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/AutomizerCTransformed.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 0.1.23-453dfda-m [2018-04-10 00:45:48,435 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-10 00:45:48,437 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-10 00:45:48,450 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-10 00:45:48,450 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-10 00:45:48,451 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-10 00:45:48,452 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-10 00:45:48,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-10 00:45:48,456 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-10 00:45:48,457 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-10 00:45:48,457 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-10 00:45:48,458 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-10 00:45:48,459 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-10 00:45:48,460 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-10 00:45:48,461 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-10 00:45:48,463 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-10 00:45:48,465 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-10 00:45:48,467 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-10 00:45:48,468 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-10 00:45:48,470 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-10 00:45:48,472 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-04-10 00:45:48,478 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-10 00:45:48,478 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-10 00:45:48,479 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 [2018-04-10 00:45:48,502 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-10 00:45:48,502 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-10 00:45:48,502 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-10 00:45:48,502 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-10 00:45:48,503 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-10 00:45:48,503 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-10 00:45:48,503 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-10 00:45:48,503 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-10 00:45:48,504 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-10 00:45:48,504 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-10 00:45:48,504 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-10 00:45:48,504 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-10 00:45:48,504 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-10 00:45:48,504 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-10 00:45:48,505 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-10 00:45:48,505 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-10 00:45:48,505 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-10 00:45:48,505 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-10 00:45:48,505 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-10 00:45:48,505 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-10 00:45:48,505 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-10 00:45:48,506 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-10 00:45:48,506 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-10 00:45:48,506 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-10 00:45:48,506 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-10 00:45:48,507 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-10 00:45:48,507 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-10 00:45:48,507 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-10 00:45:48,507 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-10 00:45:48,507 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-10 00:45:48,507 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-10 00:45:48,507 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-10 00:45:48,508 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-10 00:45:48,508 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-10 00:45:48,508 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-10 00:45:48,509 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-10 00:45:48,509 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-10 00:45:48,509 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-10 00:45:48,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-10 00:45:48,554 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-10 00:45:48,558 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-10 00:45:48,559 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-10 00:45:48,559 INFO L276 PluginConnector]: CDTParser initialized [2018-04-10 00:45:48,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_false-valid-deref_ground.i [2018-04-10 00:45:48,845 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG09a6a0d2d [2018-04-10 00:45:48,986 INFO L287 CDTParser]: IsIndexed: true [2018-04-10 00:45:48,986 INFO L288 CDTParser]: Found 1 translation units. [2018-04-10 00:45:48,987 INFO L168 CDTParser]: Scanning standard_strcpy_false-valid-deref_ground.i [2018-04-10 00:45:48,988 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-10 00:45:48,988 INFO L215 ultiparseSymbolTable]: [2018-04-10 00:45:48,988 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-10 00:45:48,988 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert ('__VERIFIER_assert') in standard_strcpy_false-valid-deref_ground.i [2018-04-10 00:45:48,988 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in standard_strcpy_false-valid-deref_ground.i [2018-04-10 00:45:48,988 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-10 00:45:48,988 INFO L233 ultiparseSymbolTable]: [2018-04-10 00:45:49,003 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG09a6a0d2d [2018-04-10 00:45:49,008 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-10 00:45:49,011 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-04-10 00:45:49,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-10 00:45:49,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-10 00:45:49,018 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-10 00:45:49,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 12:45:49" (1/1) ... [2018-04-10 00:45:49,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7a4567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49, skipping insertion in model container [2018-04-10 00:45:49,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 12:45:49" (1/1) ... [2018-04-10 00:45:49,035 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 00:45:49,046 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 00:45:49,185 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 00:45:49,199 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 00:45:49,203 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 5 non ball SCCs. Number of states in SCCs 5. [2018-04-10 00:45:49,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49 WrapperNode [2018-04-10 00:45:49,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-10 00:45:49,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-10 00:45:49,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-10 00:45:49,209 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-10 00:45:49,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49" (1/1) ... [2018-04-10 00:45:49,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49" (1/1) ... [2018-04-10 00:45:49,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49" (1/1) ... [2018-04-10 00:45:49,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49" (1/1) ... [2018-04-10 00:45:49,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49" (1/1) ... [2018-04-10 00:45:49,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49" (1/1) ... [2018-04-10 00:45:49,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49" (1/1) ... [2018-04-10 00:45:49,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-10 00:45:49,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-10 00:45:49,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-10 00:45:49,232 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-10 00:45:49,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49" (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 [2018-04-10 00:45:49,299 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-10 00:45:49,299 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-10 00:45:49,299 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert [2018-04-10 00:45:49,300 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-10 00:45:49,300 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-04-10 00:45:49,300 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert [2018-04-10 00:45:49,300 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-10 00:45:49,300 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-10 00:45:49,300 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-10 00:45:49,505 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-10 00:45:49,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 12:45:49 BoogieIcfgContainer [2018-04-10 00:45:49,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-10 00:45:49,506 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-04-10 00:45:49,506 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-04-10 00:45:49,506 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-04-10 00:45:49,509 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 12:45:49" (1/1) ... [2018-04-10 00:45:49,513 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-04-10 00:45:49,522 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 5 non ball SCCs. Number of states in SCCs 5. [2018-04-10 00:45:49,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.04 12:45:49 BasicIcfg [2018-04-10 00:45:49,523 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-04-10 00:45:49,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-10 00:45:49,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-10 00:45:49,526 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-10 00:45:49,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.04 12:45:49" (1/4) ... [2018-04-10 00:45:49,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f47ca20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 12:45:49, skipping insertion in model container [2018-04-10 00:45:49,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 12:45:49" (2/4) ... [2018-04-10 00:45:49,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f47ca20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 12:45:49, skipping insertion in model container [2018-04-10 00:45:49,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 12:45:49" (3/4) ... [2018-04-10 00:45:49,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f47ca20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.04 12:45:49, skipping insertion in model container [2018-04-10 00:45:49,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.04 12:45:49" (4/4) ... [2018-04-10 00:45:49,529 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_strcpy_false-valid-deref_ground.ileft_unchanged_by_heapseparator [2018-04-10 00:45:49,537 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-10 00:45:49,544 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-04-10 00:45:49,586 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-10 00:45:49,587 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-10 00:45:49,587 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-10 00:45:49,587 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-10 00:45:49,587 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-10 00:45:49,587 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-10 00:45:49,587 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-10 00:45:49,587 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-10 00:45:49,587 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-10 00:45:49,588 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-10 00:45:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-04-10 00:45:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-04-10 00:45:49,603 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:49,604 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 00:45:49,604 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:49,608 INFO L82 PathProgramCache]: Analyzing trace with hash 167026923, 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 [2018-04-10 00:45:49,620 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:49,641 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:49,672 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:49,746 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-10 00:45:49,746 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-10 00:45:49,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-10 00:45:49,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-10 00:45:49,759 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-10 00:45:49,760 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2018-04-10 00:45:49,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:49,866 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2018-04-10 00:45:49,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-10 00:45:49,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-04-10 00:45:49,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:49,877 INFO L225 Difference]: With dead ends: 108 [2018-04-10 00:45:49,877 INFO L226 Difference]: Without dead ends: 71 [2018-04-10 00:45:49,880 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 [2018-04-10 00:45:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-04-10 00:45:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 45. [2018-04-10 00:45:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-04-10 00:45:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-04-10 00:45:49,924 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 9 [2018-04-10 00:45:49,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:49,925 INFO L459 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-04-10 00:45:49,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-10 00:45:49,925 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-04-10 00:45:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-04-10 00:45:49,926 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:49,926 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 00:45:49,926 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:49,927 INFO L82 PathProgramCache]: Analyzing trace with hash -2125002319, 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 [2018-04-10 00:45:49,938 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:49,946 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:49,964 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:50,032 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-10 00:45:50,032 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-10 00:45:50,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-10 00:45:50,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-10 00:45:50,034 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-10 00:45:50,034 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2018-04-10 00:45:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:50,053 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-04-10 00:45:50,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-10 00:45:50,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-04-10 00:45:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:50,055 INFO L225 Difference]: With dead ends: 54 [2018-04-10 00:45:50,056 INFO L226 Difference]: Without dead ends: 52 [2018-04-10 00:45:50,057 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 [2018-04-10 00:45:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-04-10 00:45:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-04-10 00:45:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-04-10 00:45:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-04-10 00:45:50,065 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 15 [2018-04-10 00:45:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:50,065 INFO L459 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-04-10 00:45:50,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-10 00:45:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-04-10 00:45:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-10 00:45:50,066 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:50,067 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 00:45:50,067 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:50,067 INFO L82 PathProgramCache]: Analyzing trace with hash 406766827, 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 [2018-04-10 00:45:50,074 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:50,084 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:50,130 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:50,219 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:50,219 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-10 00:45:50,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-10 00:45:50,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-10 00:45:50,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-04-10 00:45:50,220 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2018-04-10 00:45:50,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:50,435 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2018-04-10 00:45:50,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-10 00:45:50,435 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-04-10 00:45:50,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:50,438 INFO L225 Difference]: With dead ends: 178 [2018-04-10 00:45:50,438 INFO L226 Difference]: Without dead ends: 175 [2018-04-10 00:45:50,439 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 [2018-04-10 00:45:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-04-10 00:45:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 77. [2018-04-10 00:45:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-10 00:45:50,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2018-04-10 00:45:50,454 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 23 [2018-04-10 00:45:50,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:50,454 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2018-04-10 00:45:50,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-10 00:45:50,455 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2018-04-10 00:45:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-04-10 00:45:50,456 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:50,456 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] [2018-04-10 00:45:50,456 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:50,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1469768630, 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 [2018-04-10 00:45:50,464 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:50,476 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-04-10 00:45:50,516 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-04-10 00:45:50,572 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-10 00:45:50,573 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-04-10 00:45:50,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-10 00:45:50,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-10 00:45:50,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-10 00:45:50,574 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 5 states. [2018-04-10 00:45:50,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:50,631 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2018-04-10 00:45:50,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-10 00:45:50,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-04-10 00:45:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:50,633 INFO L225 Difference]: With dead ends: 97 [2018-04-10 00:45:50,633 INFO L226 Difference]: Without dead ends: 77 [2018-04-10 00:45:50,634 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 [2018-04-10 00:45:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-10 00:45:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-04-10 00:45:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-10 00:45:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-04-10 00:45:50,641 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 27 [2018-04-10 00:45:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:50,642 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-04-10 00:45:50,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-10 00:45:50,642 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-04-10 00:45:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-10 00:45:50,643 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:50,643 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] [2018-04-10 00:45:50,643 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:50,643 INFO L82 PathProgramCache]: Analyzing trace with hash 333723178, 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 [2018-04-10 00:45:50,651 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:50,662 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:50,734 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:50,833 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:50,833 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-04-10 00:45:50,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-10 00:45:50,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-10 00:45:50,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-04-10 00:45:50,835 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 10 states. [2018-04-10 00:45:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:50,955 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2018-04-10 00:45:50,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-10 00:45:50,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-04-10 00:45:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:50,957 INFO L225 Difference]: With dead ends: 103 [2018-04-10 00:45:50,958 INFO L226 Difference]: Without dead ends: 77 [2018-04-10 00:45:50,958 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-04-10 00:45:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-10 00:45:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-04-10 00:45:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-10 00:45:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2018-04-10 00:45:50,968 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 34 [2018-04-10 00:45:50,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:50,969 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2018-04-10 00:45:50,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-10 00:45:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2018-04-10 00:45:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-04-10 00:45:50,978 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:50,979 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] [2018-04-10 00:45:50,979 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:50,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1844330570, 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 [2018-04-10 00:45:50,994 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:51,007 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-10 00:45:51,043 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-10 00:45:51,132 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:51,133 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-10 00:45:51,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-10 00:45:51,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-10 00:45:51,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-04-10 00:45:51,134 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 8 states. [2018-04-10 00:45:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:51,245 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2018-04-10 00:45:51,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-10 00:45:51,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-04-10 00:45:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:51,247 INFO L225 Difference]: With dead ends: 98 [2018-04-10 00:45:51,247 INFO L226 Difference]: Without dead ends: 96 [2018-04-10 00:45:51,247 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-04-10 00:45:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-04-10 00:45:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2018-04-10 00:45:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-04-10 00:45:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2018-04-10 00:45:51,257 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 41 [2018-04-10 00:45:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:51,258 INFO L459 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2018-04-10 00:45:51,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-10 00:45:51,258 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2018-04-10 00:45:51,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-04-10 00:45:51,260 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:51,261 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 00:45:51,261 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:51,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1889137429, 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 [2018-04-10 00:45:51,267 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:51,279 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:51,346 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:51,481 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:51,481 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-10 00:45:51,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-10 00:45:51,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-10 00:45:51,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-04-10 00:45:51,482 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 16 states. [2018-04-10 00:45:51,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:51,883 INFO L93 Difference]: Finished difference Result 538 states and 610 transitions. [2018-04-10 00:45:51,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-10 00:45:51,889 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2018-04-10 00:45:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:51,893 INFO L225 Difference]: With dead ends: 538 [2018-04-10 00:45:51,893 INFO L226 Difference]: Without dead ends: 535 [2018-04-10 00:45:51,894 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 [2018-04-10 00:45:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-04-10 00:45:51,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 149. [2018-04-10 00:45:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-04-10 00:45:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2018-04-10 00:45:51,922 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 51 [2018-04-10 00:45:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:51,922 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2018-04-10 00:45:51,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-10 00:45:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2018-04-10 00:45:51,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-04-10 00:45:51,925 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:51,925 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] [2018-04-10 00:45:51,925 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:51,925 INFO L82 PathProgramCache]: Analyzing trace with hash -169194244, 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 [2018-04-10 00:45:51,938 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:51,957 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-04-10 00:45:52,053 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-10 00:45:52,124 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:52,125 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-04-10 00:45:52,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-10 00:45:52,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-10 00:45:52,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-04-10 00:45:52,126 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand 15 states. [2018-04-10 00:45:52,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:52,212 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2018-04-10 00:45:52,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-10 00:45:52,212 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2018-04-10 00:45:52,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:52,213 INFO L225 Difference]: With dead ends: 185 [2018-04-10 00:45:52,213 INFO L226 Difference]: Without dead ends: 149 [2018-04-10 00:45:52,214 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 [2018-04-10 00:45:52,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-04-10 00:45:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-04-10 00:45:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-04-10 00:45:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2018-04-10 00:45:52,228 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 65 [2018-04-10 00:45:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:52,228 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2018-04-10 00:45:52,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-10 00:45:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2018-04-10 00:45:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-04-10 00:45:52,230 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:52,230 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] [2018-04-10 00:45:52,231 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:52,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1020854564, 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 [2018-04-10 00:45:52,247 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:52,263 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-04-10 00:45:52,379 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-04-10 00:45:52,495 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:52,496 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2018-04-10 00:45:52,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-10 00:45:52,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-10 00:45:52,496 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-04-10 00:45:52,497 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 20 states. [2018-04-10 00:45:52,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:52,616 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2018-04-10 00:45:52,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-10 00:45:52,617 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 72 [2018-04-10 00:45:52,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:52,618 INFO L225 Difference]: With dead ends: 191 [2018-04-10 00:45:52,618 INFO L226 Difference]: Without dead ends: 149 [2018-04-10 00:45:52,619 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 [2018-04-10 00:45:52,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-04-10 00:45:52,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-04-10 00:45:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-04-10 00:45:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2018-04-10 00:45:52,628 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 72 [2018-04-10 00:45:52,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:52,628 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2018-04-10 00:45:52,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-10 00:45:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2018-04-10 00:45:52,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-04-10 00:45:52,630 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:52,630 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] [2018-04-10 00:45:52,630 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:52,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1870164220, 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 [2018-04-10 00:45:52,638 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:52,657 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-04-10 00:45:52,719 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-04-10 00:45:52,852 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:52,853 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-10 00:45:52,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-10 00:45:52,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-10 00:45:52,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-10 00:45:52,853 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 16 states. [2018-04-10 00:45:53,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:53,096 INFO L93 Difference]: Finished difference Result 186 states and 210 transitions. [2018-04-10 00:45:53,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-10 00:45:53,096 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2018-04-10 00:45:53,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:53,098 INFO L225 Difference]: With dead ends: 186 [2018-04-10 00:45:53,098 INFO L226 Difference]: Without dead ends: 184 [2018-04-10 00:45:53,098 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 [2018-04-10 00:45:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-04-10 00:45:53,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2018-04-10 00:45:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-04-10 00:45:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2018-04-10 00:45:53,111 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 79 [2018-04-10 00:45:53,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:53,111 INFO L459 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2018-04-10 00:45:53,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-10 00:45:53,111 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2018-04-10 00:45:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-04-10 00:45:53,113 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:53,113 INFO L355 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 00:45:53,113 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:53,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1191222507, 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 [2018-04-10 00:45:53,124 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:53,140 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:53,258 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:45:53,754 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:53,755 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-10 00:45:53,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-10 00:45:53,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-10 00:45:53,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2018-04-10 00:45:53,756 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand 32 states. [2018-04-10 00:45:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:55,133 INFO L93 Difference]: Finished difference Result 1962 states and 2222 transitions. [2018-04-10 00:45:55,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-10 00:45:55,133 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 107 [2018-04-10 00:45:55,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:55,145 INFO L225 Difference]: With dead ends: 1962 [2018-04-10 00:45:55,145 INFO L226 Difference]: Without dead ends: 1959 [2018-04-10 00:45:55,147 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2018-04-10 00:45:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2018-04-10 00:45:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 293. [2018-04-10 00:45:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-10 00:45:55,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 326 transitions. [2018-04-10 00:45:55,202 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 326 transitions. Word has length 107 [2018-04-10 00:45:55,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:55,203 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 326 transitions. [2018-04-10 00:45:55,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-10 00:45:55,203 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 326 transitions. [2018-04-10 00:45:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-04-10 00:45:55,205 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:55,205 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] [2018-04-10 00:45:55,205 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:55,205 INFO L82 PathProgramCache]: Analyzing trace with hash -147904416, 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 [2018-04-10 00:45:55,216 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:55,237 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 210 proven. 54 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-04-10 00:45:55,417 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 162 proven. 54 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-04-10 00:45:55,592 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:55,592 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2018-04-10 00:45:55,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-10 00:45:55,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-10 00:45:55,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2018-04-10 00:45:55,593 INFO L87 Difference]: Start difference. First operand 293 states and 326 transitions. Second operand 25 states. [2018-04-10 00:45:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:55,849 INFO L93 Difference]: Finished difference Result 361 states and 400 transitions. [2018-04-10 00:45:55,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-10 00:45:55,849 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 127 [2018-04-10 00:45:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:55,850 INFO L225 Difference]: With dead ends: 361 [2018-04-10 00:45:55,850 INFO L226 Difference]: Without dead ends: 293 [2018-04-10 00:45:55,851 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 225 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2018-04-10 00:45:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-10 00:45:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-10 00:45:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-10 00:45:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 325 transitions. [2018-04-10 00:45:55,867 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 325 transitions. Word has length 127 [2018-04-10 00:45:55,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:55,868 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 325 transitions. [2018-04-10 00:45:55,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-10 00:45:55,868 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 325 transitions. [2018-04-10 00:45:55,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-04-10 00:45:55,869 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:55,869 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] [2018-04-10 00:45:55,869 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:55,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1534054976, 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 [2018-04-10 00:45:55,877 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:55,900 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 219 proven. 85 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-04-10 00:45:56,041 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 179 proven. 85 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-04-10 00:45:56,217 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:56,217 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 30 [2018-04-10 00:45:56,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-10 00:45:56,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-10 00:45:56,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2018-04-10 00:45:56,218 INFO L87 Difference]: Start difference. First operand 293 states and 325 transitions. Second operand 30 states. [2018-04-10 00:45:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:56,479 INFO L93 Difference]: Finished difference Result 361 states and 399 transitions. [2018-04-10 00:45:56,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-10 00:45:56,480 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 134 [2018-04-10 00:45:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:56,482 INFO L225 Difference]: With dead ends: 361 [2018-04-10 00:45:56,482 INFO L226 Difference]: Without dead ends: 293 [2018-04-10 00:45:56,483 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 233 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2018-04-10 00:45:56,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-10 00:45:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-10 00:45:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-10 00:45:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 324 transitions. [2018-04-10 00:45:56,506 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 324 transitions. Word has length 134 [2018-04-10 00:45:56,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:56,506 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 324 transitions. [2018-04-10 00:45:56,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-10 00:45:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 324 transitions. [2018-04-10 00:45:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-04-10 00:45:56,508 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:56,508 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] [2018-04-10 00:45:56,508 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:56,508 INFO L82 PathProgramCache]: Analyzing trace with hash 987122784, 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 [2018-04-10 00:45:56,521 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:56,550 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 212 proven. 123 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-04-10 00:45:56,781 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 188 proven. 123 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-04-10 00:45:57,140 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:57,140 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 35 [2018-04-10 00:45:57,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-10 00:45:57,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-10 00:45:57,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2018-04-10 00:45:57,141 INFO L87 Difference]: Start difference. First operand 293 states and 324 transitions. Second operand 35 states. [2018-04-10 00:45:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:57,621 INFO L93 Difference]: Finished difference Result 361 states and 398 transitions. [2018-04-10 00:45:57,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-04-10 00:45:57,621 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 141 [2018-04-10 00:45:57,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:57,623 INFO L225 Difference]: With dead ends: 361 [2018-04-10 00:45:57,624 INFO L226 Difference]: Without dead ends: 293 [2018-04-10 00:45:57,625 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 [2018-04-10 00:45:57,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-10 00:45:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-10 00:45:57,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-10 00:45:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 323 transitions. [2018-04-10 00:45:57,646 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 323 transitions. Word has length 141 [2018-04-10 00:45:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:57,647 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 323 transitions. [2018-04-10 00:45:57,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-10 00:45:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 323 transitions. [2018-04-10 00:45:57,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-04-10 00:45:57,649 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:57,649 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] [2018-04-10 00:45:57,649 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:57,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1472713152, 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 [2018-04-10 00:45:57,658 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:57,685 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 189 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-04-10 00:45:57,919 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 189 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-04-10 00:45:58,260 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:58,260 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 40 [2018-04-10 00:45:58,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-10 00:45:58,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-10 00:45:58,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1278, Unknown=0, NotChecked=0, Total=1560 [2018-04-10 00:45:58,261 INFO L87 Difference]: Start difference. First operand 293 states and 323 transitions. Second operand 40 states. [2018-04-10 00:45:58,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:45:58,559 INFO L93 Difference]: Finished difference Result 367 states and 404 transitions. [2018-04-10 00:45:58,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-10 00:45:58,559 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 148 [2018-04-10 00:45:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:45:58,560 INFO L225 Difference]: With dead ends: 367 [2018-04-10 00:45:58,560 INFO L226 Difference]: Without dead ends: 293 [2018-04-10 00:45:58,562 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 249 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=653, Invalid=2209, Unknown=0, NotChecked=0, Total=2862 [2018-04-10 00:45:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-10 00:45:58,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-10 00:45:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-10 00:45:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 322 transitions. [2018-04-10 00:45:58,581 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 322 transitions. Word has length 148 [2018-04-10 00:45:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:45:58,582 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 322 transitions. [2018-04-10 00:45:58,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-10 00:45:58,582 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 322 transitions. [2018-04-10 00:45:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-04-10 00:45:58,584 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:45:58,584 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] [2018-04-10 00:45:58,584 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:45:58,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1764651104, 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 [2018-04-10 00:45:58,594 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:45:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:45:58,629 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:45:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-04-10 00:45:58,746 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:45:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-04-10 00:45:59,068 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:45:59,069 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-10 00:45:59,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-10 00:45:59,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-10 00:45:59,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-04-10 00:45:59,070 INFO L87 Difference]: Start difference. First operand 293 states and 322 transitions. Second operand 32 states. [2018-04-10 00:46:00,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:00,437 INFO L93 Difference]: Finished difference Result 362 states and 414 transitions. [2018-04-10 00:46:00,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-10 00:46:00,437 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 155 [2018-04-10 00:46:00,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:00,439 INFO L225 Difference]: With dead ends: 362 [2018-04-10 00:46:00,439 INFO L226 Difference]: Without dead ends: 360 [2018-04-10 00:46:00,441 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2018-04-10 00:46:00,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-04-10 00:46:00,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 357. [2018-04-10 00:46:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-04-10 00:46:00,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 394 transitions. [2018-04-10 00:46:00,465 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 394 transitions. Word has length 155 [2018-04-10 00:46:00,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:00,466 INFO L459 AbstractCegarLoop]: Abstraction has 357 states and 394 transitions. [2018-04-10 00:46:00,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-10 00:46:00,466 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 394 transitions. [2018-04-10 00:46:00,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-04-10 00:46:00,468 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:00,468 INFO L355 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 00:46:00,468 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:00,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1399176427, 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 [2018-04-10 00:46:00,477 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:00,504 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:46:00,855 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:46:01,864 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:01,865 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-10 00:46:01,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-10 00:46:01,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-10 00:46:01,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2018-04-10 00:46:01,866 INFO L87 Difference]: Start difference. First operand 357 states and 394 transitions. Second operand 64 states. [2018-04-10 00:46:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:07,495 INFO L93 Difference]: Finished difference Result 7498 states and 8470 transitions. [2018-04-10 00:46:07,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-04-10 00:46:07,495 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 219 [2018-04-10 00:46:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:07,529 INFO L225 Difference]: With dead ends: 7498 [2018-04-10 00:46:07,529 INFO L226 Difference]: Without dead ends: 7495 [2018-04-10 00:46:07,534 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2018-04-10 00:46:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7495 states. [2018-04-10 00:46:07,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7495 to 581. [2018-04-10 00:46:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-10 00:46:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 650 transitions. [2018-04-10 00:46:07,720 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 650 transitions. Word has length 219 [2018-04-10 00:46:07,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:07,721 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 650 transitions. [2018-04-10 00:46:07,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-10 00:46:07,721 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 650 transitions. [2018-04-10 00:46:07,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-04-10 00:46:07,723 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:07,723 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] [2018-04-10 00:46:07,723 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:07,724 INFO L82 PathProgramCache]: Analyzing trace with hash 130963240, 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 [2018-04-10 00:46:07,736 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:07,786 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 934 proven. 220 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-04-10 00:46:08,373 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 710 proven. 220 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-04-10 00:46:08,724 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:08,724 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 45 [2018-04-10 00:46:08,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-04-10 00:46:08,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-04-10 00:46:08,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1631, Unknown=0, NotChecked=0, Total=1980 [2018-04-10 00:46:08,726 INFO L87 Difference]: Start difference. First operand 581 states and 650 transitions. Second operand 45 states. [2018-04-10 00:46:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:09,155 INFO L93 Difference]: Finished difference Result 713 states and 796 transitions. [2018-04-10 00:46:09,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-04-10 00:46:09,155 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 251 [2018-04-10 00:46:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:09,158 INFO L225 Difference]: With dead ends: 713 [2018-04-10 00:46:09,158 INFO L226 Difference]: Without dead ends: 581 [2018-04-10 00:46:09,159 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 449 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=821, Invalid=2839, Unknown=0, NotChecked=0, Total=3660 [2018-04-10 00:46:09,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-10 00:46:09,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-10 00:46:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-10 00:46:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 649 transitions. [2018-04-10 00:46:09,203 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 649 transitions. Word has length 251 [2018-04-10 00:46:09,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:09,203 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 649 transitions. [2018-04-10 00:46:09,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-04-10 00:46:09,203 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 649 transitions. [2018-04-10 00:46:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-04-10 00:46:09,204 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:09,204 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] [2018-04-10 00:46:09,204 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:09,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1211166984, 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 [2018-04-10 00:46:09,214 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:09,253 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 975 proven. 279 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-04-10 00:46:09,891 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 759 proven. 279 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2018-04-10 00:46:10,261 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:10,262 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 50 [2018-04-10 00:46:10,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-04-10 00:46:10,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-04-10 00:46:10,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2018-04-10 00:46:10,263 INFO L87 Difference]: Start difference. First operand 581 states and 649 transitions. Second operand 50 states. [2018-04-10 00:46:10,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:10,777 INFO L93 Difference]: Finished difference Result 713 states and 795 transitions. [2018-04-10 00:46:10,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-04-10 00:46:10,777 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 258 [2018-04-10 00:46:10,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:10,779 INFO L225 Difference]: With dead ends: 713 [2018-04-10 00:46:10,779 INFO L226 Difference]: Without dead ends: 581 [2018-04-10 00:46:10,780 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 457 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1008, Invalid=3548, Unknown=0, NotChecked=0, Total=4556 [2018-04-10 00:46:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-10 00:46:10,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-10 00:46:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-10 00:46:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 648 transitions. [2018-04-10 00:46:10,839 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 648 transitions. Word has length 258 [2018-04-10 00:46:10,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:10,839 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 648 transitions. [2018-04-10 00:46:10,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-04-10 00:46:10,839 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 648 transitions. [2018-04-10 00:46:10,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-04-10 00:46:10,840 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:10,841 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] [2018-04-10 00:46:10,841 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:10,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1368949976, 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 [2018-04-10 00:46:10,847 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:10,882 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 1000 proven. 345 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-04-10 00:46:11,211 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 800 proven. 345 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-04-10 00:46:11,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:11,657 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 55 [2018-04-10 00:46:11,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-04-10 00:46:11,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-04-10 00:46:11,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2466, Unknown=0, NotChecked=0, Total=2970 [2018-04-10 00:46:11,658 INFO L87 Difference]: Start difference. First operand 581 states and 648 transitions. Second operand 55 states. [2018-04-10 00:46:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:12,298 INFO L93 Difference]: Finished difference Result 713 states and 794 transitions. [2018-04-10 00:46:12,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-04-10 00:46:12,298 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 265 [2018-04-10 00:46:12,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:12,300 INFO L225 Difference]: With dead ends: 713 [2018-04-10 00:46:12,300 INFO L226 Difference]: Without dead ends: 581 [2018-04-10 00:46:12,302 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 465 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1214, Invalid=4336, Unknown=0, NotChecked=0, Total=5550 [2018-04-10 00:46:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-10 00:46:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-10 00:46:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-10 00:46:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 647 transitions. [2018-04-10 00:46:12,357 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 647 transitions. Word has length 265 [2018-04-10 00:46:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:12,358 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 647 transitions. [2018-04-10 00:46:12,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-04-10 00:46:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 647 transitions. [2018-04-10 00:46:12,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-04-10 00:46:12,360 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:12,360 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] [2018-04-10 00:46:12,360 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:12,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1573342472, 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 [2018-04-10 00:46:12,366 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:12,400 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 1009 proven. 418 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2018-04-10 00:46:12,808 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 833 proven. 418 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-04-10 00:46:13,314 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:13,315 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 60 [2018-04-10 00:46:13,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-10 00:46:13,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-10 00:46:13,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=2948, Unknown=0, NotChecked=0, Total=3540 [2018-04-10 00:46:13,317 INFO L87 Difference]: Start difference. First operand 581 states and 647 transitions. Second operand 60 states. [2018-04-10 00:46:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:14,030 INFO L93 Difference]: Finished difference Result 713 states and 793 transitions. [2018-04-10 00:46:14,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-10 00:46:14,069 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 272 [2018-04-10 00:46:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:14,071 INFO L225 Difference]: With dead ends: 713 [2018-04-10 00:46:14,071 INFO L226 Difference]: Without dead ends: 581 [2018-04-10 00:46:14,073 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 [2018-04-10 00:46:14,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-10 00:46:14,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-10 00:46:14,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-10 00:46:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 646 transitions. [2018-04-10 00:46:14,114 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 646 transitions. Word has length 272 [2018-04-10 00:46:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:14,114 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 646 transitions. [2018-04-10 00:46:14,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-10 00:46:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 646 transitions. [2018-04-10 00:46:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-04-10 00:46:14,115 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:14,115 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] [2018-04-10 00:46:14,116 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:14,116 INFO L82 PathProgramCache]: Analyzing trace with hash 808558376, 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 [2018-04-10 00:46:14,122 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:14,164 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 1002 proven. 498 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-04-10 00:46:14,744 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 858 proven. 498 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2018-04-10 00:46:15,431 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:15,432 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 65 [2018-04-10 00:46:15,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-04-10 00:46:15,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-04-10 00:46:15,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=3473, Unknown=0, NotChecked=0, Total=4160 [2018-04-10 00:46:15,434 INFO L87 Difference]: Start difference. First operand 581 states and 646 transitions. Second operand 65 states. [2018-04-10 00:46:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:16,421 INFO L93 Difference]: Finished difference Result 713 states and 792 transitions. [2018-04-10 00:46:16,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-04-10 00:46:16,422 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 279 [2018-04-10 00:46:16,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:16,423 INFO L225 Difference]: With dead ends: 713 [2018-04-10 00:46:16,424 INFO L226 Difference]: Without dead ends: 581 [2018-04-10 00:46:16,425 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 481 SyntacticMatches, 13 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1683, Invalid=6149, Unknown=0, NotChecked=0, Total=7832 [2018-04-10 00:46:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-10 00:46:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-10 00:46:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-10 00:46:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 645 transitions. [2018-04-10 00:46:16,466 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 645 transitions. Word has length 279 [2018-04-10 00:46:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:16,467 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 645 transitions. [2018-04-10 00:46:16,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-04-10 00:46:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 645 transitions. [2018-04-10 00:46:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-04-10 00:46:16,469 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:16,470 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] [2018-04-10 00:46:16,470 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:16,470 INFO L82 PathProgramCache]: Analyzing trace with hash -821253880, 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 [2018-04-10 00:46:16,476 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:16,514 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 979 proven. 585 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-04-10 00:46:17,192 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 875 proven. 585 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2018-04-10 00:46:17,852 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:17,852 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 70 [2018-04-10 00:46:17,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-04-10 00:46:17,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-04-10 00:46:17,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=4041, Unknown=0, NotChecked=0, Total=4830 [2018-04-10 00:46:17,854 INFO L87 Difference]: Start difference. First operand 581 states and 645 transitions. Second operand 70 states. [2018-04-10 00:46:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:18,683 INFO L93 Difference]: Finished difference Result 713 states and 791 transitions. [2018-04-10 00:46:18,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-04-10 00:46:18,683 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 286 [2018-04-10 00:46:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:18,685 INFO L225 Difference]: With dead ends: 713 [2018-04-10 00:46:18,685 INFO L226 Difference]: Without dead ends: 581 [2018-04-10 00:46:18,686 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 489 SyntacticMatches, 14 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1946, Invalid=7174, Unknown=0, NotChecked=0, Total=9120 [2018-04-10 00:46:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-10 00:46:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-10 00:46:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-10 00:46:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 644 transitions. [2018-04-10 00:46:18,751 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 644 transitions. Word has length 286 [2018-04-10 00:46:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:18,751 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 644 transitions. [2018-04-10 00:46:18,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-04-10 00:46:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 644 transitions. [2018-04-10 00:46:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-04-10 00:46:18,754 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:18,754 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] [2018-04-10 00:46:18,754 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:18,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1553153240, 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 [2018-04-10 00:46:18,763 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:18,818 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 940 proven. 679 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-04-10 00:46:19,426 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 884 proven. 679 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-04-10 00:46:20,174 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:20,175 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 75 [2018-04-10 00:46:20,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-04-10 00:46:20,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-04-10 00:46:20,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=898, Invalid=4652, Unknown=0, NotChecked=0, Total=5550 [2018-04-10 00:46:20,176 INFO L87 Difference]: Start difference. First operand 581 states and 644 transitions. Second operand 75 states. [2018-04-10 00:46:21,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:21,069 INFO L93 Difference]: Finished difference Result 713 states and 790 transitions. [2018-04-10 00:46:21,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-04-10 00:46:21,069 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 293 [2018-04-10 00:46:21,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:21,071 INFO L225 Difference]: With dead ends: 713 [2018-04-10 00:46:21,071 INFO L226 Difference]: Without dead ends: 581 [2018-04-10 00:46:21,072 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 [2018-04-10 00:46:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-10 00:46:21,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-10 00:46:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-10 00:46:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 643 transitions. [2018-04-10 00:46:21,108 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 643 transitions. Word has length 293 [2018-04-10 00:46:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:21,108 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 643 transitions. [2018-04-10 00:46:21,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-04-10 00:46:21,108 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 643 transitions. [2018-04-10 00:46:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-04-10 00:46:21,111 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:21,111 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] [2018-04-10 00:46:21,111 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:21,111 INFO L82 PathProgramCache]: Analyzing trace with hash -37681912, 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 [2018-04-10 00:46:21,119 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:21,157 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 885 proven. 780 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-04-10 00:46:21,788 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 885 proven. 780 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-04-10 00:46:22,626 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:22,627 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 80 [2018-04-10 00:46:22,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-04-10 00:46:22,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-04-10 00:46:22,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1014, Invalid=5306, Unknown=0, NotChecked=0, Total=6320 [2018-04-10 00:46:22,628 INFO L87 Difference]: Start difference. First operand 581 states and 643 transitions. Second operand 80 states. [2018-04-10 00:46:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:23,661 INFO L93 Difference]: Finished difference Result 719 states and 796 transitions. [2018-04-10 00:46:23,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-04-10 00:46:23,661 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 300 [2018-04-10 00:46:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:23,664 INFO L225 Difference]: With dead ends: 719 [2018-04-10 00:46:23,664 INFO L226 Difference]: Without dead ends: 581 [2018-04-10 00:46:23,665 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 [2018-04-10 00:46:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-10 00:46:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-10 00:46:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-10 00:46:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 642 transitions. [2018-04-10 00:46:23,704 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 642 transitions. Word has length 300 [2018-04-10 00:46:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:23,704 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 642 transitions. [2018-04-10 00:46:23,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-04-10 00:46:23,705 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 642 transitions. [2018-04-10 00:46:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-04-10 00:46:23,706 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:23,706 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] [2018-04-10 00:46:23,706 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:23,707 INFO L82 PathProgramCache]: Analyzing trace with hash 777578280, 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 [2018-04-10 00:46:23,717 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:23,763 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2018-04-10 00:46:24,112 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2018-04-10 00:46:25,103 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:25,103 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-10 00:46:25,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-10 00:46:25,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-10 00:46:25,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-04-10 00:46:25,105 INFO L87 Difference]: Start difference. First operand 581 states and 642 transitions. Second operand 64 states. [2018-04-10 00:46:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:46:29,680 INFO L93 Difference]: Finished difference Result 714 states and 822 transitions. [2018-04-10 00:46:29,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-10 00:46:29,680 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 307 [2018-04-10 00:46:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:46:29,683 INFO L225 Difference]: With dead ends: 714 [2018-04-10 00:46:29,683 INFO L226 Difference]: Without dead ends: 712 [2018-04-10 00:46:29,684 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 [2018-04-10 00:46:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2018-04-10 00:46:29,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 709. [2018-04-10 00:46:29,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2018-04-10 00:46:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 786 transitions. [2018-04-10 00:46:29,724 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 786 transitions. Word has length 307 [2018-04-10 00:46:29,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:46:29,724 INFO L459 AbstractCegarLoop]: Abstraction has 709 states and 786 transitions. [2018-04-10 00:46:29,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-10 00:46:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 786 transitions. [2018-04-10 00:46:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-04-10 00:46:29,728 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:46:29,728 INFO L355 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 00:46:29,729 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:46:29,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1594884885, 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 [2018-04-10 00:46:29,735 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:46:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:46:29,783 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:46:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:46:31,059 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:46:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:46:34,917 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:46:34,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-04-10 00:46:34,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-10 00:46:34,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-10 00:46:34,920 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4222, Invalid=12034, Unknown=0, NotChecked=0, Total=16256 [2018-04-10 00:46:34,920 INFO L87 Difference]: Start difference. First operand 709 states and 786 transitions. Second operand 128 states. [2018-04-10 00:46:40,406 WARN L151 SmtUtils]: Spent 265ms on a formula simplification. DAG size of input: 316 DAG size of output 6 [2018-04-10 00:46:40,879 WARN L151 SmtUtils]: Spent 245ms on a formula simplification. DAG size of input: 311 DAG size of output 6 [2018-04-10 00:46:41,353 WARN L151 SmtUtils]: Spent 239ms on a formula simplification. DAG size of input: 306 DAG size of output 6 [2018-04-10 00:46:41,835 WARN L151 SmtUtils]: Spent 245ms on a formula simplification. DAG size of input: 301 DAG size of output 6 [2018-04-10 00:46:42,293 WARN L151 SmtUtils]: Spent 226ms on a formula simplification. DAG size of input: 296 DAG size of output 6 [2018-04-10 00:46:42,747 WARN L151 SmtUtils]: Spent 219ms on a formula simplification. DAG size of input: 291 DAG size of output 6 [2018-04-10 00:46:43,207 WARN L151 SmtUtils]: Spent 225ms on a formula simplification. DAG size of input: 286 DAG size of output 6 [2018-04-10 00:46:43,648 WARN L151 SmtUtils]: Spent 202ms on a formula simplification. DAG size of input: 281 DAG size of output 6 [2018-04-10 00:46:44,087 WARN L151 SmtUtils]: Spent 201ms on a formula simplification. DAG size of input: 276 DAG size of output 6 [2018-04-10 00:46:44,531 WARN L151 SmtUtils]: Spent 205ms on a formula simplification. DAG size of input: 271 DAG size of output 6 [2018-04-10 00:46:44,958 WARN L151 SmtUtils]: Spent 187ms on a formula simplification. DAG size of input: 266 DAG size of output 6 [2018-04-10 00:46:45,386 WARN L151 SmtUtils]: Spent 175ms on a formula simplification. DAG size of input: 261 DAG size of output 6 [2018-04-10 00:46:45,814 WARN L151 SmtUtils]: Spent 188ms on a formula simplification. DAG size of input: 256 DAG size of output 6 [2018-04-10 00:46:46,222 WARN L151 SmtUtils]: Spent 171ms on a formula simplification. DAG size of input: 251 DAG size of output 6 [2018-04-10 00:46:46,629 WARN L151 SmtUtils]: Spent 168ms on a formula simplification. DAG size of input: 246 DAG size of output 6 [2018-04-10 00:46:47,027 WARN L151 SmtUtils]: Spent 159ms on a formula simplification. DAG size of input: 241 DAG size of output 6 [2018-04-10 00:46:47,432 WARN L151 SmtUtils]: Spent 166ms on a formula simplification. DAG size of input: 236 DAG size of output 6 [2018-04-10 00:46:47,819 WARN L151 SmtUtils]: Spent 150ms on a formula simplification. DAG size of input: 231 DAG size of output 6 [2018-04-10 00:46:48,193 WARN L151 SmtUtils]: Spent 139ms on a formula simplification. DAG size of input: 226 DAG size of output 6 [2018-04-10 00:46:48,566 WARN L151 SmtUtils]: Spent 136ms on a formula simplification. DAG size of input: 221 DAG size of output 6 [2018-04-10 00:46:48,939 WARN L151 SmtUtils]: Spent 140ms on a formula simplification. DAG size of input: 216 DAG size of output 6 [2018-04-10 00:46:49,297 WARN L151 SmtUtils]: Spent 124ms on a formula simplification. DAG size of input: 211 DAG size of output 6 [2018-04-10 00:46:49,648 WARN L151 SmtUtils]: Spent 119ms on a formula simplification. DAG size of input: 206 DAG size of output 6 [2018-04-10 00:46:49,991 WARN L151 SmtUtils]: Spent 113ms on a formula simplification. DAG size of input: 201 DAG size of output 6 [2018-04-10 00:46:50,328 WARN L151 SmtUtils]: Spent 109ms on a formula simplification. DAG size of input: 196 DAG size of output 6 [2018-04-10 00:46:50,671 WARN L151 SmtUtils]: Spent 104ms on a formula simplification. DAG size of input: 191 DAG size of output 6 [2018-04-10 00:47:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:04,237 INFO L93 Difference]: Finished difference Result 29322 states and 33062 transitions. [2018-04-10 00:47:04,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-04-10 00:47:04,238 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 443 [2018-04-10 00:47:04,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:04,326 INFO L225 Difference]: With dead ends: 29322 [2018-04-10 00:47:04,326 INFO L226 Difference]: Without dead ends: 29319 [2018-04-10 00:47:04,337 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=12158, Invalid=23752, Unknown=0, NotChecked=0, Total=35910 [2018-04-10 00:47:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29319 states. [2018-04-10 00:47:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29319 to 1157. [2018-04-10 00:47:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1298 transitions. [2018-04-10 00:47:04,812 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1298 transitions. Word has length 443 [2018-04-10 00:47:04,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:04,813 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1298 transitions. [2018-04-10 00:47:04,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-04-10 00:47:04,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1298 transitions. [2018-04-10 00:47:04,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-04-10 00:47:04,816 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:04,817 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] [2018-04-10 00:47:04,817 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:04,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2049086648, 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 [2018-04-10 00:47:04,826 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:04,902 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3918 proven. 888 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2018-04-10 00:47:05,750 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2958 proven. 888 refuted. 0 times theorem prover too weak. 2715 trivial. 0 not checked. [2018-04-10 00:47:06,776 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:06,777 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 85 [2018-04-10 00:47:06,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-04-10 00:47:06,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-04-10 00:47:06,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=6003, Unknown=0, NotChecked=0, Total=7140 [2018-04-10 00:47:06,778 INFO L87 Difference]: Start difference. First operand 1157 states and 1298 transitions. Second operand 85 states. [2018-04-10 00:47:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:08,041 INFO L93 Difference]: Finished difference Result 1417 states and 1588 transitions. [2018-04-10 00:47:08,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-04-10 00:47:08,041 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 499 [2018-04-10 00:47:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:08,044 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:47:08,044 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:47:08,046 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 897 SyntacticMatches, 17 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3517 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2849, Invalid=10723, Unknown=0, NotChecked=0, Total=13572 [2018-04-10 00:47:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:47:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:47:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1297 transitions. [2018-04-10 00:47:08,232 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1297 transitions. Word has length 499 [2018-04-10 00:47:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:08,232 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1297 transitions. [2018-04-10 00:47:08,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-04-10 00:47:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1297 transitions. [2018-04-10 00:47:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-04-10 00:47:08,234 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:08,235 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] [2018-04-10 00:47:08,235 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:08,235 INFO L82 PathProgramCache]: Analyzing trace with hash -47116648, 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 [2018-04-10 00:47:08,240 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:08,310 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6676 backedges. 4023 proven. 1003 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2018-04-10 00:47:09,291 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:10,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6676 backedges. 3071 proven. 1003 refuted. 0 times theorem prover too weak. 2602 trivial. 0 not checked. [2018-04-10 00:47:10,456 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:10,457 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 90 [2018-04-10 00:47:10,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-04-10 00:47:10,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-04-10 00:47:10,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1267, Invalid=6743, Unknown=0, NotChecked=0, Total=8010 [2018-04-10 00:47:10,459 INFO L87 Difference]: Start difference. First operand 1157 states and 1297 transitions. Second operand 90 states. [2018-04-10 00:47:11,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:11,944 INFO L93 Difference]: Finished difference Result 1417 states and 1587 transitions. [2018-04-10 00:47:11,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-04-10 00:47:11,945 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 506 [2018-04-10 00:47:11,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:11,946 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:47:11,946 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:47:11,948 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 [2018-04-10 00:47:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:47:12,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:47:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1296 transitions. [2018-04-10 00:47:12,097 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1296 transitions. Word has length 506 [2018-04-10 00:47:12,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:12,097 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1296 transitions. [2018-04-10 00:47:12,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-04-10 00:47:12,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1296 transitions. [2018-04-10 00:47:12,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2018-04-10 00:47:12,100 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:12,100 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] [2018-04-10 00:47:12,100 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:12,100 INFO L82 PathProgramCache]: Analyzing trace with hash -509626184, 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 [2018-04-10 00:47:12,107 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:12,182 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 4112 proven. 1125 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2018-04-10 00:47:13,124 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 3176 proven. 1125 refuted. 0 times theorem prover too weak. 2497 trivial. 0 not checked. [2018-04-10 00:47:14,619 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:14,620 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 95 [2018-04-10 00:47:14,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-04-10 00:47:14,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-04-10 00:47:14,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1404, Invalid=7526, Unknown=0, NotChecked=0, Total=8930 [2018-04-10 00:47:14,621 INFO L87 Difference]: Start difference. First operand 1157 states and 1296 transitions. Second operand 95 states. [2018-04-10 00:47:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:16,137 INFO L93 Difference]: Finished difference Result 1417 states and 1586 transitions. [2018-04-10 00:47:16,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-04-10 00:47:16,137 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 513 [2018-04-10 00:47:16,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:16,140 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:47:16,140 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:47:16,142 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 [2018-04-10 00:47:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:47:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:47:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1295 transitions. [2018-04-10 00:47:16,288 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1295 transitions. Word has length 513 [2018-04-10 00:47:16,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:16,288 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1295 transitions. [2018-04-10 00:47:16,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-04-10 00:47:16,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1295 transitions. [2018-04-10 00:47:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-04-10 00:47:16,291 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:16,291 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] [2018-04-10 00:47:16,291 INFO L408 AbstractCegarLoop]: === Iteration 31 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:16,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1231252120, 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 [2018-04-10 00:47:16,298 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:16,370 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6927 backedges. 4185 proven. 1254 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2018-04-10 00:47:18,250 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6927 backedges. 3273 proven. 1254 refuted. 0 times theorem prover too weak. 2400 trivial. 0 not checked. [2018-04-10 00:47:19,613 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:19,613 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 100 [2018-04-10 00:47:19,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-04-10 00:47:19,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-04-10 00:47:19,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1548, Invalid=8352, Unknown=0, NotChecked=0, Total=9900 [2018-04-10 00:47:19,614 INFO L87 Difference]: Start difference. First operand 1157 states and 1295 transitions. Second operand 100 states. [2018-04-10 00:47:21,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:21,325 INFO L93 Difference]: Finished difference Result 1417 states and 1585 transitions. [2018-04-10 00:47:21,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-04-10 00:47:21,325 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 520 [2018-04-10 00:47:21,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:21,328 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:47:21,328 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:47:21,330 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 921 SyntacticMatches, 20 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4945 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3923, Invalid=14983, Unknown=0, NotChecked=0, Total=18906 [2018-04-10 00:47:21,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:47:21,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:47:21,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1294 transitions. [2018-04-10 00:47:21,515 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1294 transitions. Word has length 520 [2018-04-10 00:47:21,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:21,515 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1294 transitions. [2018-04-10 00:47:21,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-04-10 00:47:21,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1294 transitions. [2018-04-10 00:47:21,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-04-10 00:47:21,517 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:21,518 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] [2018-04-10 00:47:21,518 INFO L408 AbstractCegarLoop]: === Iteration 32 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:21,518 INFO L82 PathProgramCache]: Analyzing trace with hash -984752968, 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 [2018-04-10 00:47:21,524 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:21,614 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7063 backedges. 4242 proven. 1390 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2018-04-10 00:47:23,009 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7063 backedges. 3362 proven. 1390 refuted. 0 times theorem prover too weak. 2311 trivial. 0 not checked. [2018-04-10 00:47:24,475 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:24,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 105 [2018-04-10 00:47:24,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-04-10 00:47:24,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-04-10 00:47:24,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1699, Invalid=9221, Unknown=0, NotChecked=0, Total=10920 [2018-04-10 00:47:24,477 INFO L87 Difference]: Start difference. First operand 1157 states and 1294 transitions. Second operand 105 states. [2018-04-10 00:47:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:26,168 INFO L93 Difference]: Finished difference Result 1417 states and 1584 transitions. [2018-04-10 00:47:26,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-04-10 00:47:26,169 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 527 [2018-04-10 00:47:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:26,170 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:47:26,170 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:47:26,172 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 929 SyntacticMatches, 21 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5475 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4319, Invalid=16561, Unknown=0, NotChecked=0, Total=20880 [2018-04-10 00:47:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:47:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:47:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1293 transitions. [2018-04-10 00:47:26,312 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1293 transitions. Word has length 527 [2018-04-10 00:47:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:26,313 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1293 transitions. [2018-04-10 00:47:26,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-04-10 00:47:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1293 transitions. [2018-04-10 00:47:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-04-10 00:47:26,315 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:26,315 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] [2018-04-10 00:47:26,316 INFO L408 AbstractCegarLoop]: === Iteration 33 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:26,316 INFO L82 PathProgramCache]: Analyzing trace with hash 809813656, 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 [2018-04-10 00:47:26,321 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:26,381 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7206 backedges. 4283 proven. 1533 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-04-10 00:47:27,546 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7206 backedges. 3443 proven. 1533 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2018-04-10 00:47:29,207 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:29,207 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 110 [2018-04-10 00:47:29,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-04-10 00:47:29,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-04-10 00:47:29,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1857, Invalid=10133, Unknown=0, NotChecked=0, Total=11990 [2018-04-10 00:47:29,209 INFO L87 Difference]: Start difference. First operand 1157 states and 1293 transitions. Second operand 110 states. [2018-04-10 00:47:31,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:31,084 INFO L93 Difference]: Finished difference Result 1417 states and 1583 transitions. [2018-04-10 00:47:31,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-04-10 00:47:31,085 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 534 [2018-04-10 00:47:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:31,086 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:47:31,086 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:47:31,088 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 937 SyntacticMatches, 22 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6032 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4734, Invalid=18218, Unknown=0, NotChecked=0, Total=22952 [2018-04-10 00:47:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:47:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:47:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1292 transitions. [2018-04-10 00:47:31,230 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1292 transitions. Word has length 534 [2018-04-10 00:47:31,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:31,230 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1292 transitions. [2018-04-10 00:47:31,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-04-10 00:47:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1292 transitions. [2018-04-10 00:47:31,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-04-10 00:47:31,233 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:31,233 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] [2018-04-10 00:47:31,233 INFO L408 AbstractCegarLoop]: === Iteration 34 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:31,233 INFO L82 PathProgramCache]: Analyzing trace with hash 2070741176, 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 [2018-04-10 00:47:31,239 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:31,300 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 4308 proven. 1683 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2018-04-10 00:47:32,542 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 3516 proven. 1683 refuted. 0 times theorem prover too weak. 2157 trivial. 0 not checked. [2018-04-10 00:47:34,265 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:34,265 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 115 [2018-04-10 00:47:34,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-04-10 00:47:34,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-04-10 00:47:34,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2022, Invalid=11088, Unknown=0, NotChecked=0, Total=13110 [2018-04-10 00:47:34,267 INFO L87 Difference]: Start difference. First operand 1157 states and 1292 transitions. Second operand 115 states. [2018-04-10 00:47:36,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:36,284 INFO L93 Difference]: Finished difference Result 1417 states and 1582 transitions. [2018-04-10 00:47:36,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-04-10 00:47:36,285 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 541 [2018-04-10 00:47:36,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:36,286 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:47:36,286 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:47:36,287 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 945 SyntacticMatches, 23 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6616 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5168, Invalid=19954, Unknown=0, NotChecked=0, Total=25122 [2018-04-10 00:47:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:47:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:47:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1291 transitions. [2018-04-10 00:47:36,426 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1291 transitions. Word has length 541 [2018-04-10 00:47:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:36,427 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1291 transitions. [2018-04-10 00:47:36,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-04-10 00:47:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1291 transitions. [2018-04-10 00:47:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-04-10 00:47:36,430 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:36,431 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] [2018-04-10 00:47:36,431 INFO L408 AbstractCegarLoop]: === Iteration 35 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:36,431 INFO L82 PathProgramCache]: Analyzing trace with hash -745201000, 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 [2018-04-10 00:47:36,436 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:36,498 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7513 backedges. 4317 proven. 1840 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2018-04-10 00:47:37,813 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7513 backedges. 3581 proven. 1840 refuted. 0 times theorem prover too weak. 2092 trivial. 0 not checked. [2018-04-10 00:47:39,711 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:39,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 120 [2018-04-10 00:47:39,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-04-10 00:47:39,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-04-10 00:47:39,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2194, Invalid=12086, Unknown=0, NotChecked=0, Total=14280 [2018-04-10 00:47:39,713 INFO L87 Difference]: Start difference. First operand 1157 states and 1291 transitions. Second operand 120 states. [2018-04-10 00:47:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:42,097 INFO L93 Difference]: Finished difference Result 1417 states and 1581 transitions. [2018-04-10 00:47:42,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-10 00:47:42,097 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 548 [2018-04-10 00:47:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:42,098 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:47:42,098 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:47:42,100 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 [2018-04-10 00:47:42,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:47:42,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:47:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1290 transitions. [2018-04-10 00:47:42,239 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1290 transitions. Word has length 548 [2018-04-10 00:47:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:42,240 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1290 transitions. [2018-04-10 00:47:42,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-04-10 00:47:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1290 transitions. [2018-04-10 00:47:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-04-10 00:47:42,242 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:42,242 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] [2018-04-10 00:47:42,243 INFO L408 AbstractCegarLoop]: === Iteration 36 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:42,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1782391992, 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 [2018-04-10 00:47:42,248 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:42,309 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7677 backedges. 4310 proven. 2004 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2018-04-10 00:47:43,719 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7677 backedges. 3638 proven. 2004 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2018-04-10 00:47:45,721 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:45,721 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 125 [2018-04-10 00:47:45,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-04-10 00:47:45,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-04-10 00:47:45,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2373, Invalid=13127, Unknown=0, NotChecked=0, Total=15500 [2018-04-10 00:47:45,723 INFO L87 Difference]: Start difference. First operand 1157 states and 1290 transitions. Second operand 125 states. [2018-04-10 00:47:47,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:47,950 INFO L93 Difference]: Finished difference Result 1417 states and 1580 transitions. [2018-04-10 00:47:47,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-04-10 00:47:47,951 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 555 [2018-04-10 00:47:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:47,952 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:47:47,952 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:47:47,953 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 961 SyntacticMatches, 25 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7865 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6093, Invalid=23663, Unknown=0, NotChecked=0, Total=29756 [2018-04-10 00:47:47,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:47:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:47:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1289 transitions. [2018-04-10 00:47:48,110 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1289 transitions. Word has length 555 [2018-04-10 00:47:48,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:48,110 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1289 transitions. [2018-04-10 00:47:48,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-04-10 00:47:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1289 transitions. [2018-04-10 00:47:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-04-10 00:47:48,113 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:48,113 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] [2018-04-10 00:47:48,113 INFO L408 AbstractCegarLoop]: === Iteration 37 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:48,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1158971032, 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 [2018-04-10 00:47:48,120 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:48,179 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7848 backedges. 4287 proven. 2175 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2018-04-10 00:47:49,693 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7848 backedges. 3687 proven. 2175 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2018-04-10 00:47:51,993 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:51,994 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 130 [2018-04-10 00:47:51,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-04-10 00:47:51,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-04-10 00:47:51,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2559, Invalid=14211, Unknown=0, NotChecked=0, Total=16770 [2018-04-10 00:47:51,997 INFO L87 Difference]: Start difference. First operand 1157 states and 1289 transitions. Second operand 130 states. [2018-04-10 00:47:54,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:47:54,571 INFO L93 Difference]: Finished difference Result 1417 states and 1579 transitions. [2018-04-10 00:47:54,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-04-10 00:47:54,571 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 562 [2018-04-10 00:47:54,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:47:54,573 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:47:54,573 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:47:54,575 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 969 SyntacticMatches, 26 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8530 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6584, Invalid=25636, Unknown=0, NotChecked=0, Total=32220 [2018-04-10 00:47:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:47:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:47:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:47:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1288 transitions. [2018-04-10 00:47:54,735 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1288 transitions. Word has length 562 [2018-04-10 00:47:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:47:54,735 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1288 transitions. [2018-04-10 00:47:54,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-04-10 00:47:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1288 transitions. [2018-04-10 00:47:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-04-10 00:47:54,738 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:47:54,738 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] [2018-04-10 00:47:54,738 INFO L408 AbstractCegarLoop]: === Iteration 38 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:47:54,738 INFO L82 PathProgramCache]: Analyzing trace with hash 134105272, 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 [2018-04-10 00:47:54,744 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:47:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:47:54,813 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:47:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8026 backedges. 4248 proven. 2353 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2018-04-10 00:47:56,432 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:47:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8026 backedges. 3728 proven. 2353 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2018-04-10 00:47:58,733 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:47:58,733 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 135 [2018-04-10 00:47:58,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-04-10 00:47:58,734 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-04-10 00:47:58,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2752, Invalid=15338, Unknown=0, NotChecked=0, Total=18090 [2018-04-10 00:47:58,735 INFO L87 Difference]: Start difference. First operand 1157 states and 1288 transitions. Second operand 135 states. [2018-04-10 00:48:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:48:01,569 INFO L93 Difference]: Finished difference Result 1417 states and 1578 transitions. [2018-04-10 00:48:01,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-04-10 00:48:01,570 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 569 [2018-04-10 00:48:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:48:01,571 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:48:01,571 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:48:01,572 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 977 SyntacticMatches, 27 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9222 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7094, Invalid=27688, Unknown=0, NotChecked=0, Total=34782 [2018-04-10 00:48:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:48:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:48:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:48:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1287 transitions. [2018-04-10 00:48:01,711 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1287 transitions. Word has length 569 [2018-04-10 00:48:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:48:01,711 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1287 transitions. [2018-04-10 00:48:01,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-04-10 00:48:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1287 transitions. [2018-04-10 00:48:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-04-10 00:48:01,714 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:48:01,714 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] [2018-04-10 00:48:01,714 INFO L408 AbstractCegarLoop]: === Iteration 39 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:48:01,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2038244712, 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 [2018-04-10 00:48:01,720 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:48:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:48:01,782 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:48:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 4193 proven. 2538 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-04-10 00:48:03,513 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:48:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 3761 proven. 2538 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. [2018-04-10 00:48:05,995 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:48:05,995 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 140 [2018-04-10 00:48:05,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-04-10 00:48:05,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-04-10 00:48:05,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2952, Invalid=16508, Unknown=0, NotChecked=0, Total=19460 [2018-04-10 00:48:05,997 INFO L87 Difference]: Start difference. First operand 1157 states and 1287 transitions. Second operand 140 states. [2018-04-10 00:48:08,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:48:08,630 INFO L93 Difference]: Finished difference Result 1417 states and 1577 transitions. [2018-04-10 00:48:08,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-04-10 00:48:08,630 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 576 [2018-04-10 00:48:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:48:08,631 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:48:08,631 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:48:08,634 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 985 SyntacticMatches, 28 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9941 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7623, Invalid=29819, Unknown=0, NotChecked=0, Total=37442 [2018-04-10 00:48:08,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:48:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:48:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:48:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1286 transitions. [2018-04-10 00:48:08,798 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1286 transitions. Word has length 576 [2018-04-10 00:48:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:48:08,798 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1286 transitions. [2018-04-10 00:48:08,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-04-10 00:48:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1286 transitions. [2018-04-10 00:48:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-04-10 00:48:08,801 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:48:08,802 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] [2018-04-10 00:48:08,802 INFO L408 AbstractCegarLoop]: === Iteration 40 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:48:08,802 INFO L82 PathProgramCache]: Analyzing trace with hash -621777736, 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 [2018-04-10 00:48:08,807 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:48:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:48:08,872 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:48:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8403 backedges. 4122 proven. 2730 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2018-04-10 00:48:10,724 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:48:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8403 backedges. 3786 proven. 2730 refuted. 0 times theorem prover too weak. 1887 trivial. 0 not checked. [2018-04-10 00:48:13,336 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:48:13,336 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 145 [2018-04-10 00:48:13,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-04-10 00:48:13,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-04-10 00:48:13,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3159, Invalid=17721, Unknown=0, NotChecked=0, Total=20880 [2018-04-10 00:48:13,338 INFO L87 Difference]: Start difference. First operand 1157 states and 1286 transitions. Second operand 145 states. [2018-04-10 00:48:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:48:16,534 INFO L93 Difference]: Finished difference Result 1417 states and 1576 transitions. [2018-04-10 00:48:16,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-04-10 00:48:16,535 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 583 [2018-04-10 00:48:16,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:48:16,536 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:48:16,536 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:48:16,538 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 993 SyntacticMatches, 29 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10687 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8171, Invalid=32029, Unknown=0, NotChecked=0, Total=40200 [2018-04-10 00:48:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:48:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:48:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:48:16,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1285 transitions. [2018-04-10 00:48:16,677 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1285 transitions. Word has length 583 [2018-04-10 00:48:16,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:48:16,678 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1285 transitions. [2018-04-10 00:48:16,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-04-10 00:48:16,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1285 transitions. [2018-04-10 00:48:16,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2018-04-10 00:48:16,680 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:48:16,681 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] [2018-04-10 00:48:16,681 INFO L408 AbstractCegarLoop]: === Iteration 41 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:48:16,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1985988968, 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 [2018-04-10 00:48:16,687 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:48:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:48:16,754 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:48:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8602 backedges. 4035 proven. 2929 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2018-04-10 00:48:18,712 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:48:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8602 backedges. 3803 proven. 2929 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2018-04-10 00:48:21,523 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:48:21,523 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 150 [2018-04-10 00:48:21,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-04-10 00:48:21,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-04-10 00:48:21,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3373, Invalid=18977, Unknown=0, NotChecked=0, Total=22350 [2018-04-10 00:48:21,525 INFO L87 Difference]: Start difference. First operand 1157 states and 1285 transitions. Second operand 150 states. [2018-04-10 00:48:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:48:24,380 INFO L93 Difference]: Finished difference Result 1417 states and 1575 transitions. [2018-04-10 00:48:24,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-04-10 00:48:24,380 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 590 [2018-04-10 00:48:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:48:24,381 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:48:24,381 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:48:24,383 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1001 SyntacticMatches, 30 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11460 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=8738, Invalid=34318, Unknown=0, NotChecked=0, Total=43056 [2018-04-10 00:48:24,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:48:24,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:48:24,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:48:24,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1284 transitions. [2018-04-10 00:48:24,522 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1284 transitions. Word has length 590 [2018-04-10 00:48:24,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:48:24,522 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1284 transitions. [2018-04-10 00:48:24,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-04-10 00:48:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1284 transitions. [2018-04-10 00:48:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-04-10 00:48:24,525 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:48:24,525 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] [2018-04-10 00:48:24,525 INFO L408 AbstractCegarLoop]: === Iteration 42 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:48:24,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2035519672, 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 [2018-04-10 00:48:24,532 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:48:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:48:24,598 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:48:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8808 backedges. 3932 proven. 3135 refuted. 0 times theorem prover too weak. 1741 trivial. 0 not checked. [2018-04-10 00:48:26,670 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:48:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8808 backedges. 3812 proven. 3135 refuted. 0 times theorem prover too weak. 1861 trivial. 0 not checked. [2018-04-10 00:48:29,629 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:48:29,629 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 155 [2018-04-10 00:48:29,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-04-10 00:48:29,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-04-10 00:48:29,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3594, Invalid=20276, Unknown=0, NotChecked=0, Total=23870 [2018-04-10 00:48:29,631 INFO L87 Difference]: Start difference. First operand 1157 states and 1284 transitions. Second operand 155 states. [2018-04-10 00:48:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:48:33,014 INFO L93 Difference]: Finished difference Result 1417 states and 1574 transitions. [2018-04-10 00:48:33,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-04-10 00:48:33,015 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 597 [2018-04-10 00:48:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:48:33,016 INFO L225 Difference]: With dead ends: 1417 [2018-04-10 00:48:33,016 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:48:33,018 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1253 GetRequests, 1009 SyntacticMatches, 31 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12260 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=9324, Invalid=36686, Unknown=0, NotChecked=0, Total=46010 [2018-04-10 00:48:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:48:33,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:48:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:48:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1283 transitions. [2018-04-10 00:48:33,157 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1283 transitions. Word has length 597 [2018-04-10 00:48:33,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:48:33,157 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1283 transitions. [2018-04-10 00:48:33,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-04-10 00:48:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1283 transitions. [2018-04-10 00:48:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2018-04-10 00:48:33,160 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:48:33,160 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] [2018-04-10 00:48:33,160 INFO L408 AbstractCegarLoop]: === Iteration 43 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:48:33,161 INFO L82 PathProgramCache]: Analyzing trace with hash 808227480, 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 [2018-04-10 00:48:33,168 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:48:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:48:33,236 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:48:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9021 backedges. 3813 proven. 3348 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2018-04-10 00:48:35,443 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:48:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9021 backedges. 3813 proven. 3348 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2018-04-10 00:48:38,589 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:48:38,590 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 160 [2018-04-10 00:48:38,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-04-10 00:48:38,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-04-10 00:48:38,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3822, Invalid=21618, Unknown=0, NotChecked=0, Total=25440 [2018-04-10 00:48:38,592 INFO L87 Difference]: Start difference. First operand 1157 states and 1283 transitions. Second operand 160 states. [2018-04-10 00:48:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:48:42,099 INFO L93 Difference]: Finished difference Result 1423 states and 1580 transitions. [2018-04-10 00:48:42,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-04-10 00:48:42,099 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 604 [2018-04-10 00:48:42,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:48:42,100 INFO L225 Difference]: With dead ends: 1423 [2018-04-10 00:48:42,100 INFO L226 Difference]: Without dead ends: 1157 [2018-04-10 00:48:42,103 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1017 SyntacticMatches, 32 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13087 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=9929, Invalid=39133, Unknown=0, NotChecked=0, Total=49062 [2018-04-10 00:48:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-10 00:48:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-10 00:48:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-10 00:48:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1282 transitions. [2018-04-10 00:48:42,240 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1282 transitions. Word has length 604 [2018-04-10 00:48:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:48:42,240 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1282 transitions. [2018-04-10 00:48:42,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-04-10 00:48:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1282 transitions. [2018-04-10 00:48:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-04-10 00:48:42,243 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:48:42,243 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] [2018-04-10 00:48:42,244 INFO L408 AbstractCegarLoop]: === Iteration 44 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:48:42,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1989692232, 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 [2018-04-10 00:48:42,253 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:48:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:48:42,323 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:48:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9241 backedges. 0 proven. 3813 refuted. 0 times theorem prover too weak. 5428 trivial. 0 not checked. [2018-04-10 00:48:43,645 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:48:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9241 backedges. 0 proven. 3813 refuted. 0 times theorem prover too weak. 5428 trivial. 0 not checked. [2018-04-10 00:48:47,414 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:48:47,414 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-04-10 00:48:47,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-10 00:48:47,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-10 00:48:47,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2238, Invalid=14018, Unknown=0, NotChecked=0, Total=16256 [2018-04-10 00:48:47,416 INFO L87 Difference]: Start difference. First operand 1157 states and 1282 transitions. Second operand 128 states. [2018-04-10 00:48:51,959 WARN L151 SmtUtils]: Spent 279ms on a formula simplification. DAG size of input: 252 DAG size of output 12 [2018-04-10 00:48:52,649 WARN L151 SmtUtils]: Spent 254ms on a formula simplification. DAG size of input: 247 DAG size of output 11 [2018-04-10 00:48:53,120 WARN L151 SmtUtils]: Spent 242ms on a formula simplification. DAG size of input: 244 DAG size of output 12 [2018-04-10 00:48:53,784 WARN L151 SmtUtils]: Spent 234ms on a formula simplification. DAG size of input: 239 DAG size of output 11 [2018-04-10 00:48:54,258 WARN L151 SmtUtils]: Spent 228ms on a formula simplification. DAG size of input: 236 DAG size of output 12 [2018-04-10 00:48:54,903 WARN L151 SmtUtils]: Spent 215ms on a formula simplification. DAG size of input: 231 DAG size of output 11 [2018-04-10 00:48:55,345 WARN L151 SmtUtils]: Spent 214ms on a formula simplification. DAG size of input: 228 DAG size of output 12 [2018-04-10 00:48:56,000 WARN L151 SmtUtils]: Spent 227ms on a formula simplification. DAG size of input: 223 DAG size of output 11 [2018-04-10 00:48:56,430 WARN L151 SmtUtils]: Spent 203ms on a formula simplification. DAG size of input: 220 DAG size of output 12 [2018-04-10 00:48:57,044 WARN L151 SmtUtils]: Spent 190ms on a formula simplification. DAG size of input: 215 DAG size of output 11 [2018-04-10 00:48:57,461 WARN L151 SmtUtils]: Spent 189ms on a formula simplification. DAG size of input: 212 DAG size of output 12 [2018-04-10 00:48:58,064 WARN L151 SmtUtils]: Spent 187ms on a formula simplification. DAG size of input: 207 DAG size of output 11 [2018-04-10 00:48:58,489 WARN L151 SmtUtils]: Spent 193ms on a formula simplification. DAG size of input: 204 DAG size of output 12 [2018-04-10 00:48:59,067 WARN L151 SmtUtils]: Spent 166ms on a formula simplification. DAG size of input: 199 DAG size of output 11 [2018-04-10 00:48:59,455 WARN L151 SmtUtils]: Spent 161ms on a formula simplification. DAG size of input: 196 DAG size of output 12 [2018-04-10 00:49:00,024 WARN L151 SmtUtils]: Spent 158ms on a formula simplification. DAG size of input: 191 DAG size of output 11 [2018-04-10 00:49:00,403 WARN L151 SmtUtils]: Spent 155ms on a formula simplification. DAG size of input: 188 DAG size of output 12 [2018-04-10 00:49:00,963 WARN L151 SmtUtils]: Spent 145ms on a formula simplification. DAG size of input: 183 DAG size of output 11 [2018-04-10 00:49:01,324 WARN L151 SmtUtils]: Spent 138ms on a formula simplification. DAG size of input: 180 DAG size of output 12 [2018-04-10 00:49:01,855 WARN L151 SmtUtils]: Spent 135ms on a formula simplification. DAG size of input: 175 DAG size of output 11 [2018-04-10 00:49:02,205 WARN L151 SmtUtils]: Spent 129ms on a formula simplification. DAG size of input: 172 DAG size of output 12 [2018-04-10 00:49:02,723 WARN L151 SmtUtils]: Spent 129ms on a formula simplification. DAG size of input: 167 DAG size of output 11 [2018-04-10 00:49:03,077 WARN L151 SmtUtils]: Spent 119ms on a formula simplification. DAG size of input: 164 DAG size of output 12 [2018-04-10 00:49:03,573 WARN L151 SmtUtils]: Spent 114ms on a formula simplification. DAG size of input: 159 DAG size of output 11 [2018-04-10 00:49:03,896 WARN L151 SmtUtils]: Spent 110ms on a formula simplification. DAG size of input: 156 DAG size of output 12 [2018-04-10 00:49:04,375 WARN L151 SmtUtils]: Spent 104ms on a formula simplification. DAG size of input: 151 DAG size of output 11 [2018-04-10 00:49:04,687 WARN L151 SmtUtils]: Spent 101ms on a formula simplification. DAG size of input: 148 DAG size of output 12 [2018-04-10 00:49:05,160 WARN L151 SmtUtils]: Spent 106ms on a formula simplification. DAG size of input: 143 DAG size of output 11 [2018-04-10 00:49:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 00:49:13,539 INFO L93 Difference]: Finished difference Result 1418 states and 1638 transitions. [2018-04-10 00:49:13,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-04-10 00:49:13,539 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 611 [2018-04-10 00:49:13,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 00:49:13,541 INFO L225 Difference]: With dead ends: 1418 [2018-04-10 00:49:13,541 INFO L226 Difference]: Without dead ends: 1416 [2018-04-10 00:49:13,543 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1375 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15068 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=18976, Invalid=60266, Unknown=0, NotChecked=0, Total=79242 [2018-04-10 00:49:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2018-04-10 00:49:13,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1413. [2018-04-10 00:49:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2018-04-10 00:49:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1570 transitions. [2018-04-10 00:49:13,685 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1570 transitions. Word has length 611 [2018-04-10 00:49:13,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 00:49:13,686 INFO L459 AbstractCegarLoop]: Abstraction has 1413 states and 1570 transitions. [2018-04-10 00:49:13,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-04-10 00:49:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1570 transitions. [2018-04-10 00:49:13,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2018-04-10 00:49:13,691 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 00:49:13,692 INFO L355 BasicCegarLoop]: trace histogram [127, 126, 126, 126, 126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 00:49:13,692 INFO L408 AbstractCegarLoop]: === Iteration 45 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-10 00:49:13,692 INFO L82 PathProgramCache]: Analyzing trace with hash 251952363, 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 [2018-04-10 00:49:13,698 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 00:49:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 00:49:13,779 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 00:49:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 55377 backedges. 0 proven. 55377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:49:18,700 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-10 00:49:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 55377 backedges. 0 proven. 55377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 00:49:33,944 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 00:49:33,945 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 255 [2018-04-10 00:49:33,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-04-10 00:49:33,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-04-10 00:49:33,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16638, Invalid=48642, Unknown=0, NotChecked=0, Total=65280 [2018-04-10 00:49:33,949 INFO L87 Difference]: Start difference. First operand 1413 states and 1570 transitions. Second operand 256 states. Received shutdown request... [2018-04-10 00:49:34,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-10 00:49:34,769 WARN L519 AbstractCegarLoop]: Verification canceled [2018-04-10 00:49:34,773 WARN L197 ceAbstractionStarter]: Timeout [2018-04-10 00:49:34,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.04 12:49:34 BasicIcfg [2018-04-10 00:49:34,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-10 00:49:34,775 INFO L168 Benchmark]: Toolchain (without parser) took 225765.75 ms. Allocated memory was 302.5 MB in the beginning and 1.1 GB in the end (delta: 831.5 MB). Free memory was 245.7 MB in the beginning and 644.9 MB in the end (delta: -399.2 MB). Peak memory consumption was 432.3 MB. Max. memory is 5.3 GB. [2018-04-10 00:49:34,776 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 302.5 MB. Free memory is still 264.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 00:49:34,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.64 ms. Allocated memory is still 302.5 MB. Free memory was 245.7 MB in the beginning and 236.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. [2018-04-10 00:49:34,777 INFO L168 Benchmark]: Boogie Preprocessor took 22.64 ms. Allocated memory is still 302.5 MB. Free memory was 236.6 MB in the beginning and 234.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-04-10 00:49:34,777 INFO L168 Benchmark]: RCFGBuilder took 273.46 ms. Allocated memory was 302.5 MB in the beginning and 462.9 MB in the end (delta: 160.4 MB). Free memory was 234.6 MB in the beginning and 433.7 MB in the end (delta: -199.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 5.3 GB. [2018-04-10 00:49:34,778 INFO L168 Benchmark]: IcfgTransformer took 17.05 ms. Allocated memory is still 462.9 MB. Free memory was 433.7 MB in the beginning and 432.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-04-10 00:49:34,778 INFO L168 Benchmark]: TraceAbstraction took 225250.48 ms. Allocated memory was 462.9 MB in the beginning and 1.1 GB in the end (delta: 671.1 MB). Free memory was 432.3 MB in the beginning and 644.9 MB in the end (delta: -212.5 MB). Peak memory consumption was 458.6 MB. Max. memory is 5.3 GB. [2018-04-10 00:49:34,781 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 302.5 MB. Free memory is still 264.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 196.64 ms. Allocated memory is still 302.5 MB. Free memory was 245.7 MB in the beginning and 236.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.64 ms. Allocated memory is still 302.5 MB. Free memory was 236.6 MB in the beginning and 234.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 273.46 ms. Allocated memory was 302.5 MB in the beginning and 462.9 MB in the end (delta: 160.4 MB). Free memory was 234.6 MB in the beginning and 433.7 MB in the end (delta: -199.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 5.3 GB. * IcfgTransformer took 17.05 ms. Allocated memory is still 462.9 MB. Free memory was 433.7 MB in the beginning and 432.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 225250.48 ms. Allocated memory was 462.9 MB in the beginning and 1.1 GB in the end (delta: 671.1 MB). Free memory was 432.3 MB in the beginning and 644.9 MB in the end (delta: -212.5 MB). Peak memory consumption was 458.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was constructing difference of abstraction (1413states) and interpolant automaton (currently 10 states, 256 states before enhancement), while ReachableStatesComputation was computing reachable states (56 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 10 states, 256 states before enhancement), while ReachableStatesComputation was computing reachable states (56 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 10 states, 256 states before enhancement), while ReachableStatesComputation was computing reachable states (56 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 10 states, 256 states before enhancement), while ReachableStatesComputation was computing reachable states (56 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 10 states, 256 states before enhancement), while ReachableStatesComputation was computing reachable states (56 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 5 error locations. TIMEOUT Result, 225.1s OverallTime, 45 OverallIterations, 127 TraceHistogramMax, 115.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6110 SDtfs, 43898 SDslu, 131693 SDs, 0 SdLazy, 84504 SolverSat, 8193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30795 GetRequests, 25571 SyntacticMatches, 528 SemanticMatches, 4696 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164302 ImplicationChecksByTransitivity, 162.5s 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: 3.9s AutomataMinimizationTime, 44 MinimizatonAttempts, 37270 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 102.2s 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_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-04-10_00-49-34-790.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_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-10_00-49-34-790.csv Completed graceful shutdown