:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-06 19:56:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-06 19:56:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-06 19:56:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 649 transitions. [2018-04-06 19:56:50,435 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 649 transitions. Word has length 251 [2018-04-06 19:56:50,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:50,435 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 649 transitions. [2018-04-06 19:56:50,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-04-06 19:56:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 649 transitions. [2018-04-06 19:56:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-04-06 19:56:50,437 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:50,437 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] [2018-04-06 19:56:50,437 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:50,437 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 [2018-04-06 19:56:50,443 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:50,482 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 975 proven. 279 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-04-06 19:56:50,942 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 759 proven. 279 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2018-04-06 19:56:51,348 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:51,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 50 [2018-04-06 19:56:51,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-04-06 19:56:51,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-04-06 19:56:51,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2018-04-06 19:56:51,350 INFO L87 Difference]: Start difference. First operand 581 states and 649 transitions. Second operand 50 states. [2018-04-06 19:56:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:51,841 INFO L93 Difference]: Finished difference Result 713 states and 795 transitions. [2018-04-06 19:56:51,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-04-06 19:56:51,880 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 258 [2018-04-06 19:56:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:51,882 INFO L225 Difference]: With dead ends: 713 [2018-04-06 19:56:51,882 INFO L226 Difference]: Without dead ends: 581 [2018-04-06 19:56:51,884 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 [2018-04-06 19:56:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-06 19:56:51,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-06 19:56:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-06 19:56:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 648 transitions. [2018-04-06 19:56:51,924 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 648 transitions. Word has length 258 [2018-04-06 19:56:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:51,924 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 648 transitions. [2018-04-06 19:56:51,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-04-06 19:56:51,924 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 648 transitions. [2018-04-06 19:56:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-04-06 19:56:51,926 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:51,926 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] [2018-04-06 19:56:51,926 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:51,926 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 [2018-04-06 19:56:51,935 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:51,991 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 1000 proven. 345 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-04-06 19:56:52,413 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 800 proven. 345 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-04-06 19:56:52,874 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:52,874 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 55 [2018-04-06 19:56:52,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-04-06 19:56:52,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-04-06 19:56:52,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2466, Unknown=0, NotChecked=0, Total=2970 [2018-04-06 19:56:52,875 INFO L87 Difference]: Start difference. First operand 581 states and 648 transitions. Second operand 55 states. [2018-04-06 19:56:53,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:53,519 INFO L93 Difference]: Finished difference Result 713 states and 794 transitions. [2018-04-06 19:56:53,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-04-06 19:56:53,520 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 265 [2018-04-06 19:56:53,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:53,522 INFO L225 Difference]: With dead ends: 713 [2018-04-06 19:56:53,522 INFO L226 Difference]: Without dead ends: 581 [2018-04-06 19:56:53,523 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 465 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1214, Invalid=4336, Unknown=0, NotChecked=0, Total=5550 [2018-04-06 19:56:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-06 19:56:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-06 19:56:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-06 19:56:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 647 transitions. [2018-04-06 19:56:53,570 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 647 transitions. Word has length 265 [2018-04-06 19:56:53,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:53,571 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 647 transitions. [2018-04-06 19:56:53,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-04-06 19:56:53,571 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 647 transitions. [2018-04-06 19:56:53,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-04-06 19:56:53,573 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:53,573 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] [2018-04-06 19:56:53,574 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:53,574 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 [2018-04-06 19:56:53,584 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:53,619 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 1009 proven. 418 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2018-04-06 19:56:53,989 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 833 proven. 418 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-04-06 19:56:54,489 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:54,490 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 60 [2018-04-06 19:56:54,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-06 19:56:54,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-06 19:56:54,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=2948, Unknown=0, NotChecked=0, Total=3540 [2018-04-06 19:56:54,491 INFO L87 Difference]: Start difference. First operand 581 states and 647 transitions. Second operand 60 states. [2018-04-06 19:56:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:55,233 INFO L93 Difference]: Finished difference Result 713 states and 793 transitions. [2018-04-06 19:56:55,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-06 19:56:55,234 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 272 [2018-04-06 19:56:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:55,236 INFO L225 Difference]: With dead ends: 713 [2018-04-06 19:56:55,236 INFO L226 Difference]: Without dead ends: 581 [2018-04-06 19:56:55,237 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 [2018-04-06 19:56:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-06 19:56:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-06 19:56:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-06 19:56:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 646 transitions. [2018-04-06 19:56:55,277 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 646 transitions. Word has length 272 [2018-04-06 19:56:55,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:55,277 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 646 transitions. [2018-04-06 19:56:55,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-06 19:56:55,277 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 646 transitions. [2018-04-06 19:56:55,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-04-06 19:56:55,279 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:55,279 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] [2018-04-06 19:56:55,279 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:55,279 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 [2018-04-06 19:56:55,286 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:55,327 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 1002 proven. 498 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-04-06 19:56:56,142 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 858 proven. 498 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2018-04-06 19:56:56,871 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:56,871 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 65 [2018-04-06 19:56:56,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-04-06 19:56:56,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-04-06 19:56:56,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=3473, Unknown=0, NotChecked=0, Total=4160 [2018-04-06 19:56:56,873 INFO L87 Difference]: Start difference. First operand 581 states and 646 transitions. Second operand 65 states. [2018-04-06 19:56:57,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:56:57,870 INFO L93 Difference]: Finished difference Result 713 states and 792 transitions. [2018-04-06 19:56:57,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-04-06 19:56:57,871 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 279 [2018-04-06 19:56:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:56:57,874 INFO L225 Difference]: With dead ends: 713 [2018-04-06 19:56:57,874 INFO L226 Difference]: Without dead ends: 581 [2018-04-06 19:56:57,875 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 481 SyntacticMatches, 13 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1683, Invalid=6149, Unknown=0, NotChecked=0, Total=7832 [2018-04-06 19:56:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-06 19:56:57,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-06 19:56:57,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-06 19:56:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 645 transitions. [2018-04-06 19:56:57,913 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 645 transitions. Word has length 279 [2018-04-06 19:56:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:56:57,913 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 645 transitions. [2018-04-06 19:56:57,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-04-06 19:56:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 645 transitions. [2018-04-06 19:56:57,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-04-06 19:56:57,914 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:56:57,914 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] [2018-04-06 19:56:57,915 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:56:57,915 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 [2018-04-06 19:56:57,921 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:56:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:56:57,961 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:56:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 979 proven. 585 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-04-06 19:56:58,538 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:56:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 875 proven. 585 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2018-04-06 19:56:59,198 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:56:59,199 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 70 [2018-04-06 19:56:59,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-04-06 19:56:59,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-04-06 19:56:59,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=4041, Unknown=0, NotChecked=0, Total=4830 [2018-04-06 19:56:59,200 INFO L87 Difference]: Start difference. First operand 581 states and 645 transitions. Second operand 70 states. [2018-04-06 19:57:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:57:00,005 INFO L93 Difference]: Finished difference Result 713 states and 791 transitions. [2018-04-06 19:57:00,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-04-06 19:57:00,005 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 286 [2018-04-06 19:57:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:57:00,007 INFO L225 Difference]: With dead ends: 713 [2018-04-06 19:57:00,007 INFO L226 Difference]: Without dead ends: 581 [2018-04-06 19:57:00,008 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 489 SyntacticMatches, 14 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1946, Invalid=7174, Unknown=0, NotChecked=0, Total=9120 [2018-04-06 19:57:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-06 19:57:00,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-06 19:57:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-06 19:57:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 644 transitions. [2018-04-06 19:57:00,061 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 644 transitions. Word has length 286 [2018-04-06 19:57:00,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:57:00,062 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 644 transitions. [2018-04-06 19:57:00,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-04-06 19:57:00,062 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 644 transitions. [2018-04-06 19:57:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-04-06 19:57:00,064 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:57:00,064 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] [2018-04-06 19:57:00,064 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:57:00,065 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 [2018-04-06 19:57:00,073 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:57:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:57:00,129 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:57:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 940 proven. 679 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-04-06 19:57:00,764 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:57:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 884 proven. 679 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-04-06 19:57:01,501 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:57:01,502 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 75 [2018-04-06 19:57:01,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-04-06 19:57:01,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-04-06 19:57:01,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=898, Invalid=4652, Unknown=0, NotChecked=0, Total=5550 [2018-04-06 19:57:01,503 INFO L87 Difference]: Start difference. First operand 581 states and 644 transitions. Second operand 75 states. [2018-04-06 19:57:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:57:02,310 INFO L93 Difference]: Finished difference Result 713 states and 790 transitions. [2018-04-06 19:57:02,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-04-06 19:57:02,310 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 293 [2018-04-06 19:57:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:57:02,312 INFO L225 Difference]: With dead ends: 713 [2018-04-06 19:57:02,312 INFO L226 Difference]: Without dead ends: 581 [2018-04-06 19:57:02,314 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 497 SyntacticMatches, 15 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2228, Invalid=8278, Unknown=0, NotChecked=0, Total=10506 [2018-04-06 19:57:02,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-06 19:57:02,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-06 19:57:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-06 19:57:02,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 643 transitions. [2018-04-06 19:57:02,351 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 643 transitions. Word has length 293 [2018-04-06 19:57:02,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:57:02,352 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 643 transitions. [2018-04-06 19:57:02,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-04-06 19:57:02,352 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 643 transitions. [2018-04-06 19:57:02,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-04-06 19:57:02,354 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:57:02,355 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] [2018-04-06 19:57:02,355 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:57:02,355 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 [2018-04-06 19:57:02,364 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:57:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:57:02,408 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:57:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 885 proven. 780 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-04-06 19:57:03,078 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:57:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 885 proven. 780 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-04-06 19:57:03,892 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:57:03,892 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 80 [2018-04-06 19:57:03,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-04-06 19:57:03,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-04-06 19:57:03,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1014, Invalid=5306, Unknown=0, NotChecked=0, Total=6320 [2018-04-06 19:57:03,894 INFO L87 Difference]: Start difference. First operand 581 states and 643 transitions. Second operand 80 states. [2018-04-06 19:57:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:57:04,887 INFO L93 Difference]: Finished difference Result 719 states and 796 transitions. [2018-04-06 19:57:04,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-04-06 19:57:04,887 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 300 [2018-04-06 19:57:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:57:04,889 INFO L225 Difference]: With dead ends: 719 [2018-04-06 19:57:04,889 INFO L226 Difference]: Without dead ends: 581 [2018-04-06 19:57:04,890 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 505 SyntacticMatches, 16 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3095 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2529, Invalid=9461, Unknown=0, NotChecked=0, Total=11990 [2018-04-06 19:57:04,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-06 19:57:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-06 19:57:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-06 19:57:04,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 642 transitions. [2018-04-06 19:57:04,927 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 642 transitions. Word has length 300 [2018-04-06 19:57:04,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:57:04,928 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 642 transitions. [2018-04-06 19:57:04,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-04-06 19:57:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 642 transitions. [2018-04-06 19:57:04,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-04-06 19:57:04,929 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:57:04,929 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] [2018-04-06 19:57:04,929 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:57:04,930 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 [2018-04-06 19:57:04,936 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:57:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:57:04,989 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:57:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2018-04-06 19:57:05,332 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:57:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2018-04-06 19:57:06,293 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:57:06,293 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-06 19:57:06,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-06 19:57:06,294 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-06 19:57:06,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-04-06 19:57:06,294 INFO L87 Difference]: Start difference. First operand 581 states and 642 transitions. Second operand 64 states. [2018-04-06 19:57:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:57:10,830 INFO L93 Difference]: Finished difference Result 714 states and 822 transitions. [2018-04-06 19:57:10,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-06 19:57:10,830 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 307 [2018-04-06 19:57:10,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:57:10,832 INFO L225 Difference]: With dead ends: 714 [2018-04-06 19:57:10,832 INFO L226 Difference]: Without dead ends: 712 [2018-04-06 19:57:10,833 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 [2018-04-06 19:57:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2018-04-06 19:57:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 709. [2018-04-06 19:57:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2018-04-06 19:57:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 786 transitions. [2018-04-06 19:57:10,873 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 786 transitions. Word has length 307 [2018-04-06 19:57:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:57:10,874 INFO L459 AbstractCegarLoop]: Abstraction has 709 states and 786 transitions. [2018-04-06 19:57:10,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-06 19:57:10,874 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 786 transitions. [2018-04-06 19:57:10,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-04-06 19:57:10,877 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:57:10,877 INFO L355 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:57:10,877 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:57:10,877 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 [2018-04-06 19:57:10,885 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:57:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:57:10,930 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:57:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:57:12,172 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:57:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:57:15,967 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:57:15,967 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-04-06 19:57:15,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-06 19:57:15,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-06 19:57:15,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4222, Invalid=12034, Unknown=0, NotChecked=0, Total=16256 [2018-04-06 19:57:15,969 INFO L87 Difference]: Start difference. First operand 709 states and 786 transitions. Second operand 128 states. [2018-04-06 19:57:21,524 WARN L151 SmtUtils]: Spent 265ms on a formula simplification. DAG size of input: 316 DAG size of output 6 [2018-04-06 19:57:22,009 WARN L151 SmtUtils]: Spent 260ms on a formula simplification. DAG size of input: 311 DAG size of output 6 [2018-04-06 19:57:22,490 WARN L151 SmtUtils]: Spent 244ms on a formula simplification. DAG size of input: 306 DAG size of output 6 [2018-04-06 19:57:22,963 WARN L151 SmtUtils]: Spent 232ms on a formula simplification. DAG size of input: 301 DAG size of output 6 [2018-04-06 19:57:23,433 WARN L151 SmtUtils]: Spent 230ms on a formula simplification. DAG size of input: 296 DAG size of output 6 [2018-04-06 19:57:23,894 WARN L151 SmtUtils]: Spent 228ms on a formula simplification. DAG size of input: 291 DAG size of output 6 [2018-04-06 19:57:24,348 WARN L151 SmtUtils]: Spent 220ms on a formula simplification. DAG size of input: 286 DAG size of output 6 [2018-04-06 19:57:24,821 WARN L151 SmtUtils]: Spent 217ms on a formula simplification. DAG size of input: 281 DAG size of output 6 [2018-04-06 19:57:25,267 WARN L151 SmtUtils]: Spent 201ms on a formula simplification. DAG size of input: 276 DAG size of output 6 [2018-04-06 19:57:25,714 WARN L151 SmtUtils]: Spent 205ms on a formula simplification. DAG size of input: 271 DAG size of output 6 [2018-04-06 19:57:26,136 WARN L151 SmtUtils]: Spent 184ms on a formula simplification. DAG size of input: 266 DAG size of output 6 [2018-04-06 19:57:26,574 WARN L151 SmtUtils]: Spent 183ms on a formula simplification. DAG size of input: 261 DAG size of output 6 [2018-04-06 19:57:26,990 WARN L151 SmtUtils]: Spent 179ms on a formula simplification. DAG size of input: 256 DAG size of output 6 [2018-04-06 19:57:27,401 WARN L151 SmtUtils]: Spent 164ms on a formula simplification. DAG size of input: 251 DAG size of output 6 [2018-04-06 19:57:27,801 WARN L151 SmtUtils]: Spent 161ms on a formula simplification. DAG size of input: 246 DAG size of output 6 [2018-04-06 19:57:28,208 WARN L151 SmtUtils]: Spent 159ms on a formula simplification. DAG size of input: 241 DAG size of output 6 [2018-04-06 19:57:28,608 WARN L151 SmtUtils]: Spent 161ms on a formula simplification. DAG size of input: 236 DAG size of output 6 [2018-04-06 19:57:28,995 WARN L151 SmtUtils]: Spent 151ms on a formula simplification. DAG size of input: 231 DAG size of output 6 [2018-04-06 19:57:29,368 WARN L151 SmtUtils]: Spent 140ms on a formula simplification. DAG size of input: 226 DAG size of output 6 [2018-04-06 19:57:29,738 WARN L151 SmtUtils]: Spent 138ms on a formula simplification. DAG size of input: 221 DAG size of output 6 [2018-04-06 19:57:30,109 WARN L151 SmtUtils]: Spent 139ms on a formula simplification. DAG size of input: 216 DAG size of output 6 [2018-04-06 19:57:30,465 WARN L151 SmtUtils]: Spent 124ms on a formula simplification. DAG size of input: 211 DAG size of output 6 [2018-04-06 19:57:30,814 WARN L151 SmtUtils]: Spent 121ms on a formula simplification. DAG size of input: 206 DAG size of output 6 [2018-04-06 19:57:31,160 WARN L151 SmtUtils]: Spent 117ms on a formula simplification. DAG size of input: 201 DAG size of output 6 [2018-04-06 19:57:31,495 WARN L151 SmtUtils]: Spent 108ms on a formula simplification. DAG size of input: 196 DAG size of output 6 [2018-04-06 19:57:31,838 WARN L151 SmtUtils]: Spent 103ms on a formula simplification. DAG size of input: 191 DAG size of output 6 [2018-04-06 19:57:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:57:45,182 INFO L93 Difference]: Finished difference Result 29322 states and 33062 transitions. [2018-04-06 19:57:45,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-04-06 19:57:45,183 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 443 [2018-04-06 19:57:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:57:45,271 INFO L225 Difference]: With dead ends: 29322 [2018-04-06 19:57:45,272 INFO L226 Difference]: Without dead ends: 29319 [2018-04-06 19:57:45,283 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=12158, Invalid=23752, Unknown=0, NotChecked=0, Total=35910 [2018-04-06 19:57:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29319 states. [2018-04-06 19:57:45,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29319 to 1157. [2018-04-06 19:57:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:57:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1298 transitions. [2018-04-06 19:57:45,779 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1298 transitions. Word has length 443 [2018-04-06 19:57:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:57:45,780 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1298 transitions. [2018-04-06 19:57:45,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-04-06 19:57:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1298 transitions. [2018-04-06 19:57:45,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-04-06 19:57:45,783 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:57:45,783 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] [2018-04-06 19:57:45,783 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:57:45,784 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 [2018-04-06 19:57:45,825 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:57:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:57:45,901 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:57:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3918 proven. 888 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2018-04-06 19:57:46,835 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:57:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2958 proven. 888 refuted. 0 times theorem prover too weak. 2715 trivial. 0 not checked. [2018-04-06 19:57:47,859 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:57:47,859 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 85 [2018-04-06 19:57:47,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-04-06 19:57:47,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-04-06 19:57:47,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=6003, Unknown=0, NotChecked=0, Total=7140 [2018-04-06 19:57:47,860 INFO L87 Difference]: Start difference. First operand 1157 states and 1298 transitions. Second operand 85 states. [2018-04-06 19:57:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:57:49,153 INFO L93 Difference]: Finished difference Result 1417 states and 1588 transitions. [2018-04-06 19:57:49,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-04-06 19:57:49,154 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 499 [2018-04-06 19:57:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:57:49,157 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:57:49,157 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:57:49,158 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 897 SyntacticMatches, 17 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3517 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2849, Invalid=10723, Unknown=0, NotChecked=0, Total=13572 [2018-04-06 19:57:49,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:57:49,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:57:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:57:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1297 transitions. [2018-04-06 19:57:49,304 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1297 transitions. Word has length 499 [2018-04-06 19:57:49,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:57:49,305 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1297 transitions. [2018-04-06 19:57:49,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-04-06 19:57:49,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1297 transitions. [2018-04-06 19:57:49,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-04-06 19:57:49,308 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:57:49,308 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] [2018-04-06 19:57:49,308 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:57:49,308 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 [2018-04-06 19:57:49,316 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:57:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:57:49,388 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:57:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6676 backedges. 4023 proven. 1003 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2018-04-06 19:57:50,396 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:57:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6676 backedges. 3071 proven. 1003 refuted. 0 times theorem prover too weak. 2602 trivial. 0 not checked. [2018-04-06 19:57:51,557 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:57:51,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 90 [2018-04-06 19:57:51,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-04-06 19:57:51,559 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-04-06 19:57:51,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1267, Invalid=6743, Unknown=0, NotChecked=0, Total=8010 [2018-04-06 19:57:51,560 INFO L87 Difference]: Start difference. First operand 1157 states and 1297 transitions. Second operand 90 states. [2018-04-06 19:57:53,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:57:53,050 INFO L93 Difference]: Finished difference Result 1417 states and 1587 transitions. [2018-04-06 19:57:53,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-04-06 19:57:53,050 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 506 [2018-04-06 19:57:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:57:53,053 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:57:53,053 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:57:53,055 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 905 SyntacticMatches, 18 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3966 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3188, Invalid=12064, Unknown=0, NotChecked=0, Total=15252 [2018-04-06 19:57:53,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:57:53,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:57:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:57:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1296 transitions. [2018-04-06 19:57:53,201 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1296 transitions. Word has length 506 [2018-04-06 19:57:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:57:53,202 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1296 transitions. [2018-04-06 19:57:53,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-04-06 19:57:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1296 transitions. [2018-04-06 19:57:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2018-04-06 19:57:53,206 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:57:53,206 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] [2018-04-06 19:57:53,206 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:57:53,207 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 [2018-04-06 19:57:53,215 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:57:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:57:53,291 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:57:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 4112 proven. 1125 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2018-04-06 19:57:54,360 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:57:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 3176 proven. 1125 refuted. 0 times theorem prover too weak. 2497 trivial. 0 not checked. [2018-04-06 19:57:55,708 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:57:55,708 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 95 [2018-04-06 19:57:55,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-04-06 19:57:55,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-04-06 19:57:55,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1404, Invalid=7526, Unknown=0, NotChecked=0, Total=8930 [2018-04-06 19:57:55,710 INFO L87 Difference]: Start difference. First operand 1157 states and 1296 transitions. Second operand 95 states. [2018-04-06 19:57:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:57:57,252 INFO L93 Difference]: Finished difference Result 1417 states and 1586 transitions. [2018-04-06 19:57:57,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-04-06 19:57:57,252 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 513 [2018-04-06 19:57:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:57:57,255 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:57:57,255 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:57:57,257 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 913 SyntacticMatches, 19 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4442 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3546, Invalid=13484, Unknown=0, NotChecked=0, Total=17030 [2018-04-06 19:57:57,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:57:57,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:57:57,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:57:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1295 transitions. [2018-04-06 19:57:57,505 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1295 transitions. Word has length 513 [2018-04-06 19:57:57,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:57:57,506 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1295 transitions. [2018-04-06 19:57:57,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-04-06 19:57:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1295 transitions. [2018-04-06 19:57:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-04-06 19:57:57,510 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:57:57,510 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] [2018-04-06 19:57:57,510 INFO L408 AbstractCegarLoop]: === Iteration 31 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:57:57,511 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 [2018-04-06 19:57:57,520 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:57:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:57:57,611 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:57:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6927 backedges. 4185 proven. 1254 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2018-04-06 19:57:58,976 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:58:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6927 backedges. 3273 proven. 1254 refuted. 0 times theorem prover too weak. 2400 trivial. 0 not checked. [2018-04-06 19:58:00,312 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:58:00,313 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 100 [2018-04-06 19:58:00,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-04-06 19:58:00,314 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-04-06 19:58:00,314 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1548, Invalid=8352, Unknown=0, NotChecked=0, Total=9900 [2018-04-06 19:58:00,314 INFO L87 Difference]: Start difference. First operand 1157 states and 1295 transitions. Second operand 100 states. [2018-04-06 19:58:01,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:58:01,971 INFO L93 Difference]: Finished difference Result 1417 states and 1585 transitions. [2018-04-06 19:58:01,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-04-06 19:58:01,971 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 520 [2018-04-06 19:58:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:58:01,973 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:58:01,974 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:58:01,977 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 921 SyntacticMatches, 20 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4945 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3923, Invalid=14983, Unknown=0, NotChecked=0, Total=18906 [2018-04-06 19:58:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:58:02,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:58:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:58:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1294 transitions. [2018-04-06 19:58:02,134 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1294 transitions. Word has length 520 [2018-04-06 19:58:02,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:58:02,135 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1294 transitions. [2018-04-06 19:58:02,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-04-06 19:58:02,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1294 transitions. [2018-04-06 19:58:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-04-06 19:58:02,137 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:58:02,137 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] [2018-04-06 19:58:02,138 INFO L408 AbstractCegarLoop]: === Iteration 32 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:58:02,138 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 [2018-04-06 19:58:02,143 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:58:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:58:02,201 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:58:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7063 backedges. 4242 proven. 1390 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2018-04-06 19:58:03,308 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:58:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7063 backedges. 3362 proven. 1390 refuted. 0 times theorem prover too weak. 2311 trivial. 0 not checked. [2018-04-06 19:58:04,784 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:58:04,785 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 105 [2018-04-06 19:58:04,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-04-06 19:58:04,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-04-06 19:58:04,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1699, Invalid=9221, Unknown=0, NotChecked=0, Total=10920 [2018-04-06 19:58:04,786 INFO L87 Difference]: Start difference. First operand 1157 states and 1294 transitions. Second operand 105 states. [2018-04-06 19:58:06,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:58:06,443 INFO L93 Difference]: Finished difference Result 1417 states and 1584 transitions. [2018-04-06 19:58:06,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-04-06 19:58:06,443 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 527 [2018-04-06 19:58:06,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:58:06,445 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:58:06,445 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:58:06,446 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 [2018-04-06 19:58:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:58:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:58:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:58:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1293 transitions. [2018-04-06 19:58:06,581 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1293 transitions. Word has length 527 [2018-04-06 19:58:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:58:06,581 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1293 transitions. [2018-04-06 19:58:06,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-04-06 19:58:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1293 transitions. [2018-04-06 19:58:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-04-06 19:58:06,584 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:58:06,584 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] [2018-04-06 19:58:06,584 INFO L408 AbstractCegarLoop]: === Iteration 33 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:58:06,584 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 [2018-04-06 19:58:06,590 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:58:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:58:06,651 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:58:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7206 backedges. 4283 proven. 1533 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-04-06 19:58:07,793 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:58:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7206 backedges. 3443 proven. 1533 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2018-04-06 19:58:09,352 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:58:09,352 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 110 [2018-04-06 19:58:09,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-04-06 19:58:09,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-04-06 19:58:09,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1857, Invalid=10133, Unknown=0, NotChecked=0, Total=11990 [2018-04-06 19:58:09,354 INFO L87 Difference]: Start difference. First operand 1157 states and 1293 transitions. Second operand 110 states. [2018-04-06 19:58:11,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:58:11,154 INFO L93 Difference]: Finished difference Result 1417 states and 1583 transitions. [2018-04-06 19:58:11,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-04-06 19:58:11,154 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 534 [2018-04-06 19:58:11,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:58:11,155 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:58:11,155 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:58:11,157 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 [2018-04-06 19:58:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:58:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:58:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:58:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1292 transitions. [2018-04-06 19:58:11,292 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1292 transitions. Word has length 534 [2018-04-06 19:58:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:58:11,292 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1292 transitions. [2018-04-06 19:58:11,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-04-06 19:58:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1292 transitions. [2018-04-06 19:58:11,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-04-06 19:58:11,295 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:58:11,295 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] [2018-04-06 19:58:11,295 INFO L408 AbstractCegarLoop]: === Iteration 34 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:58:11,295 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 [2018-04-06 19:58:11,301 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:58:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:58:11,359 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:58:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 4308 proven. 1683 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2018-04-06 19:58:12,561 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:58:14,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 3516 proven. 1683 refuted. 0 times theorem prover too weak. 2157 trivial. 0 not checked. [2018-04-06 19:58:14,225 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:58:14,225 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 115 [2018-04-06 19:58:14,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-04-06 19:58:14,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-04-06 19:58:14,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2022, Invalid=11088, Unknown=0, NotChecked=0, Total=13110 [2018-04-06 19:58:14,227 INFO L87 Difference]: Start difference. First operand 1157 states and 1292 transitions. Second operand 115 states. [2018-04-06 19:58:16,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:58:16,153 INFO L93 Difference]: Finished difference Result 1417 states and 1582 transitions. [2018-04-06 19:58:16,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-04-06 19:58:16,154 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 541 [2018-04-06 19:58:16,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:58:16,155 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:58:16,155 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:58:16,157 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 [2018-04-06 19:58:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:58:16,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:58:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:58:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1291 transitions. [2018-04-06 19:58:16,304 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1291 transitions. Word has length 541 [2018-04-06 19:58:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:58:16,305 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1291 transitions. [2018-04-06 19:58:16,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-04-06 19:58:16,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1291 transitions. [2018-04-06 19:58:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-04-06 19:58:16,307 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:58:16,307 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] [2018-04-06 19:58:16,308 INFO L408 AbstractCegarLoop]: === Iteration 35 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:58:16,308 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 [2018-04-06 19:58:16,313 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:58:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:58:16,374 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:58:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7513 backedges. 4317 proven. 1840 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2018-04-06 19:58:17,662 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:58:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7513 backedges. 3581 proven. 1840 refuted. 0 times theorem prover too weak. 2092 trivial. 0 not checked. [2018-04-06 19:58:19,457 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:58:19,458 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 120 [2018-04-06 19:58:19,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-04-06 19:58:19,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-04-06 19:58:19,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2194, Invalid=12086, Unknown=0, NotChecked=0, Total=14280 [2018-04-06 19:58:19,460 INFO L87 Difference]: Start difference. First operand 1157 states and 1291 transitions. Second operand 120 states. [2018-04-06 19:58:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:58:21,750 INFO L93 Difference]: Finished difference Result 1417 states and 1581 transitions. [2018-04-06 19:58:21,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-06 19:58:21,750 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 548 [2018-04-06 19:58:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:58:21,751 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:58:21,751 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:58:21,753 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 [2018-04-06 19:58:21,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:58:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:58:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:58:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1290 transitions. [2018-04-06 19:58:21,888 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1290 transitions. Word has length 548 [2018-04-06 19:58:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:58:21,888 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1290 transitions. [2018-04-06 19:58:21,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-04-06 19:58:21,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1290 transitions. [2018-04-06 19:58:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-04-06 19:58:21,890 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:58:21,891 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] [2018-04-06 19:58:21,891 INFO L408 AbstractCegarLoop]: === Iteration 36 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:58:21,891 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 [2018-04-06 19:58:21,897 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:58:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:58:21,956 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:58:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7677 backedges. 4310 proven. 2004 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2018-04-06 19:58:23,355 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:58:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7677 backedges. 3638 proven. 2004 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2018-04-06 19:58:25,285 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:58:25,285 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 125 [2018-04-06 19:58:25,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-04-06 19:58:25,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-04-06 19:58:25,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2373, Invalid=13127, Unknown=0, NotChecked=0, Total=15500 [2018-04-06 19:58:25,287 INFO L87 Difference]: Start difference. First operand 1157 states and 1290 transitions. Second operand 125 states. [2018-04-06 19:58:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:58:27,433 INFO L93 Difference]: Finished difference Result 1417 states and 1580 transitions. [2018-04-06 19:58:27,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-04-06 19:58:27,433 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 555 [2018-04-06 19:58:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:58:27,434 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:58:27,435 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:58:27,438 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 [2018-04-06 19:58:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:58:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:58:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:58:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1289 transitions. [2018-04-06 19:58:27,614 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1289 transitions. Word has length 555 [2018-04-06 19:58:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:58:27,614 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1289 transitions. [2018-04-06 19:58:27,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-04-06 19:58:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1289 transitions. [2018-04-06 19:58:27,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-04-06 19:58:27,617 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:58:27,617 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] [2018-04-06 19:58:27,617 INFO L408 AbstractCegarLoop]: === Iteration 37 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:58:27,617 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 [2018-04-06 19:58:27,623 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:58:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:58:27,685 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:58:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7848 backedges. 4287 proven. 2175 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2018-04-06 19:58:29,158 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:58:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7848 backedges. 3687 proven. 2175 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2018-04-06 19:58:31,364 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:58:31,365 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 130 [2018-04-06 19:58:31,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-04-06 19:58:31,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-04-06 19:58:31,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2559, Invalid=14211, Unknown=0, NotChecked=0, Total=16770 [2018-04-06 19:58:31,366 INFO L87 Difference]: Start difference. First operand 1157 states and 1289 transitions. Second operand 130 states. [2018-04-06 19:58:33,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:58:33,857 INFO L93 Difference]: Finished difference Result 1417 states and 1579 transitions. [2018-04-06 19:58:33,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-04-06 19:58:33,895 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 562 [2018-04-06 19:58:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:58:33,896 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:58:33,896 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:58:33,899 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 969 SyntacticMatches, 26 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8530 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6584, Invalid=25636, Unknown=0, NotChecked=0, Total=32220 [2018-04-06 19:58:33,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:58:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:58:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:58:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1288 transitions. [2018-04-06 19:58:34,058 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1288 transitions. Word has length 562 [2018-04-06 19:58:34,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:58:34,058 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1288 transitions. [2018-04-06 19:58:34,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-04-06 19:58:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1288 transitions. [2018-04-06 19:58:34,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-04-06 19:58:34,061 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:58:34,061 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] [2018-04-06 19:58:34,061 INFO L408 AbstractCegarLoop]: === Iteration 38 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:58:34,062 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 [2018-04-06 19:58:34,071 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:58:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:58:34,137 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:58:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8026 backedges. 4248 proven. 2353 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2018-04-06 19:58:35,711 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:58:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8026 backedges. 3728 proven. 2353 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2018-04-06 19:58:37,949 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:58:37,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 135 [2018-04-06 19:58:37,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-04-06 19:58:37,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-04-06 19:58:37,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2752, Invalid=15338, Unknown=0, NotChecked=0, Total=18090 [2018-04-06 19:58:37,951 INFO L87 Difference]: Start difference. First operand 1157 states and 1288 transitions. Second operand 135 states. [2018-04-06 19:58:40,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:58:40,677 INFO L93 Difference]: Finished difference Result 1417 states and 1578 transitions. [2018-04-06 19:58:40,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-04-06 19:58:40,678 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 569 [2018-04-06 19:58:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:58:40,679 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:58:40,679 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:58:40,680 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 977 SyntacticMatches, 27 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9222 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=7094, Invalid=27688, Unknown=0, NotChecked=0, Total=34782 [2018-04-06 19:58:40,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:58:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:58:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:58:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1287 transitions. [2018-04-06 19:58:40,815 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1287 transitions. Word has length 569 [2018-04-06 19:58:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:58:40,815 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1287 transitions. [2018-04-06 19:58:40,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-04-06 19:58:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1287 transitions. [2018-04-06 19:58:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-04-06 19:58:40,818 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:58:40,818 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:58:40,818 INFO L408 AbstractCegarLoop]: === Iteration 39 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:58:40,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1294495905, now seen corresponding path program 31 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 19:58:40,824 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:58:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:58:40,889 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:58:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 4193 proven. 2538 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-04-06 19:58:42,577 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:58:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 3761 proven. 2538 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. [2018-04-06 19:58:45,003 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:58:45,022 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 140 [2018-04-06 19:58:45,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-04-06 19:58:45,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-04-06 19:58:45,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2952, Invalid=16508, Unknown=0, NotChecked=0, Total=19460 [2018-04-06 19:58:45,024 INFO L87 Difference]: Start difference. First operand 1157 states and 1287 transitions. Second operand 140 states. [2018-04-06 19:58:47,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:58:47,592 INFO L93 Difference]: Finished difference Result 1417 states and 1577 transitions. [2018-04-06 19:58:47,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-04-06 19:58:47,592 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 576 [2018-04-06 19:58:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:58:47,594 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:58:47,594 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:58:47,595 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 985 SyntacticMatches, 28 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9941 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7623, Invalid=29819, Unknown=0, NotChecked=0, Total=37442 [2018-04-06 19:58:47,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:58:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:58:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:58:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1286 transitions. [2018-04-06 19:58:47,737 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1286 transitions. Word has length 576 [2018-04-06 19:58:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:58:47,737 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1286 transitions. [2018-04-06 19:58:47,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-04-06 19:58:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1286 transitions. [2018-04-06 19:58:47,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-04-06 19:58:47,740 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:58:47,740 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:58:47,740 INFO L408 AbstractCegarLoop]: === Iteration 40 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:58:47,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1001391579, now seen corresponding path program 32 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 19:58:47,746 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:58:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:58:47,812 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:58:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8403 backedges. 4122 proven. 2730 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2018-04-06 19:58:49,609 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:58:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8403 backedges. 3786 proven. 2730 refuted. 0 times theorem prover too weak. 1887 trivial. 0 not checked. [2018-04-06 19:58:52,162 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:58:52,163 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 145 [2018-04-06 19:58:52,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-04-06 19:58:52,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-04-06 19:58:52,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3159, Invalid=17721, Unknown=0, NotChecked=0, Total=20880 [2018-04-06 19:58:52,165 INFO L87 Difference]: Start difference. First operand 1157 states and 1286 transitions. Second operand 145 states. [2018-04-06 19:58:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:58:55,291 INFO L93 Difference]: Finished difference Result 1417 states and 1576 transitions. [2018-04-06 19:58:55,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-04-06 19:58:55,328 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 583 [2018-04-06 19:58:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:58:55,330 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:58:55,330 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:58:55,332 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 993 SyntacticMatches, 29 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10687 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=8171, Invalid=32029, Unknown=0, NotChecked=0, Total=40200 [2018-04-06 19:58:55,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:58:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:58:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:58:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1285 transitions. [2018-04-06 19:58:55,466 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1285 transitions. Word has length 583 [2018-04-06 19:58:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:58:55,467 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1285 transitions. [2018-04-06 19:58:55,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-04-06 19:58:55,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1285 transitions. [2018-04-06 19:58:55,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2018-04-06 19:58:55,469 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:58:55,470 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:58:55,470 INFO L408 AbstractCegarLoop]: === Iteration 41 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:58:55,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1416066081, now seen corresponding path program 33 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 19:58:55,476 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:58:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:58:55,540 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:58:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8602 backedges. 4035 proven. 2929 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2018-04-06 19:58:57,458 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:59:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 8602 backedges. 3803 proven. 2929 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2018-04-06 19:59:00,184 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:59:00,185 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 150 [2018-04-06 19:59:00,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-04-06 19:59:00,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-04-06 19:59:00,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3373, Invalid=18977, Unknown=0, NotChecked=0, Total=22350 [2018-04-06 19:59:00,187 INFO L87 Difference]: Start difference. First operand 1157 states and 1285 transitions. Second operand 150 states. [2018-04-06 19:59:02,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:59:02,976 INFO L93 Difference]: Finished difference Result 1417 states and 1575 transitions. [2018-04-06 19:59:02,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-04-06 19:59:02,977 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 590 [2018-04-06 19:59:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:59:02,978 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:59:02,978 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:59:02,980 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1001 SyntacticMatches, 30 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11460 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=8738, Invalid=34318, Unknown=0, NotChecked=0, Total=43056 [2018-04-06 19:59:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:59:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:59:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:59:03,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1284 transitions. [2018-04-06 19:59:03,114 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1284 transitions. Word has length 590 [2018-04-06 19:59:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:59:03,114 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1284 transitions. [2018-04-06 19:59:03,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-04-06 19:59:03,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1284 transitions. [2018-04-06 19:59:03,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-04-06 19:59:03,117 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:59:03,117 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:59:03,117 INFO L408 AbstractCegarLoop]: === Iteration 42 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:59:03,118 INFO L82 PathProgramCache]: Analyzing trace with hash -2085488293, now seen corresponding path program 34 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 19:59:03,123 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:59:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:59:03,188 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:59:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8808 backedges. 3932 proven. 3135 refuted. 0 times theorem prover too weak. 1741 trivial. 0 not checked. [2018-04-06 19:59:05,212 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:59:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8808 backedges. 3812 proven. 3135 refuted. 0 times theorem prover too weak. 1861 trivial. 0 not checked. [2018-04-06 19:59:08,103 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:59:08,103 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 155 [2018-04-06 19:59:08,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-04-06 19:59:08,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-04-06 19:59:08,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3594, Invalid=20276, Unknown=0, NotChecked=0, Total=23870 [2018-04-06 19:59:08,105 INFO L87 Difference]: Start difference. First operand 1157 states and 1284 transitions. Second operand 155 states. [2018-04-06 19:59:11,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:59:11,451 INFO L93 Difference]: Finished difference Result 1417 states and 1574 transitions. [2018-04-06 19:59:11,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-04-06 19:59:11,451 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 597 [2018-04-06 19:59:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:59:11,452 INFO L225 Difference]: With dead ends: 1417 [2018-04-06 19:59:11,452 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:59:11,454 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1253 GetRequests, 1009 SyntacticMatches, 31 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12260 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=9324, Invalid=36686, Unknown=0, NotChecked=0, Total=46010 [2018-04-06 19:59:11,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:59:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:59:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:59:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1283 transitions. [2018-04-06 19:59:11,589 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1283 transitions. Word has length 597 [2018-04-06 19:59:11,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:59:11,589 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1283 transitions. [2018-04-06 19:59:11,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-04-06 19:59:11,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1283 transitions. [2018-04-06 19:59:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2018-04-06 19:59:11,592 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:59:11,593 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:59:11,593 INFO L408 AbstractCegarLoop]: === Iteration 43 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:59:11,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1051043935, now seen corresponding path program 35 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 19:59:11,598 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:59:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:59:11,665 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:59:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9021 backedges. 3813 proven. 3348 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2018-04-06 19:59:13,812 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:59:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9021 backedges. 3813 proven. 3348 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2018-04-06 19:59:16,876 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:59:16,876 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 160 [2018-04-06 19:59:16,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-04-06 19:59:16,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-04-06 19:59:16,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3822, Invalid=21618, Unknown=0, NotChecked=0, Total=25440 [2018-04-06 19:59:16,878 INFO L87 Difference]: Start difference. First operand 1157 states and 1283 transitions. Second operand 160 states. [2018-04-06 19:59:20,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:59:20,297 INFO L93 Difference]: Finished difference Result 1423 states and 1580 transitions. [2018-04-06 19:59:20,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-04-06 19:59:20,297 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 604 [2018-04-06 19:59:20,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:59:20,298 INFO L225 Difference]: With dead ends: 1423 [2018-04-06 19:59:20,298 INFO L226 Difference]: Without dead ends: 1157 [2018-04-06 19:59:20,300 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1017 SyntacticMatches, 32 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13087 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=9929, Invalid=39133, Unknown=0, NotChecked=0, Total=49062 [2018-04-06 19:59:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-06 19:59:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-06 19:59:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-06 19:59:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1282 transitions. [2018-04-06 19:59:20,435 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1282 transitions. Word has length 604 [2018-04-06 19:59:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:59:20,435 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1282 transitions. [2018-04-06 19:59:20,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-04-06 19:59:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1282 transitions. [2018-04-06 19:59:20,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-04-06 19:59:20,438 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:59:20,438 INFO L355 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:59:20,438 INFO L408 AbstractCegarLoop]: === Iteration 44 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:59:20,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1770245339, now seen corresponding path program 36 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 19:59:20,443 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:59:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:59:20,510 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:59:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9241 backedges. 0 proven. 3813 refuted. 0 times theorem prover too weak. 5428 trivial. 0 not checked. [2018-04-06 19:59:21,801 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 19:59:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9241 backedges. 0 proven. 3813 refuted. 0 times theorem prover too weak. 5428 trivial. 0 not checked. [2018-04-06 19:59:25,458 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 19:59:25,458 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-04-06 19:59:25,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-06 19:59:25,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-06 19:59:25,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2238, Invalid=14018, Unknown=0, NotChecked=0, Total=16256 [2018-04-06 19:59:25,460 INFO L87 Difference]: Start difference. First operand 1157 states and 1282 transitions. Second operand 128 states. [2018-04-06 19:59:29,841 WARN L151 SmtUtils]: Spent 254ms on a formula simplification. DAG size of input: 252 DAG size of output 12 [2018-04-06 19:59:30,519 WARN L151 SmtUtils]: Spent 248ms on a formula simplification. DAG size of input: 247 DAG size of output 11 [2018-04-06 19:59:30,991 WARN L151 SmtUtils]: Spent 237ms on a formula simplification. DAG size of input: 244 DAG size of output 12 [2018-04-06 19:59:31,648 WARN L151 SmtUtils]: Spent 229ms on a formula simplification. DAG size of input: 239 DAG size of output 11 [2018-04-06 19:59:32,102 WARN L151 SmtUtils]: Spent 229ms on a formula simplification. DAG size of input: 236 DAG size of output 12 [2018-04-06 19:59:32,764 WARN L151 SmtUtils]: Spent 219ms on a formula simplification. DAG size of input: 231 DAG size of output 11 [2018-04-06 19:59:33,196 WARN L151 SmtUtils]: Spent 207ms on a formula simplification. DAG size of input: 228 DAG size of output 12 [2018-04-06 19:59:33,832 WARN L151 SmtUtils]: Spent 218ms on a formula simplification. DAG size of input: 223 DAG size of output 11 [2018-04-06 19:59:34,258 WARN L151 SmtUtils]: Spent 200ms on a formula simplification. DAG size of input: 220 DAG size of output 12 [2018-04-06 19:59:34,858 WARN L151 SmtUtils]: Spent 184ms on a formula simplification. DAG size of input: 215 DAG size of output 11 [2018-04-06 19:59:35,268 WARN L151 SmtUtils]: Spent 185ms on a formula simplification. DAG size of input: 212 DAG size of output 12 [2018-04-06 19:59:35,875 WARN L151 SmtUtils]: Spent 183ms on a formula simplification. DAG size of input: 207 DAG size of output 11 [2018-04-06 19:59:36,272 WARN L151 SmtUtils]: Spent 170ms on a formula simplification. DAG size of input: 204 DAG size of output 12 [2018-04-06 19:59:36,840 WARN L151 SmtUtils]: Spent 162ms on a formula simplification. DAG size of input: 199 DAG size of output 11 [2018-04-06 19:59:37,238 WARN L151 SmtUtils]: Spent 160ms on a formula simplification. DAG size of input: 196 DAG size of output 12 [2018-04-06 19:59:37,796 WARN L151 SmtUtils]: Spent 155ms on a formula simplification. DAG size of input: 191 DAG size of output 11 [2018-04-06 19:59:38,172 WARN L151 SmtUtils]: Spent 153ms on a formula simplification. DAG size of input: 188 DAG size of output 12 [2018-04-06 19:59:38,730 WARN L151 SmtUtils]: Spent 145ms on a formula simplification. DAG size of input: 183 DAG size of output 11 [2018-04-06 19:59:39,093 WARN L151 SmtUtils]: Spent 143ms on a formula simplification. DAG size of input: 180 DAG size of output 12 [2018-04-06 19:59:39,620 WARN L151 SmtUtils]: Spent 135ms on a formula simplification. DAG size of input: 175 DAG size of output 11 [2018-04-06 19:59:39,968 WARN L151 SmtUtils]: Spent 130ms on a formula simplification. DAG size of input: 172 DAG size of output 12 [2018-04-06 19:59:40,488 WARN L151 SmtUtils]: Spent 121ms on a formula simplification. DAG size of input: 167 DAG size of output 11 [2018-04-06 19:59:40,821 WARN L151 SmtUtils]: Spent 118ms on a formula simplification. DAG size of input: 164 DAG size of output 12 [2018-04-06 19:59:41,309 WARN L151 SmtUtils]: Spent 112ms on a formula simplification. DAG size of input: 159 DAG size of output 11 [2018-04-06 19:59:41,644 WARN L151 SmtUtils]: Spent 119ms on a formula simplification. DAG size of input: 156 DAG size of output 12 [2018-04-06 19:59:42,121 WARN L151 SmtUtils]: Spent 107ms on a formula simplification. DAG size of input: 151 DAG size of output 11 [2018-04-06 19:59:43,188 WARN L151 SmtUtils]: Spent 100ms on a formula simplification. DAG size of input: 140 DAG size of output 12 [2018-04-06 19:59:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 19:59:51,090 INFO L93 Difference]: Finished difference Result 1418 states and 1638 transitions. [2018-04-06 19:59:51,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-04-06 19:59:51,090 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 611 [2018-04-06 19:59:51,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 19:59:51,093 INFO L225 Difference]: With dead ends: 1418 [2018-04-06 19:59:51,093 INFO L226 Difference]: Without dead ends: 1416 [2018-04-06 19:59:51,098 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1375 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15068 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=18976, Invalid=60266, Unknown=0, NotChecked=0, Total=79242 [2018-04-06 19:59:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2018-04-06 19:59:51,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1413. [2018-04-06 19:59:51,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2018-04-06 19:59:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1570 transitions. [2018-04-06 19:59:51,252 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1570 transitions. Word has length 611 [2018-04-06 19:59:51,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 19:59:51,253 INFO L459 AbstractCegarLoop]: Abstraction has 1413 states and 1570 transitions. [2018-04-06 19:59:51,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-04-06 19:59:51,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1570 transitions. [2018-04-06 19:59:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2018-04-06 19:59:51,258 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 19:59:51,258 INFO L355 BasicCegarLoop]: trace histogram [127, 126, 126, 126, 126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 19:59:51,259 INFO L408 AbstractCegarLoop]: === Iteration 45 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-06 19:59:51,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1279826094, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 19:59:51,267 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 19:59:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 19:59:51,349 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 19:59:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 55377 backedges. 0 proven. 55377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 19:59:56,179 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 20:00:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 55377 backedges. 0 proven. 55377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 20:00:11,356 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 20:00:11,356 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 255 [2018-04-06 20:00:11,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-04-06 20:00:11,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-04-06 20:00:11,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16638, Invalid=48642, Unknown=0, NotChecked=0, Total=65280 [2018-04-06 20:00:11,361 INFO L87 Difference]: Start difference. First operand 1413 states and 1570 transitions. Second operand 256 states. Received shutdown request... [2018-04-06 20:00:16,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-04-06 20:00:16,889 WARN L519 AbstractCegarLoop]: Verification canceled [2018-04-06 20:00:16,894 WARN L197 ceAbstractionStarter]: Timeout [2018-04-06 20:00:16,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:00:16 BoogieIcfgContainer [2018-04-06 20:00:16,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-06 20:00:16,895 INFO L168 Benchmark]: Toolchain (without parser) took 226727.06 ms. Allocated memory was 303.6 MB in the beginning and 975.2 MB in the end (delta: 671.6 MB). Free memory was 246.1 MB in the beginning and 264.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 653.2 MB. Max. memory is 5.3 GB. [2018-04-06 20:00:16,897 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 303.6 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-06 20:00:16,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.59 ms. Allocated memory is still 303.6 MB. Free memory was 246.1 MB in the beginning and 237.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. [2018-04-06 20:00:16,897 INFO L168 Benchmark]: Boogie Preprocessor took 22.35 ms. Allocated memory is still 303.6 MB. Free memory was 237.1 MB in the beginning and 235.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-04-06 20:00:16,898 INFO L168 Benchmark]: RCFGBuilder took 237.93 ms. Allocated memory was 303.6 MB in the beginning and 465.0 MB in the end (delta: 161.5 MB). Free memory was 235.1 MB in the beginning and 434.9 MB in the end (delta: -199.8 MB). Peak memory consumption was 21.9 MB. Max. memory is 5.3 GB. [2018-04-06 20:00:16,898 INFO L168 Benchmark]: TraceAbstraction took 226290.58 ms. Allocated memory was 465.0 MB in the beginning and 975.2 MB in the end (delta: 510.1 MB). Free memory was 434.9 MB in the beginning and 264.5 MB in the end (delta: 170.4 MB). Peak memory consumption was 680.5 MB. Max. memory is 5.3 GB. [2018-04-06 20:00:16,901 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 303.6 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 171.59 ms. Allocated memory is still 303.6 MB. Free memory was 246.1 MB in the beginning and 237.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.35 ms. Allocated memory is still 303.6 MB. Free memory was 237.1 MB in the beginning and 235.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 237.93 ms. Allocated memory was 303.6 MB in the beginning and 465.0 MB in the end (delta: 161.5 MB). Free memory was 235.1 MB in the beginning and 434.9 MB in the end (delta: -199.8 MB). Peak memory consumption was 21.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 226290.58 ms. Allocated memory was 465.0 MB in the beginning and 975.2 MB in the end (delta: 510.1 MB). Free memory was 434.9 MB in the beginning and 264.5 MB in the end (delta: 170.4 MB). Peak memory consumption was 680.5 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 constructing difference of abstraction (1413states) and interpolant automaton (currently 46 states, 256 states before enhancement), while ReachableStatesComputation was computing reachable states (400 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was constructing difference of abstraction (1413states) and interpolant automaton (currently 46 states, 256 states before enhancement), while ReachableStatesComputation was computing reachable states (400 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 8). Cancelled while BasicCegarLoop was constructing difference of abstraction (1413states) and interpolant automaton (currently 46 states, 256 states before enhancement), while ReachableStatesComputation was computing reachable states (400 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 8). Cancelled while BasicCegarLoop was constructing difference of abstraction (1413states) and interpolant automaton (currently 46 states, 256 states before enhancement), while ReachableStatesComputation was computing reachable states (400 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 7]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 7). Cancelled while BasicCegarLoop was constructing difference of abstraction (1413states) and interpolant automaton (currently 46 states, 256 states before enhancement), while ReachableStatesComputation was computing reachable states (400 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 5 error locations. TIMEOUT Result, 226.2s OverallTime, 45 OverallIterations, 127 TraceHistogramMax, 118.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6329 SDtfs, 47259 SDslu, 159175 SDs, 0 SdLazy, 101394 SolverSat, 8238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30795 GetRequests, 25571 SyntacticMatches, 528 SemanticMatches, 4696 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164302 ImplicationChecksByTransitivity, 159.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1413occurred in iteration=44, 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: 3.7s AutomataMinimizationTime, 44 MinimizatonAttempts, 37270 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 100.0s InterpolantComputationTime, 14727 NumberOfCodeBlocks, 14727 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 29364 ConstructedInterpolants, 0 QuantifiedInterpolants, 52740228 SizeOfPredicates, 1170 NumberOfNonLiveVariables, 20170 ConjunctsInSsa, 2331 ConjunctsInUnsatCore, 90 InterpolantComputations, 6 PerfectInterpolantSequences, 219030/446564 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-0-2018-04-06_20-00-16-910.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-0-2018-04-06_20-00-16-910.csv Completed graceful shutdown