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 0.1.23-8168ed2-m [2018-04-12 01:53:21,767 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-12 01:53:21,769 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-12 01:53:21,783 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-12 01:53:21,783 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-12 01:53:21,784 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-12 01:53:21,785 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-12 01:53:21,786 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-12 01:53:21,788 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-12 01:53:21,789 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-12 01:53:21,790 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-12 01:53:21,790 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-12 01:53:21,791 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-12 01:53:21,792 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-12 01:53:21,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-12 01:53:21,795 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-12 01:53:21,796 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-12 01:53:21,798 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-12 01:53:21,799 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-12 01:53:21,800 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-12 01:53:21,803 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-12 01:53:21,803 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-12 01:53:21,803 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-12 01:53:21,805 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-12 01:53:21,805 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-12 01:53:21,807 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-12 01:53:21,807 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-12 01:53:21,808 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-12 01:53:21,809 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-12 01:53:21,809 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-12 01:53:21,810 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-12 01:53:21,810 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 [2018-04-12 01:53:21,842 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-12 01:53:21,842 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-12 01:53:21,843 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-12 01:53:21,843 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-12 01:53:21,844 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-12 01:53:21,844 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-12 01:53:21,844 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-12 01:53:21,844 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-12 01:53:21,845 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-12 01:53:21,845 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-12 01:53:21,845 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-12 01:53:21,845 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-12 01:53:21,846 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-12 01:53:21,846 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-12 01:53:21,846 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-12 01:53:21,846 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-12 01:53:21,846 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-12 01:53:21,847 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-12 01:53:21,847 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-12 01:53:21,847 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-12 01:53:21,847 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-12 01:53:21,847 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-12 01:53:21,848 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-12 01:53:21,848 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-12 01:53:21,848 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-12 01:53:21,848 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-12 01:53:21,848 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-12 01:53:21,849 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-12 01:53:21,849 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-12 01:53:21,849 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-12 01:53:21,849 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-12 01:53:21,849 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-12 01:53:21,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-12 01:53:21,850 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-12 01:53:21,851 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-12 01:53:21,852 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-12 01:53:21,852 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-12 01:53:21,852 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-12 01:53:21,893 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-12 01:53:21,907 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-12 01:53:21,911 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-12 01:53:21,913 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-12 01:53:21,913 INFO L276 PluginConnector]: CDTParser initialized [2018-04-12 01:53:21,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_false-valid-deref_ground.i [2018-04-12 01:53:22,291 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG7b6015407 [2018-04-12 01:53:22,432 INFO L287 CDTParser]: IsIndexed: true [2018-04-12 01:53:22,432 INFO L288 CDTParser]: Found 1 translation units. [2018-04-12 01:53:22,433 INFO L168 CDTParser]: Scanning standard_strcpy_false-valid-deref_ground.i [2018-04-12 01:53:22,434 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-12 01:53:22,434 INFO L215 ultiparseSymbolTable]: [2018-04-12 01:53:22,434 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-12 01:53:22,435 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert ('__VERIFIER_assert') in standard_strcpy_false-valid-deref_ground.i [2018-04-12 01:53:22,435 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in standard_strcpy_false-valid-deref_ground.i [2018-04-12 01:53:22,435 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-12 01:53:22,435 INFO L233 ultiparseSymbolTable]: [2018-04-12 01:53:22,452 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG7b6015407 [2018-04-12 01:53:22,457 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-12 01:53:22,459 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-04-12 01:53:22,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-12 01:53:22,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-12 01:53:22,468 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-12 01:53:22,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.04 01:53:22" (1/1) ... [2018-04-12 01:53:22,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d74e861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22, skipping insertion in model container [2018-04-12 01:53:22,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.04 01:53:22" (1/1) ... [2018-04-12 01:53:22,492 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-12 01:53:22,506 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-12 01:53:22,666 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-12 01:53:22,688 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-12 01:53:22,693 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 5 non ball SCCs. Number of states in SCCs 5. [2018-04-12 01:53:22,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22 WrapperNode [2018-04-12 01:53:22,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-12 01:53:22,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-12 01:53:22,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-12 01:53:22,702 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-12 01:53:22,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22" (1/1) ... [2018-04-12 01:53:22,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22" (1/1) ... [2018-04-12 01:53:22,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22" (1/1) ... [2018-04-12 01:53:22,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22" (1/1) ... [2018-04-12 01:53:22,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22" (1/1) ... [2018-04-12 01:53:22,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22" (1/1) ... [2018-04-12 01:53:22,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22" (1/1) ... [2018-04-12 01:53:22,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-12 01:53:22,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-12 01:53:22,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-12 01:53:22,729 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-12 01:53:22,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22" (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 [2018-04-12 01:53:22,815 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-12 01:53:22,815 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-12 01:53:22,815 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert [2018-04-12 01:53:22,816 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-12 01:53:22,816 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-04-12 01:53:22,816 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fstandard_strcpy_false_valid_deref_ground_i____VERIFIER_assert [2018-04-12 01:53:22,816 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-12 01:53:22,816 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-12 01:53:22,816 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-12 01:53:23,080 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-12 01:53:23,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 01:53:23 BoogieIcfgContainer [2018-04-12 01:53:23,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-12 01:53:23,081 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-04-12 01:53:23,082 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-04-12 01:53:23,082 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-04-12 01:53:23,085 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 01:53:23" (1/1) ... [2018-04-12 01:53:23,089 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-04-12 01:53:23,099 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 5 non ball SCCs. Number of states in SCCs 5. [2018-04-12 01:53:23,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 12.04 01:53:23 BasicIcfg [2018-04-12 01:53:23,100 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-04-12 01:53:23,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-12 01:53:23,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-12 01:53:23,103 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-12 01:53:23,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.04 01:53:22" (1/4) ... [2018-04-12 01:53:23,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798f3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.04 01:53:23, skipping insertion in model container [2018-04-12 01:53:23,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 01:53:22" (2/4) ... [2018-04-12 01:53:23,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798f3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.04 01:53:23, skipping insertion in model container [2018-04-12 01:53:23,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 01:53:23" (3/4) ... [2018-04-12 01:53:23,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798f3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.04 01:53:23, skipping insertion in model container [2018-04-12 01:53:23,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 12.04 01:53:23" (4/4) ... [2018-04-12 01:53:23,106 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_strcpy_false-valid-deref_ground.ileft_unchanged_by_heapseparator [2018-04-12 01:53:23,113 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-12 01:53:23,125 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-04-12 01:53:23,168 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-12 01:53:23,169 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-12 01:53:23,169 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-12 01:53:23,169 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-12 01:53:23,169 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-12 01:53:23,169 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-12 01:53:23,169 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-12 01:53:23,169 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-12 01:53:23,170 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-12 01:53:23,170 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-12 01:53:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-04-12 01:53:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-04-12 01:53:23,188 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:23,189 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 01:53:23,189 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:23,193 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 [2018-04-12 01:53:23,206 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:23,241 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:23,297 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:23,353 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-12 01:53:23,354 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-12 01:53:23,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-12 01:53:23,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-12 01:53:23,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-12 01:53:23,375 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2018-04-12 01:53:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:23,489 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2018-04-12 01:53:23,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-12 01:53:23,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-04-12 01:53:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:23,501 INFO L225 Difference]: With dead ends: 108 [2018-04-12 01:53:23,502 INFO L226 Difference]: Without dead ends: 71 [2018-04-12 01:53:23,505 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 [2018-04-12 01:53:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-04-12 01:53:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 45. [2018-04-12 01:53:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-04-12 01:53:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-04-12 01:53:23,578 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 9 [2018-04-12 01:53:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:23,578 INFO L459 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-04-12 01:53:23,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-12 01:53:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-04-12 01:53:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-04-12 01:53:23,579 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:23,579 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 01:53:23,579 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:23,580 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 [2018-04-12 01:53:23,593 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:23,606 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:23,632 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:23,696 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-12 01:53:23,696 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-12 01:53:23,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-12 01:53:23,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-12 01:53:23,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-12 01:53:23,699 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2018-04-12 01:53:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:23,727 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-04-12 01:53:23,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-12 01:53:23,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-04-12 01:53:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:23,729 INFO L225 Difference]: With dead ends: 54 [2018-04-12 01:53:23,729 INFO L226 Difference]: Without dead ends: 52 [2018-04-12 01:53:23,730 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 [2018-04-12 01:53:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-04-12 01:53:23,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-04-12 01:53:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-04-12 01:53:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-04-12 01:53:23,738 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 15 [2018-04-12 01:53:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:23,739 INFO L459 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-04-12 01:53:23,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-12 01:53:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-04-12 01:53:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-12 01:53:23,740 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:23,741 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 01:53:23,741 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:23,741 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 [2018-04-12 01:53:23,748 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:23,761 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:23,803 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:23,935 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:23,936 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-12 01:53:23,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-12 01:53:23,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-12 01:53:23,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-04-12 01:53:23,937 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 8 states. [2018-04-12 01:53:24,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:24,270 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2018-04-12 01:53:24,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-12 01:53:24,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-04-12 01:53:24,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:24,274 INFO L225 Difference]: With dead ends: 178 [2018-04-12 01:53:24,274 INFO L226 Difference]: Without dead ends: 175 [2018-04-12 01:53:24,275 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 [2018-04-12 01:53:24,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-04-12 01:53:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 77. [2018-04-12 01:53:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-12 01:53:24,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2018-04-12 01:53:24,302 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 23 [2018-04-12 01:53:24,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:24,303 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2018-04-12 01:53:24,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-12 01:53:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2018-04-12 01:53:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-04-12 01:53:24,304 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:24,304 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] [2018-04-12 01:53:24,305 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:24,305 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 [2018-04-12 01:53:24,312 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:24,324 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-04-12 01:53:24,394 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-04-12 01:53:24,474 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-12 01:53:24,474 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-04-12 01:53:24,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-12 01:53:24,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-12 01:53:24,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-12 01:53:24,475 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 5 states. [2018-04-12 01:53:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:24,686 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2018-04-12 01:53:24,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-12 01:53:24,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-04-12 01:53:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:24,689 INFO L225 Difference]: With dead ends: 97 [2018-04-12 01:53:24,689 INFO L226 Difference]: Without dead ends: 77 [2018-04-12 01:53:24,690 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 [2018-04-12 01:53:24,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-12 01:53:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-04-12 01:53:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-12 01:53:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-04-12 01:53:24,702 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 27 [2018-04-12 01:53:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:24,702 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-04-12 01:53:24,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-12 01:53:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-04-12 01:53:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-12 01:53:24,703 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:24,704 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] [2018-04-12 01:53:24,704 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:24,704 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 [2018-04-12 01:53:24,722 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:24,748 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:24,844 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:24,979 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:24,979 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-04-12 01:53:24,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-12 01:53:24,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-12 01:53:24,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-04-12 01:53:24,980 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 10 states. [2018-04-12 01:53:25,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:25,128 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2018-04-12 01:53:25,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-12 01:53:25,129 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-04-12 01:53:25,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:25,130 INFO L225 Difference]: With dead ends: 103 [2018-04-12 01:53:25,130 INFO L226 Difference]: Without dead ends: 77 [2018-04-12 01:53:25,130 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-04-12 01:53:25,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-12 01:53:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-04-12 01:53:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-12 01:53:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2018-04-12 01:53:25,138 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 34 [2018-04-12 01:53:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:25,139 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2018-04-12 01:53:25,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-12 01:53:25,139 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2018-04-12 01:53:25,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-04-12 01:53:25,140 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:25,141 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] [2018-04-12 01:53:25,141 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:25,141 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 [2018-04-12 01:53:25,147 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:25,161 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-12 01:53:25,221 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-12 01:53:25,315 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:25,315 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-12 01:53:25,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-12 01:53:25,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-12 01:53:25,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-04-12 01:53:25,316 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 8 states. [2018-04-12 01:53:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:25,442 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2018-04-12 01:53:25,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-12 01:53:25,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-04-12 01:53:25,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:25,444 INFO L225 Difference]: With dead ends: 98 [2018-04-12 01:53:25,444 INFO L226 Difference]: Without dead ends: 96 [2018-04-12 01:53:25,444 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 [2018-04-12 01:53:25,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-04-12 01:53:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2018-04-12 01:53:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-04-12 01:53:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2018-04-12 01:53:25,454 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 41 [2018-04-12 01:53:25,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:25,455 INFO L459 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2018-04-12 01:53:25,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-12 01:53:25,455 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2018-04-12 01:53:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-04-12 01:53:25,457 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:25,458 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 01:53:25,458 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:25,458 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 [2018-04-12 01:53:25,468 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:25,479 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:25,570 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:25,738 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:25,738 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-12 01:53:25,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-12 01:53:25,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-12 01:53:25,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-04-12 01:53:25,739 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 16 states. [2018-04-12 01:53:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:26,407 INFO L93 Difference]: Finished difference Result 538 states and 610 transitions. [2018-04-12 01:53:26,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-12 01:53:26,410 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2018-04-12 01:53:26,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:26,414 INFO L225 Difference]: With dead ends: 538 [2018-04-12 01:53:26,414 INFO L226 Difference]: Without dead ends: 535 [2018-04-12 01:53:26,415 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2018-04-12 01:53:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-04-12 01:53:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 149. [2018-04-12 01:53:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-04-12 01:53:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2018-04-12 01:53:26,441 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 51 [2018-04-12 01:53:26,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:26,442 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2018-04-12 01:53:26,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-12 01:53:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2018-04-12 01:53:26,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-04-12 01:53:26,444 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:26,444 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] [2018-04-12 01:53:26,444 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:26,444 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 [2018-04-12 01:53:26,454 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:26,483 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:26,604 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-04-12 01:53:26,604 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-12 01:53:26,711 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:26,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-04-12 01:53:26,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-12 01:53:26,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-12 01:53:26,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-04-12 01:53:26,712 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand 15 states. [2018-04-12 01:53:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:26,838 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2018-04-12 01:53:26,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-12 01:53:26,838 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2018-04-12 01:53:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:26,840 INFO L225 Difference]: With dead ends: 185 [2018-04-12 01:53:26,841 INFO L226 Difference]: Without dead ends: 149 [2018-04-12 01:53:26,842 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 [2018-04-12 01:53:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-04-12 01:53:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-04-12 01:53:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-04-12 01:53:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2018-04-12 01:53:26,855 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 65 [2018-04-12 01:53:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:26,855 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2018-04-12 01:53:26,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-12 01:53:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2018-04-12 01:53:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-04-12 01:53:26,857 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:26,857 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] [2018-04-12 01:53:26,857 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:26,858 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 [2018-04-12 01:53:26,867 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:26,886 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-04-12 01:53:27,116 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-04-12 01:53:27,309 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:27,309 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2018-04-12 01:53:27,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-12 01:53:27,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-12 01:53:27,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-04-12 01:53:27,310 INFO L87 Difference]: Start difference. First operand 149 states and 163 transitions. Second operand 20 states. [2018-04-12 01:53:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:27,544 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2018-04-12 01:53:27,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-12 01:53:27,544 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 72 [2018-04-12 01:53:27,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:27,546 INFO L225 Difference]: With dead ends: 191 [2018-04-12 01:53:27,546 INFO L226 Difference]: Without dead ends: 149 [2018-04-12 01:53:27,547 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2018-04-12 01:53:27,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-04-12 01:53:27,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-04-12 01:53:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-04-12 01:53:27,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2018-04-12 01:53:27,579 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 72 [2018-04-12 01:53:27,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:27,580 INFO L459 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2018-04-12 01:53:27,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-12 01:53:27,580 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2018-04-12 01:53:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-04-12 01:53:27,583 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:27,583 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] [2018-04-12 01:53:27,583 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:27,585 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 [2018-04-12 01:53:27,614 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:27,639 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-04-12 01:53:27,822 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-04-12 01:53:27,985 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:27,986 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-12 01:53:27,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-12 01:53:27,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-12 01:53:27,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-12 01:53:27,987 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 16 states. [2018-04-12 01:53:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:28,440 INFO L93 Difference]: Finished difference Result 186 states and 210 transitions. [2018-04-12 01:53:28,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-12 01:53:28,441 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2018-04-12 01:53:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:28,442 INFO L225 Difference]: With dead ends: 186 [2018-04-12 01:53:28,442 INFO L226 Difference]: Without dead ends: 184 [2018-04-12 01:53:28,443 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-04-12 01:53:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-04-12 01:53:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2018-04-12 01:53:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-04-12 01:53:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2018-04-12 01:53:28,455 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 79 [2018-04-12 01:53:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:28,455 INFO L459 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2018-04-12 01:53:28,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-12 01:53:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2018-04-12 01:53:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-04-12 01:53:28,458 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:28,458 INFO L355 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 01:53:28,458 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:28,458 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 [2018-04-12 01:53:28,473 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:28,496 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:28,721 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:29,338 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:29,338 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-12 01:53:29,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-12 01:53:29,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-12 01:53:29,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2018-04-12 01:53:29,340 INFO L87 Difference]: Start difference. First operand 181 states and 198 transitions. Second operand 32 states. [2018-04-12 01:53:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:31,826 INFO L93 Difference]: Finished difference Result 1962 states and 2222 transitions. [2018-04-12 01:53:31,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-12 01:53:31,829 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 107 [2018-04-12 01:53:31,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:31,841 INFO L225 Difference]: With dead ends: 1962 [2018-04-12 01:53:31,841 INFO L226 Difference]: Without dead ends: 1959 [2018-04-12 01:53:31,843 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2018-04-12 01:53:31,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2018-04-12 01:53:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 293. [2018-04-12 01:53:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-12 01:53:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 326 transitions. [2018-04-12 01:53:31,899 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 326 transitions. Word has length 107 [2018-04-12 01:53:31,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:31,900 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 326 transitions. [2018-04-12 01:53:31,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-12 01:53:31,900 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 326 transitions. [2018-04-12 01:53:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-04-12 01:53:31,901 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:31,901 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] [2018-04-12 01:53:31,901 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:31,902 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 [2018-04-12 01:53:31,922 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:31,945 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 210 proven. 54 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-04-12 01:53:32,406 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 162 proven. 54 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-04-12 01:53:32,627 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:32,627 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2018-04-12 01:53:32,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-12 01:53:32,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-12 01:53:32,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2018-04-12 01:53:32,629 INFO L87 Difference]: Start difference. First operand 293 states and 326 transitions. Second operand 25 states. [2018-04-12 01:53:32,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:32,962 INFO L93 Difference]: Finished difference Result 361 states and 400 transitions. [2018-04-12 01:53:32,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-12 01:53:32,963 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 127 [2018-04-12 01:53:32,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:32,964 INFO L225 Difference]: With dead ends: 361 [2018-04-12 01:53:32,965 INFO L226 Difference]: Without dead ends: 293 [2018-04-12 01:53:32,966 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 225 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2018-04-12 01:53:32,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-12 01:53:32,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-12 01:53:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-12 01:53:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 325 transitions. [2018-04-12 01:53:32,992 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 325 transitions. Word has length 127 [2018-04-12 01:53:32,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:32,993 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 325 transitions. [2018-04-12 01:53:32,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-12 01:53:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 325 transitions. [2018-04-12 01:53:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-04-12 01:53:32,995 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:32,995 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] [2018-04-12 01:53:32,995 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:32,995 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 [2018-04-12 01:53:33,004 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:33,034 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 219 proven. 85 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-04-12 01:53:33,227 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 179 proven. 85 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-04-12 01:53:33,476 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:33,476 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 30 [2018-04-12 01:53:33,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-12 01:53:33,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-12 01:53:33,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2018-04-12 01:53:33,478 INFO L87 Difference]: Start difference. First operand 293 states and 325 transitions. Second operand 30 states. [2018-04-12 01:53:33,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:33,841 INFO L93 Difference]: Finished difference Result 361 states and 399 transitions. [2018-04-12 01:53:33,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-12 01:53:33,841 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 134 [2018-04-12 01:53:33,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:33,843 INFO L225 Difference]: With dead ends: 361 [2018-04-12 01:53:33,843 INFO L226 Difference]: Without dead ends: 293 [2018-04-12 01:53:33,845 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 233 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2018-04-12 01:53:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-12 01:53:33,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-12 01:53:33,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-12 01:53:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 324 transitions. [2018-04-12 01:53:33,874 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 324 transitions. Word has length 134 [2018-04-12 01:53:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:33,875 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 324 transitions. [2018-04-12 01:53:33,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-12 01:53:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 324 transitions. [2018-04-12 01:53:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-04-12 01:53:33,876 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:33,876 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] [2018-04-12 01:53:33,876 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:33,877 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 [2018-04-12 01:53:33,896 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:33,919 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 212 proven. 123 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-04-12 01:53:34,246 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 188 proven. 123 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-04-12 01:53:34,572 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:34,572 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 35 [2018-04-12 01:53:34,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-12 01:53:34,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-12 01:53:34,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2018-04-12 01:53:34,574 INFO L87 Difference]: Start difference. First operand 293 states and 324 transitions. Second operand 35 states. [2018-04-12 01:53:36,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:36,393 INFO L93 Difference]: Finished difference Result 361 states and 398 transitions. [2018-04-12 01:53:36,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-04-12 01:53:36,393 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 141 [2018-04-12 01:53:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:36,395 INFO L225 Difference]: With dead ends: 361 [2018-04-12 01:53:36,395 INFO L226 Difference]: Without dead ends: 293 [2018-04-12 01:53:36,396 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2018-04-12 01:53:36,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-12 01:53:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-12 01:53:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-12 01:53:36,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 323 transitions. [2018-04-12 01:53:36,420 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 323 transitions. Word has length 141 [2018-04-12 01:53:36,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:36,420 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 323 transitions. [2018-04-12 01:53:36,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-12 01:53:36,420 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 323 transitions. [2018-04-12 01:53:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-04-12 01:53:36,422 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:36,422 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] [2018-04-12 01:53:36,422 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:36,422 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 [2018-04-12 01:53:36,441 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:36,471 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 189 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-04-12 01:53:36,935 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 189 proven. 168 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-04-12 01:53:37,322 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:37,322 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 40 [2018-04-12 01:53:37,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-12 01:53:37,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-12 01:53:37,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1278, Unknown=0, NotChecked=0, Total=1560 [2018-04-12 01:53:37,323 INFO L87 Difference]: Start difference. First operand 293 states and 323 transitions. Second operand 40 states. [2018-04-12 01:53:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:37,788 INFO L93 Difference]: Finished difference Result 367 states and 404 transitions. [2018-04-12 01:53:37,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-12 01:53:37,789 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 148 [2018-04-12 01:53:37,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:37,790 INFO L225 Difference]: With dead ends: 367 [2018-04-12 01:53:37,790 INFO L226 Difference]: Without dead ends: 293 [2018-04-12 01:53:37,791 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 249 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=653, Invalid=2209, Unknown=0, NotChecked=0, Total=2862 [2018-04-12 01:53:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-12 01:53:37,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-04-12 01:53:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-04-12 01:53:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 322 transitions. [2018-04-12 01:53:37,804 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 322 transitions. Word has length 148 [2018-04-12 01:53:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:37,805 INFO L459 AbstractCegarLoop]: Abstraction has 293 states and 322 transitions. [2018-04-12 01:53:37,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-12 01:53:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 322 transitions. [2018-04-12 01:53:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-04-12 01:53:37,807 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:37,807 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] [2018-04-12 01:53:37,807 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:37,807 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 [2018-04-12 01:53:37,819 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:37,851 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-04-12 01:53:38,359 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-04-12 01:53:39,143 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:39,143 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-12 01:53:39,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-12 01:53:39,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-12 01:53:39,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-04-12 01:53:39,144 INFO L87 Difference]: Start difference. First operand 293 states and 322 transitions. Second operand 32 states. [2018-04-12 01:53:40,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:40,933 INFO L93 Difference]: Finished difference Result 362 states and 414 transitions. [2018-04-12 01:53:40,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-12 01:53:40,933 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 155 [2018-04-12 01:53:40,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:40,935 INFO L225 Difference]: With dead ends: 362 [2018-04-12 01:53:40,935 INFO L226 Difference]: Without dead ends: 360 [2018-04-12 01:53:40,936 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2018-04-12 01:53:40,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2018-04-12 01:53:40,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 357. [2018-04-12 01:53:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-04-12 01:53:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 394 transitions. [2018-04-12 01:53:40,960 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 394 transitions. Word has length 155 [2018-04-12 01:53:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:40,961 INFO L459 AbstractCegarLoop]: Abstraction has 357 states and 394 transitions. [2018-04-12 01:53:40,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-12 01:53:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 394 transitions. [2018-04-12 01:53:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-04-12 01:53:40,962 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:40,962 INFO L355 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 01:53:40,962 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:40,962 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 [2018-04-12 01:53:40,976 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:41,018 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:42,170 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:53:43,632 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:43,633 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-12 01:53:43,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-12 01:53:43,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-12 01:53:43,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2018-04-12 01:53:43,635 INFO L87 Difference]: Start difference. First operand 357 states and 394 transitions. Second operand 64 states. [2018-04-12 01:53:46,662 WARN L151 SmtUtils]: Spent 141ms on a formula simplification. DAG size of input: 156 DAG size of output 6 [2018-04-12 01:53:47,281 WARN L151 SmtUtils]: Spent 138ms on a formula simplification. DAG size of input: 151 DAG size of output 6 [2018-04-12 01:53:47,518 WARN L151 SmtUtils]: Spent 126ms on a formula simplification. DAG size of input: 146 DAG size of output 6 [2018-04-12 01:53:47,846 WARN L151 SmtUtils]: Spent 109ms on a formula simplification. DAG size of input: 141 DAG size of output 6 [2018-04-12 01:53:48,112 WARN L151 SmtUtils]: Spent 159ms on a formula simplification. DAG size of input: 136 DAG size of output 6 [2018-04-12 01:53:49,007 WARN L151 SmtUtils]: Spent 112ms on a formula simplification. DAG size of input: 116 DAG size of output 6 [2018-04-12 01:53:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:53,124 INFO L93 Difference]: Finished difference Result 7498 states and 8470 transitions. [2018-04-12 01:53:53,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-04-12 01:53:53,125 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 219 [2018-04-12 01:53:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:53,155 INFO L225 Difference]: With dead ends: 7498 [2018-04-12 01:53:53,155 INFO L226 Difference]: Without dead ends: 7495 [2018-04-12 01:53:53,159 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2018-04-12 01:53:53,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7495 states. [2018-04-12 01:53:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7495 to 581. [2018-04-12 01:53:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-12 01:53:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 650 transitions. [2018-04-12 01:53:53,319 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 650 transitions. Word has length 219 [2018-04-12 01:53:53,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:53,320 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 650 transitions. [2018-04-12 01:53:53,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-12 01:53:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 650 transitions. [2018-04-12 01:53:53,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-04-12 01:53:53,322 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:53,322 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] [2018-04-12 01:53:53,323 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:53,323 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 [2018-04-12 01:53:53,333 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:53,381 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 934 proven. 220 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2018-04-12 01:53:53,958 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 710 proven. 220 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-04-12 01:53:54,414 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:54,414 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 45 [2018-04-12 01:53:54,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-04-12 01:53:54,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-04-12 01:53:54,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1631, Unknown=0, NotChecked=0, Total=1980 [2018-04-12 01:53:54,416 INFO L87 Difference]: Start difference. First operand 581 states and 650 transitions. Second operand 45 states. [2018-04-12 01:53:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:55,045 INFO L93 Difference]: Finished difference Result 713 states and 796 transitions. [2018-04-12 01:53:55,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-04-12 01:53:55,048 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 251 [2018-04-12 01:53:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:55,051 INFO L225 Difference]: With dead ends: 713 [2018-04-12 01:53:55,051 INFO L226 Difference]: Without dead ends: 581 [2018-04-12 01:53:55,053 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 449 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=821, Invalid=2839, Unknown=0, NotChecked=0, Total=3660 [2018-04-12 01:53:55,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-12 01:53:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-12 01:53:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-12 01:53:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 649 transitions. [2018-04-12 01:53:55,125 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 649 transitions. Word has length 251 [2018-04-12 01:53:55,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:55,126 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 649 transitions. [2018-04-12 01:53:55,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-04-12 01:53:55,126 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 649 transitions. [2018-04-12 01:53:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-04-12 01:53:55,128 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:55,128 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] [2018-04-12 01:53:55,128 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:55,129 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 [2018-04-12 01:53:55,139 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:55,195 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 975 proven. 279 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-04-12 01:53:55,760 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 759 proven. 279 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2018-04-12 01:53:56,308 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:56,309 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 50 [2018-04-12 01:53:56,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-04-12 01:53:56,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-04-12 01:53:56,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2027, Unknown=0, NotChecked=0, Total=2450 [2018-04-12 01:53:56,310 INFO L87 Difference]: Start difference. First operand 581 states and 649 transitions. Second operand 50 states. [2018-04-12 01:53:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:56,993 INFO L93 Difference]: Finished difference Result 713 states and 795 transitions. [2018-04-12 01:53:56,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-04-12 01:53:56,993 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 258 [2018-04-12 01:53:56,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:56,995 INFO L225 Difference]: With dead ends: 713 [2018-04-12 01:53:56,995 INFO L226 Difference]: Without dead ends: 581 [2018-04-12 01:53:56,997 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 457 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1008, Invalid=3548, Unknown=0, NotChecked=0, Total=4556 [2018-04-12 01:53:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-12 01:53:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-12 01:53:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-12 01:53:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 648 transitions. [2018-04-12 01:53:57,068 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 648 transitions. Word has length 258 [2018-04-12 01:53:57,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:57,069 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 648 transitions. [2018-04-12 01:53:57,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-04-12 01:53:57,069 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 648 transitions. [2018-04-12 01:53:57,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-04-12 01:53:57,071 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:57,072 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] [2018-04-12 01:53:57,072 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:57,072 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 [2018-04-12 01:53:57,082 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:57,132 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 1000 proven. 345 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-04-12 01:53:57,755 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:53:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 800 proven. 345 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-04-12 01:53:58,358 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:53:58,358 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 55 [2018-04-12 01:53:58,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-04-12 01:53:58,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-04-12 01:53:58,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2466, Unknown=0, NotChecked=0, Total=2970 [2018-04-12 01:53:58,359 INFO L87 Difference]: Start difference. First operand 581 states and 648 transitions. Second operand 55 states. [2018-04-12 01:53:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:53:59,293 INFO L93 Difference]: Finished difference Result 713 states and 794 transitions. [2018-04-12 01:53:59,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-04-12 01:53:59,293 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 265 [2018-04-12 01:53:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:53:59,295 INFO L225 Difference]: With dead ends: 713 [2018-04-12 01:53:59,295 INFO L226 Difference]: Without dead ends: 581 [2018-04-12 01:53:59,296 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 465 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1214, Invalid=4336, Unknown=0, NotChecked=0, Total=5550 [2018-04-12 01:53:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-12 01:53:59,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-12 01:53:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-12 01:53:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 647 transitions. [2018-04-12 01:53:59,351 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 647 transitions. Word has length 265 [2018-04-12 01:53:59,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:53:59,351 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 647 transitions. [2018-04-12 01:53:59,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-04-12 01:53:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 647 transitions. [2018-04-12 01:53:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-04-12 01:53:59,353 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:53:59,353 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] [2018-04-12 01:53:59,353 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:53:59,353 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 [2018-04-12 01:53:59,359 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:53:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:53:59,396 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:53:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 1009 proven. 418 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2018-04-12 01:53:59,867 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:54:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1723 backedges. 833 proven. 418 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-04-12 01:54:00,503 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:54:00,503 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 60 [2018-04-12 01:54:00,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-12 01:54:00,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-12 01:54:00,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=2948, Unknown=0, NotChecked=0, Total=3540 [2018-04-12 01:54:00,505 INFO L87 Difference]: Start difference. First operand 581 states and 647 transitions. Second operand 60 states. [2018-04-12 01:54:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:54:01,508 INFO L93 Difference]: Finished difference Result 713 states and 793 transitions. [2018-04-12 01:54:01,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-12 01:54:01,508 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 272 [2018-04-12 01:54:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:54:01,510 INFO L225 Difference]: With dead ends: 713 [2018-04-12 01:54:01,510 INFO L226 Difference]: Without dead ends: 581 [2018-04-12 01:54:01,512 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 473 SyntacticMatches, 12 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1439, Invalid=5203, Unknown=0, NotChecked=0, Total=6642 [2018-04-12 01:54:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-12 01:54:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-12 01:54:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-12 01:54:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 646 transitions. [2018-04-12 01:54:01,568 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 646 transitions. Word has length 272 [2018-04-12 01:54:01,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:54:01,569 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 646 transitions. [2018-04-12 01:54:01,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-12 01:54:01,569 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 646 transitions. [2018-04-12 01:54:01,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-04-12 01:54:01,571 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:54:01,572 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] [2018-04-12 01:54:01,572 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:54:01,572 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 [2018-04-12 01:54:01,586 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:54:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:54:01,675 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:54:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 1002 proven. 498 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-04-12 01:54:02,248 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:54:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 858 proven. 498 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2018-04-12 01:54:03,406 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:54:03,406 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 65 [2018-04-12 01:54:03,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-04-12 01:54:03,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-04-12 01:54:03,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=3473, Unknown=0, NotChecked=0, Total=4160 [2018-04-12 01:54:03,408 INFO L87 Difference]: Start difference. First operand 581 states and 646 transitions. Second operand 65 states. [2018-04-12 01:54:04,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:54:04,856 INFO L93 Difference]: Finished difference Result 713 states and 792 transitions. [2018-04-12 01:54:04,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-04-12 01:54:04,856 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 279 [2018-04-12 01:54:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:54:04,859 INFO L225 Difference]: With dead ends: 713 [2018-04-12 01:54:04,860 INFO L226 Difference]: Without dead ends: 581 [2018-04-12 01:54:04,861 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 481 SyntacticMatches, 13 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1683, Invalid=6149, Unknown=0, NotChecked=0, Total=7832 [2018-04-12 01:54:04,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-12 01:54:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-12 01:54:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-12 01:54:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 645 transitions. [2018-04-12 01:54:04,920 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 645 transitions. Word has length 279 [2018-04-12 01:54:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:54:04,921 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 645 transitions. [2018-04-12 01:54:04,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-04-12 01:54:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 645 transitions. [2018-04-12 01:54:04,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-04-12 01:54:04,922 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:54:04,922 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] [2018-04-12 01:54:04,922 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:54:04,923 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 [2018-04-12 01:54:04,930 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:54:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:54:04,976 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:54:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 979 proven. 585 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-04-12 01:54:05,595 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:54:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 875 proven. 585 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2018-04-12 01:54:06,492 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:54:06,492 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 70 [2018-04-12 01:54:06,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-04-12 01:54:06,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-04-12 01:54:06,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=4041, Unknown=0, NotChecked=0, Total=4830 [2018-04-12 01:54:06,494 INFO L87 Difference]: Start difference. First operand 581 states and 645 transitions. Second operand 70 states. [2018-04-12 01:54:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:54:07,567 INFO L93 Difference]: Finished difference Result 713 states and 791 transitions. [2018-04-12 01:54:07,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-04-12 01:54:07,567 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 286 [2018-04-12 01:54:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:54:07,571 INFO L225 Difference]: With dead ends: 713 [2018-04-12 01:54:07,571 INFO L226 Difference]: Without dead ends: 581 [2018-04-12 01:54:07,572 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 489 SyntacticMatches, 14 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1946, Invalid=7174, Unknown=0, NotChecked=0, Total=9120 [2018-04-12 01:54:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-12 01:54:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-12 01:54:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-12 01:54:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 644 transitions. [2018-04-12 01:54:07,616 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 644 transitions. Word has length 286 [2018-04-12 01:54:07,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:54:07,616 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 644 transitions. [2018-04-12 01:54:07,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-04-12 01:54:07,616 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 644 transitions. [2018-04-12 01:54:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-04-12 01:54:07,619 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:54:07,619 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] [2018-04-12 01:54:07,619 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:54:07,619 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 [2018-04-12 01:54:07,628 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:54:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:54:07,681 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:54:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 940 proven. 679 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-04-12 01:54:08,873 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:54:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 884 proven. 679 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-04-12 01:54:09,855 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:54:09,856 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 75 [2018-04-12 01:54:09,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-04-12 01:54:09,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-04-12 01:54:09,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=898, Invalid=4652, Unknown=0, NotChecked=0, Total=5550 [2018-04-12 01:54:09,857 INFO L87 Difference]: Start difference. First operand 581 states and 644 transitions. Second operand 75 states. [2018-04-12 01:54:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:54:11,013 INFO L93 Difference]: Finished difference Result 713 states and 790 transitions. [2018-04-12 01:54:11,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-04-12 01:54:11,013 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 293 [2018-04-12 01:54:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:54:11,015 INFO L225 Difference]: With dead ends: 713 [2018-04-12 01:54:11,015 INFO L226 Difference]: Without dead ends: 581 [2018-04-12 01:54:11,016 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 497 SyntacticMatches, 15 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2228, Invalid=8278, Unknown=0, NotChecked=0, Total=10506 [2018-04-12 01:54:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-12 01:54:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-12 01:54:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-12 01:54:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 643 transitions. [2018-04-12 01:54:11,054 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 643 transitions. Word has length 293 [2018-04-12 01:54:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:54:11,055 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 643 transitions. [2018-04-12 01:54:11,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-04-12 01:54:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 643 transitions. [2018-04-12 01:54:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-04-12 01:54:11,057 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:54:11,057 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] [2018-04-12 01:54:11,057 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:54:11,058 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 [2018-04-12 01:54:11,072 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:54:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:54:11,118 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:54:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 885 proven. 780 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-04-12 01:54:11,976 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:54:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2085 backedges. 885 proven. 780 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-04-12 01:54:13,107 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:54:13,107 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 80 [2018-04-12 01:54:13,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-04-12 01:54:13,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-04-12 01:54:13,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1014, Invalid=5306, Unknown=0, NotChecked=0, Total=6320 [2018-04-12 01:54:13,109 INFO L87 Difference]: Start difference. First operand 581 states and 643 transitions. Second operand 80 states. [2018-04-12 01:54:14,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:54:14,538 INFO L93 Difference]: Finished difference Result 719 states and 796 transitions. [2018-04-12 01:54:14,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-04-12 01:54:14,539 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 300 [2018-04-12 01:54:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:54:14,541 INFO L225 Difference]: With dead ends: 719 [2018-04-12 01:54:14,541 INFO L226 Difference]: Without dead ends: 581 [2018-04-12 01:54:14,542 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 505 SyntacticMatches, 16 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3095 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2529, Invalid=9461, Unknown=0, NotChecked=0, Total=11990 [2018-04-12 01:54:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-04-12 01:54:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2018-04-12 01:54:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2018-04-12 01:54:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 642 transitions. [2018-04-12 01:54:14,584 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 642 transitions. Word has length 300 [2018-04-12 01:54:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:54:14,584 INFO L459 AbstractCegarLoop]: Abstraction has 581 states and 642 transitions. [2018-04-12 01:54:14,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-04-12 01:54:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 642 transitions. [2018-04-12 01:54:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-04-12 01:54:14,587 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:54:14,587 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] [2018-04-12 01:54:14,587 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:54:14,588 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 [2018-04-12 01:54:14,594 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:54:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:54:14,639 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:54:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2018-04-12 01:54:15,099 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:54:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2193 backedges. 0 proven. 885 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2018-04-12 01:54:16,293 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:54:16,293 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-12 01:54:16,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-12 01:54:16,294 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-12 01:54:16,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-04-12 01:54:16,294 INFO L87 Difference]: Start difference. First operand 581 states and 642 transitions. Second operand 64 states. [2018-04-12 01:54:18,264 WARN L151 SmtUtils]: Spent 103ms on a formula simplification. DAG size of input: 119 DAG size of output 11 [2018-04-12 01:54:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:54:22,433 INFO L93 Difference]: Finished difference Result 714 states and 822 transitions. [2018-04-12 01:54:22,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-12 01:54:22,433 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 307 [2018-04-12 01:54:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:54:22,435 INFO L225 Difference]: With dead ends: 714 [2018-04-12 01:54:22,435 INFO L226 Difference]: Without dead ends: 712 [2018-04-12 01:54:22,436 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-04-12 01:54:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2018-04-12 01:54:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 709. [2018-04-12 01:54:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2018-04-12 01:54:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 786 transitions. [2018-04-12 01:54:22,520 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 786 transitions. Word has length 307 [2018-04-12 01:54:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:54:22,521 INFO L459 AbstractCegarLoop]: Abstraction has 709 states and 786 transitions. [2018-04-12 01:54:22,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-12 01:54:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 786 transitions. [2018-04-12 01:54:22,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-04-12 01:54:22,526 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:54:22,526 INFO L355 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 01:54:22,526 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:54:22,526 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 [2018-04-12 01:54:22,553 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:54:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:54:22,603 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:54:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:54:24,496 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:54:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 01:54:29,670 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:54:29,670 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-04-12 01:54:29,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-12 01:54:29,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-12 01:54:29,672 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=4222, Invalid=12034, Unknown=0, NotChecked=0, Total=16256 [2018-04-12 01:54:29,672 INFO L87 Difference]: Start difference. First operand 709 states and 786 transitions. Second operand 128 states. [2018-04-12 01:54:37,494 WARN L151 SmtUtils]: Spent 369ms on a formula simplification. DAG size of input: 316 DAG size of output 6 [2018-04-12 01:54:38,064 WARN L151 SmtUtils]: Spent 293ms on a formula simplification. DAG size of input: 311 DAG size of output 6 [2018-04-12 01:54:38,609 WARN L151 SmtUtils]: Spent 274ms on a formula simplification. DAG size of input: 306 DAG size of output 6 [2018-04-12 01:54:39,164 WARN L151 SmtUtils]: Spent 283ms on a formula simplification. DAG size of input: 301 DAG size of output 6 [2018-04-12 01:54:39,751 WARN L151 SmtUtils]: Spent 322ms on a formula simplification. DAG size of input: 296 DAG size of output 6 [2018-04-12 01:54:40,397 WARN L151 SmtUtils]: Spent 375ms on a formula simplification. DAG size of input: 291 DAG size of output 6 [2018-04-12 01:54:41,023 WARN L151 SmtUtils]: Spent 269ms on a formula simplification. DAG size of input: 286 DAG size of output 6 [2018-04-12 01:54:41,605 WARN L151 SmtUtils]: Spent 231ms on a formula simplification. DAG size of input: 281 DAG size of output 6 [2018-04-12 01:54:42,201 WARN L151 SmtUtils]: Spent 273ms on a formula simplification. DAG size of input: 276 DAG size of output 6 [2018-04-12 01:54:42,791 WARN L151 SmtUtils]: Spent 252ms on a formula simplification. DAG size of input: 271 DAG size of output 6 [2018-04-12 01:54:43,375 WARN L151 SmtUtils]: Spent 274ms on a formula simplification. DAG size of input: 266 DAG size of output 6 [2018-04-12 01:54:43,950 WARN L151 SmtUtils]: Spent 276ms on a formula simplification. DAG size of input: 261 DAG size of output 6 [2018-04-12 01:54:44,479 WARN L151 SmtUtils]: Spent 250ms on a formula simplification. DAG size of input: 256 DAG size of output 6 [2018-04-12 01:54:45,036 WARN L151 SmtUtils]: Spent 197ms on a formula simplification. DAG size of input: 251 DAG size of output 6 [2018-04-12 01:54:45,616 WARN L151 SmtUtils]: Spent 248ms on a formula simplification. DAG size of input: 246 DAG size of output 6 [2018-04-12 01:54:46,103 WARN L151 SmtUtils]: Spent 207ms on a formula simplification. DAG size of input: 241 DAG size of output 6 [2018-04-12 01:54:46,627 WARN L151 SmtUtils]: Spent 241ms on a formula simplification. DAG size of input: 236 DAG size of output 6 [2018-04-12 01:54:47,146 WARN L151 SmtUtils]: Spent 190ms on a formula simplification. DAG size of input: 231 DAG size of output 6 [2018-04-12 01:54:47,641 WARN L151 SmtUtils]: Spent 191ms on a formula simplification. DAG size of input: 226 DAG size of output 6 [2018-04-12 01:54:48,142 WARN L151 SmtUtils]: Spent 160ms on a formula simplification. DAG size of input: 221 DAG size of output 6 [2018-04-12 01:54:48,618 WARN L151 SmtUtils]: Spent 162ms on a formula simplification. DAG size of input: 216 DAG size of output 6 [2018-04-12 01:54:49,115 WARN L151 SmtUtils]: Spent 206ms on a formula simplification. DAG size of input: 211 DAG size of output 6 [2018-04-12 01:54:49,556 WARN L151 SmtUtils]: Spent 176ms on a formula simplification. DAG size of input: 206 DAG size of output 6 [2018-04-12 01:54:49,963 WARN L151 SmtUtils]: Spent 140ms on a formula simplification. DAG size of input: 201 DAG size of output 6 [2018-04-12 01:54:50,472 WARN L151 SmtUtils]: Spent 165ms on a formula simplification. DAG size of input: 196 DAG size of output 6 [2018-04-12 01:54:50,939 WARN L151 SmtUtils]: Spent 128ms on a formula simplification. DAG size of input: 191 DAG size of output 6 [2018-04-12 01:54:51,365 WARN L151 SmtUtils]: Spent 101ms on a formula simplification. DAG size of input: 186 DAG size of output 6 [2018-04-12 01:54:51,737 WARN L151 SmtUtils]: Spent 120ms on a formula simplification. DAG size of input: 181 DAG size of output 6 [2018-04-12 01:54:52,174 WARN L151 SmtUtils]: Spent 112ms on a formula simplification. DAG size of input: 176 DAG size of output 6 [2018-04-12 01:54:52,619 WARN L151 SmtUtils]: Spent 140ms on a formula simplification. DAG size of input: 171 DAG size of output 6 [2018-04-12 01:54:53,056 WARN L151 SmtUtils]: Spent 114ms on a formula simplification. DAG size of input: 166 DAG size of output 6 [2018-04-12 01:54:53,881 WARN L151 SmtUtils]: Spent 110ms on a formula simplification. DAG size of input: 156 DAG size of output 6 [2018-04-12 01:55:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:55:09,065 INFO L93 Difference]: Finished difference Result 29322 states and 33062 transitions. [2018-04-12 01:55:09,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-04-12 01:55:09,065 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 443 [2018-04-12 01:55:09,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:55:09,164 INFO L225 Difference]: With dead ends: 29322 [2018-04-12 01:55:09,165 INFO L226 Difference]: Without dead ends: 29319 [2018-04-12 01:55:09,177 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=12158, Invalid=23752, Unknown=0, NotChecked=0, Total=35910 [2018-04-12 01:55:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29319 states. [2018-04-12 01:55:09,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29319 to 1157. [2018-04-12 01:55:09,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:55:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1298 transitions. [2018-04-12 01:55:09,828 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1298 transitions. Word has length 443 [2018-04-12 01:55:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:55:09,829 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1298 transitions. [2018-04-12 01:55:09,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-04-12 01:55:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1298 transitions. [2018-04-12 01:55:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-04-12 01:55:09,833 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:55:09,834 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] [2018-04-12 01:55:09,834 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:55:09,834 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 [2018-04-12 01:55:09,843 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:55:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:55:09,924 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:55:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 3918 proven. 888 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2018-04-12 01:55:11,001 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:55:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2958 proven. 888 refuted. 0 times theorem prover too weak. 2715 trivial. 0 not checked. [2018-04-12 01:55:12,197 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:55:12,198 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 85 [2018-04-12 01:55:12,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-04-12 01:55:12,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-04-12 01:55:12,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=6003, Unknown=0, NotChecked=0, Total=7140 [2018-04-12 01:55:12,199 INFO L87 Difference]: Start difference. First operand 1157 states and 1298 transitions. Second operand 85 states. [2018-04-12 01:55:13,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:55:13,694 INFO L93 Difference]: Finished difference Result 1417 states and 1588 transitions. [2018-04-12 01:55:13,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-04-12 01:55:13,733 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 499 [2018-04-12 01:55:13,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:55:13,735 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:55:13,736 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:55:13,738 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 897 SyntacticMatches, 17 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3517 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2849, Invalid=10723, Unknown=0, NotChecked=0, Total=13572 [2018-04-12 01:55:13,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:55:13,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:55:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:55:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1297 transitions. [2018-04-12 01:55:13,988 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1297 transitions. Word has length 499 [2018-04-12 01:55:13,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:55:13,989 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1297 transitions. [2018-04-12 01:55:13,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-04-12 01:55:13,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1297 transitions. [2018-04-12 01:55:13,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-04-12 01:55:13,993 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:55:13,993 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] [2018-04-12 01:55:13,994 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:55:13,994 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 [2018-04-12 01:55:14,013 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:55:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:55:14,088 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:55:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6676 backedges. 4023 proven. 1003 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2018-04-12 01:55:15,194 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:55:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6676 backedges. 3071 proven. 1003 refuted. 0 times theorem prover too weak. 2602 trivial. 0 not checked. [2018-04-12 01:55:16,769 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:55:16,769 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 90 [2018-04-12 01:55:16,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-04-12 01:55:16,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-04-12 01:55:16,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1267, Invalid=6743, Unknown=0, NotChecked=0, Total=8010 [2018-04-12 01:55:16,771 INFO L87 Difference]: Start difference. First operand 1157 states and 1297 transitions. Second operand 90 states. [2018-04-12 01:55:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:55:18,486 INFO L93 Difference]: Finished difference Result 1417 states and 1587 transitions. [2018-04-12 01:55:18,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-04-12 01:55:18,486 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 506 [2018-04-12 01:55:18,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:55:18,489 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:55:18,489 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:55:18,491 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 905 SyntacticMatches, 18 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3966 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3188, Invalid=12064, Unknown=0, NotChecked=0, Total=15252 [2018-04-12 01:55:18,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:55:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:55:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:55:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1296 transitions. [2018-04-12 01:55:18,679 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1296 transitions. Word has length 506 [2018-04-12 01:55:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:55:18,679 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1296 transitions. [2018-04-12 01:55:18,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-04-12 01:55:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1296 transitions. [2018-04-12 01:55:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2018-04-12 01:55:18,683 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:55:18,683 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] [2018-04-12 01:55:18,683 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:55:18,683 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 [2018-04-12 01:55:18,690 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:55:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:55:18,774 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:55:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 4112 proven. 1125 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2018-04-12 01:55:20,352 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:55:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 3176 proven. 1125 refuted. 0 times theorem prover too weak. 2497 trivial. 0 not checked. [2018-04-12 01:55:22,222 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:55:22,223 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 95 [2018-04-12 01:55:22,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-04-12 01:55:22,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-04-12 01:55:22,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1404, Invalid=7526, Unknown=0, NotChecked=0, Total=8930 [2018-04-12 01:55:22,224 INFO L87 Difference]: Start difference. First operand 1157 states and 1296 transitions. Second operand 95 states. [2018-04-12 01:55:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:55:23,952 INFO L93 Difference]: Finished difference Result 1417 states and 1586 transitions. [2018-04-12 01:55:23,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-04-12 01:55:23,953 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 513 [2018-04-12 01:55:23,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:55:23,956 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:55:23,956 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:55:23,958 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 913 SyntacticMatches, 19 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4442 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3546, Invalid=13484, Unknown=0, NotChecked=0, Total=17030 [2018-04-12 01:55:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:55:24,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:55:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:55:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1295 transitions. [2018-04-12 01:55:24,214 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1295 transitions. Word has length 513 [2018-04-12 01:55:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:55:24,214 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1295 transitions. [2018-04-12 01:55:24,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-04-12 01:55:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1295 transitions. [2018-04-12 01:55:24,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-04-12 01:55:24,218 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:55:24,218 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] [2018-04-12 01:55:24,218 INFO L408 AbstractCegarLoop]: === Iteration 31 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:55:24,219 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 [2018-04-12 01:55:24,225 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:55:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:55:24,299 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:55:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6927 backedges. 4185 proven. 1254 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2018-04-12 01:55:26,112 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:55:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6927 backedges. 3273 proven. 1254 refuted. 0 times theorem prover too weak. 2400 trivial. 0 not checked. [2018-04-12 01:55:27,856 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:55:27,857 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 100 [2018-04-12 01:55:27,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-04-12 01:55:27,857 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-04-12 01:55:27,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1548, Invalid=8352, Unknown=0, NotChecked=0, Total=9900 [2018-04-12 01:55:27,858 INFO L87 Difference]: Start difference. First operand 1157 states and 1295 transitions. Second operand 100 states. [2018-04-12 01:55:30,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:55:30,150 INFO L93 Difference]: Finished difference Result 1417 states and 1585 transitions. [2018-04-12 01:55:30,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-04-12 01:55:30,151 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 520 [2018-04-12 01:55:30,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:55:30,152 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:55:30,153 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:55:30,154 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 921 SyntacticMatches, 20 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4945 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3923, Invalid=14983, Unknown=0, NotChecked=0, Total=18906 [2018-04-12 01:55:30,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:55:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:55:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:55:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1294 transitions. [2018-04-12 01:55:30,316 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1294 transitions. Word has length 520 [2018-04-12 01:55:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:55:30,316 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1294 transitions. [2018-04-12 01:55:30,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-04-12 01:55:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1294 transitions. [2018-04-12 01:55:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-04-12 01:55:30,320 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:55:30,320 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] [2018-04-12 01:55:30,320 INFO L408 AbstractCegarLoop]: === Iteration 32 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:55:30,320 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 [2018-04-12 01:55:30,350 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:55:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:55:30,432 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:55:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7063 backedges. 4242 proven. 1390 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2018-04-12 01:55:31,694 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:55:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7063 backedges. 3362 proven. 1390 refuted. 0 times theorem prover too weak. 2311 trivial. 0 not checked. [2018-04-12 01:55:33,729 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:55:33,729 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 105 [2018-04-12 01:55:33,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-04-12 01:55:33,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-04-12 01:55:33,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1699, Invalid=9221, Unknown=0, NotChecked=0, Total=10920 [2018-04-12 01:55:33,731 INFO L87 Difference]: Start difference. First operand 1157 states and 1294 transitions. Second operand 105 states. [2018-04-12 01:55:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:55:35,670 INFO L93 Difference]: Finished difference Result 1417 states and 1584 transitions. [2018-04-12 01:55:35,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-04-12 01:55:35,671 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 527 [2018-04-12 01:55:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:55:35,672 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:55:35,673 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:55:35,675 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 929 SyntacticMatches, 21 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5475 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4319, Invalid=16561, Unknown=0, NotChecked=0, Total=20880 [2018-04-12 01:55:35,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:55:35,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:55:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:55:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1293 transitions. [2018-04-12 01:55:35,850 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1293 transitions. Word has length 527 [2018-04-12 01:55:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:55:35,850 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1293 transitions. [2018-04-12 01:55:35,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-04-12 01:55:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1293 transitions. [2018-04-12 01:55:35,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-04-12 01:55:35,853 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:55:35,853 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] [2018-04-12 01:55:35,853 INFO L408 AbstractCegarLoop]: === Iteration 33 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:55:35,854 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 [2018-04-12 01:55:35,860 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:55:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:55:35,930 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:55:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7206 backedges. 4283 proven. 1533 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2018-04-12 01:55:37,448 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:55:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7206 backedges. 3443 proven. 1533 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2018-04-12 01:55:39,402 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:55:39,402 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 110 [2018-04-12 01:55:39,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-04-12 01:55:39,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-04-12 01:55:39,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1857, Invalid=10133, Unknown=0, NotChecked=0, Total=11990 [2018-04-12 01:55:39,404 INFO L87 Difference]: Start difference. First operand 1157 states and 1293 transitions. Second operand 110 states. [2018-04-12 01:55:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:55:41,579 INFO L93 Difference]: Finished difference Result 1417 states and 1583 transitions. [2018-04-12 01:55:41,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-04-12 01:55:41,580 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 534 [2018-04-12 01:55:41,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:55:41,581 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:55:41,581 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:55:41,583 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 937 SyntacticMatches, 22 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6032 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4734, Invalid=18218, Unknown=0, NotChecked=0, Total=22952 [2018-04-12 01:55:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:55:41,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:55:41,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:55:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1292 transitions. [2018-04-12 01:55:41,744 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1292 transitions. Word has length 534 [2018-04-12 01:55:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:55:41,745 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1292 transitions. [2018-04-12 01:55:41,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-04-12 01:55:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1292 transitions. [2018-04-12 01:55:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-04-12 01:55:41,748 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:55:41,748 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] [2018-04-12 01:55:41,748 INFO L408 AbstractCegarLoop]: === Iteration 34 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:55:41,748 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 [2018-04-12 01:55:41,755 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:55:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:55:41,825 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:55:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 4308 proven. 1683 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2018-04-12 01:55:43,272 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:55:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 3516 proven. 1683 refuted. 0 times theorem prover too weak. 2157 trivial. 0 not checked. [2018-04-12 01:55:45,267 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:55:45,267 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 115 [2018-04-12 01:55:45,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-04-12 01:55:45,268 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-04-12 01:55:45,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2022, Invalid=11088, Unknown=0, NotChecked=0, Total=13110 [2018-04-12 01:55:45,269 INFO L87 Difference]: Start difference. First operand 1157 states and 1292 transitions. Second operand 115 states. [2018-04-12 01:55:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:55:47,625 INFO L93 Difference]: Finished difference Result 1417 states and 1582 transitions. [2018-04-12 01:55:47,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-04-12 01:55:47,626 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 541 [2018-04-12 01:55:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:55:47,627 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:55:47,627 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:55:47,629 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 945 SyntacticMatches, 23 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6616 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5168, Invalid=19954, Unknown=0, NotChecked=0, Total=25122 [2018-04-12 01:55:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:55:47,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:55:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:55:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1291 transitions. [2018-04-12 01:55:47,808 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1291 transitions. Word has length 541 [2018-04-12 01:55:47,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:55:47,808 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1291 transitions. [2018-04-12 01:55:47,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-04-12 01:55:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1291 transitions. [2018-04-12 01:55:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-04-12 01:55:47,812 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:55:47,813 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] [2018-04-12 01:55:47,813 INFO L408 AbstractCegarLoop]: === Iteration 35 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:55:47,813 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 [2018-04-12 01:55:47,818 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:55:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:55:47,890 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:55:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7513 backedges. 4317 proven. 1840 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2018-04-12 01:55:49,567 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:55:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7513 backedges. 3581 proven. 1840 refuted. 0 times theorem prover too weak. 2092 trivial. 0 not checked. [2018-04-12 01:55:51,736 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:55:51,737 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 120 [2018-04-12 01:55:51,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-04-12 01:55:51,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-04-12 01:55:51,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2194, Invalid=12086, Unknown=0, NotChecked=0, Total=14280 [2018-04-12 01:55:51,739 INFO L87 Difference]: Start difference. First operand 1157 states and 1291 transitions. Second operand 120 states. [2018-04-12 01:55:54,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:55:54,979 INFO L93 Difference]: Finished difference Result 1417 states and 1581 transitions. [2018-04-12 01:55:54,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-12 01:55:54,979 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 548 [2018-04-12 01:55:54,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:55:54,980 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:55:54,981 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:55:54,982 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1141 GetRequests, 953 SyntacticMatches, 24 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7227 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5621, Invalid=21769, Unknown=0, NotChecked=0, Total=27390 [2018-04-12 01:55:54,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:55:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:55:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:55:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1290 transitions. [2018-04-12 01:55:55,145 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1290 transitions. Word has length 548 [2018-04-12 01:55:55,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:55:55,145 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1290 transitions. [2018-04-12 01:55:55,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-04-12 01:55:55,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1290 transitions. [2018-04-12 01:55:55,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-04-12 01:55:55,148 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:55:55,148 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] [2018-04-12 01:55:55,148 INFO L408 AbstractCegarLoop]: === Iteration 36 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:55:55,148 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 [2018-04-12 01:55:55,154 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:55:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:55:55,232 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:55:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7677 backedges. 4310 proven. 2004 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2018-04-12 01:55:56,980 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:55:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7677 backedges. 3638 proven. 2004 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2018-04-12 01:55:59,373 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:55:59,374 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 125 [2018-04-12 01:55:59,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-04-12 01:55:59,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-04-12 01:55:59,375 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2373, Invalid=13127, Unknown=0, NotChecked=0, Total=15500 [2018-04-12 01:55:59,375 INFO L87 Difference]: Start difference. First operand 1157 states and 1290 transitions. Second operand 125 states. [2018-04-12 01:56:02,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:56:02,007 INFO L93 Difference]: Finished difference Result 1417 states and 1580 transitions. [2018-04-12 01:56:02,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-04-12 01:56:02,008 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 555 [2018-04-12 01:56:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:56:02,009 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:56:02,009 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:56:02,012 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1157 GetRequests, 961 SyntacticMatches, 25 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7865 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=6093, Invalid=23663, Unknown=0, NotChecked=0, Total=29756 [2018-04-12 01:56:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:56:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:56:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:56:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1289 transitions. [2018-04-12 01:56:02,196 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1289 transitions. Word has length 555 [2018-04-12 01:56:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:56:02,196 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1289 transitions. [2018-04-12 01:56:02,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-04-12 01:56:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1289 transitions. [2018-04-12 01:56:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-04-12 01:56:02,199 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:56:02,199 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] [2018-04-12 01:56:02,199 INFO L408 AbstractCegarLoop]: === Iteration 37 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:56:02,200 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 [2018-04-12 01:56:02,205 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:56:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:56:02,274 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:56:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7848 backedges. 4287 proven. 2175 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2018-04-12 01:56:04,134 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:56:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7848 backedges. 3687 proven. 2175 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2018-04-12 01:56:07,040 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:56:07,041 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 130 [2018-04-12 01:56:07,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-04-12 01:56:07,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-04-12 01:56:07,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2559, Invalid=14211, Unknown=0, NotChecked=0, Total=16770 [2018-04-12 01:56:07,042 INFO L87 Difference]: Start difference. First operand 1157 states and 1289 transitions. Second operand 130 states. [2018-04-12 01:56:10,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:56:10,069 INFO L93 Difference]: Finished difference Result 1417 states and 1579 transitions. [2018-04-12 01:56:10,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-04-12 01:56:10,069 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 562 [2018-04-12 01:56:10,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:56:10,070 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:56:10,071 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:56:10,073 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 969 SyntacticMatches, 26 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8530 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6584, Invalid=25636, Unknown=0, NotChecked=0, Total=32220 [2018-04-12 01:56:10,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:56:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:56:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:56:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1288 transitions. [2018-04-12 01:56:10,331 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1288 transitions. Word has length 562 [2018-04-12 01:56:10,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:56:10,331 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1288 transitions. [2018-04-12 01:56:10,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-04-12 01:56:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1288 transitions. [2018-04-12 01:56:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-04-12 01:56:10,337 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:56:10,338 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] [2018-04-12 01:56:10,338 INFO L408 AbstractCegarLoop]: === Iteration 38 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:56:10,338 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 [2018-04-12 01:56:10,351 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:56:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:56:10,419 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:56:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8026 backedges. 4248 proven. 2353 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2018-04-12 01:56:12,365 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:56:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8026 backedges. 3728 proven. 2353 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2018-04-12 01:56:15,333 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:56:15,333 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 135 [2018-04-12 01:56:15,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-04-12 01:56:15,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-04-12 01:56:15,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2752, Invalid=15338, Unknown=0, NotChecked=0, Total=18090 [2018-04-12 01:56:15,335 INFO L87 Difference]: Start difference. First operand 1157 states and 1288 transitions. Second operand 135 states. [2018-04-12 01:56:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:56:18,680 INFO L93 Difference]: Finished difference Result 1417 states and 1578 transitions. [2018-04-12 01:56:18,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-04-12 01:56:18,680 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 569 [2018-04-12 01:56:18,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:56:18,682 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:56:18,682 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:56:18,685 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 977 SyntacticMatches, 27 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9222 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=7094, Invalid=27688, Unknown=0, NotChecked=0, Total=34782 [2018-04-12 01:56:18,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:56:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:56:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:56:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1287 transitions. [2018-04-12 01:56:18,871 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1287 transitions. Word has length 569 [2018-04-12 01:56:18,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:56:18,871 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1287 transitions. [2018-04-12 01:56:18,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-04-12 01:56:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1287 transitions. [2018-04-12 01:56:18,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-04-12 01:56:18,875 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:56:18,875 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] [2018-04-12 01:56:18,875 INFO L408 AbstractCegarLoop]: === Iteration 39 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:56:18,875 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 [2018-04-12 01:56:18,883 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:56:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:56:18,967 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:56:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 4193 proven. 2538 refuted. 0 times theorem prover too weak. 1480 trivial. 0 not checked. [2018-04-12 01:56:21,069 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:56:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 3761 proven. 2538 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. [2018-04-12 01:56:24,171 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:56:24,171 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 140 [2018-04-12 01:56:24,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-04-12 01:56:24,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-04-12 01:56:24,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2952, Invalid=16508, Unknown=0, NotChecked=0, Total=19460 [2018-04-12 01:56:24,174 INFO L87 Difference]: Start difference. First operand 1157 states and 1287 transitions. Second operand 140 states. [2018-04-12 01:56:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:56:27,417 INFO L93 Difference]: Finished difference Result 1417 states and 1577 transitions. [2018-04-12 01:56:27,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-04-12 01:56:27,417 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 576 [2018-04-12 01:56:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:56:27,418 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:56:27,418 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:56:27,421 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 985 SyntacticMatches, 28 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9941 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=7623, Invalid=29819, Unknown=0, NotChecked=0, Total=37442 [2018-04-12 01:56:27,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:56:27,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:56:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:56:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1286 transitions. [2018-04-12 01:56:27,610 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1286 transitions. Word has length 576 [2018-04-12 01:56:27,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:56:27,610 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1286 transitions. [2018-04-12 01:56:27,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-04-12 01:56:27,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1286 transitions. [2018-04-12 01:56:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-04-12 01:56:27,614 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:56:27,615 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] [2018-04-12 01:56:27,615 INFO L408 AbstractCegarLoop]: === Iteration 40 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:56:27,615 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 [2018-04-12 01:56:27,621 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:56:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:56:27,694 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:56:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8403 backedges. 4122 proven. 2730 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2018-04-12 01:56:29,920 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:56:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8403 backedges. 3786 proven. 2730 refuted. 0 times theorem prover too weak. 1887 trivial. 0 not checked. [2018-04-12 01:56:32,995 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:56:32,996 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 145 [2018-04-12 01:56:32,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-04-12 01:56:32,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-04-12 01:56:32,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3159, Invalid=17721, Unknown=0, NotChecked=0, Total=20880 [2018-04-12 01:56:32,997 INFO L87 Difference]: Start difference. First operand 1157 states and 1286 transitions. Second operand 145 states. [2018-04-12 01:56:36,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:56:36,772 INFO L93 Difference]: Finished difference Result 1417 states and 1576 transitions. [2018-04-12 01:56:36,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-04-12 01:56:36,772 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 583 [2018-04-12 01:56:36,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:56:36,774 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:56:36,774 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:56:36,777 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 993 SyntacticMatches, 29 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10687 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=8171, Invalid=32029, Unknown=0, NotChecked=0, Total=40200 [2018-04-12 01:56:36,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:56:36,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:56:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:56:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1285 transitions. [2018-04-12 01:56:36,943 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1285 transitions. Word has length 583 [2018-04-12 01:56:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:56:36,944 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1285 transitions. [2018-04-12 01:56:36,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-04-12 01:56:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1285 transitions. [2018-04-12 01:56:36,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2018-04-12 01:56:36,946 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:56:36,947 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] [2018-04-12 01:56:36,957 INFO L408 AbstractCegarLoop]: === Iteration 41 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:56:36,958 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 [2018-04-12 01:56:36,964 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:56:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:56:37,041 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:56:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8602 backedges. 4035 proven. 2929 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2018-04-12 01:56:39,424 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:56:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8602 backedges. 3803 proven. 2929 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2018-04-12 01:56:42,768 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:56:42,768 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 150 [2018-04-12 01:56:42,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-04-12 01:56:42,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-04-12 01:56:42,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3373, Invalid=18977, Unknown=0, NotChecked=0, Total=22350 [2018-04-12 01:56:42,770 INFO L87 Difference]: Start difference. First operand 1157 states and 1285 transitions. Second operand 150 states. [2018-04-12 01:56:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:56:46,125 INFO L93 Difference]: Finished difference Result 1417 states and 1575 transitions. [2018-04-12 01:56:46,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-04-12 01:56:46,126 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 590 [2018-04-12 01:56:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:56:46,127 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:56:46,127 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:56:46,129 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1001 SyntacticMatches, 30 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11460 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=8738, Invalid=34318, Unknown=0, NotChecked=0, Total=43056 [2018-04-12 01:56:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:56:46,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:56:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:56:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1284 transitions. [2018-04-12 01:56:46,362 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1284 transitions. Word has length 590 [2018-04-12 01:56:46,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:56:46,363 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1284 transitions. [2018-04-12 01:56:46,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-04-12 01:56:46,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1284 transitions. [2018-04-12 01:56:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-04-12 01:56:46,366 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:56:46,366 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] [2018-04-12 01:56:46,366 INFO L408 AbstractCegarLoop]: === Iteration 42 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:56:46,367 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 [2018-04-12 01:56:46,377 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:56:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:56:46,456 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:56:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8808 backedges. 3932 proven. 3135 refuted. 0 times theorem prover too weak. 1741 trivial. 0 not checked. [2018-04-12 01:56:48,873 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:56:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8808 backedges. 3812 proven. 3135 refuted. 0 times theorem prover too weak. 1861 trivial. 0 not checked. [2018-04-12 01:56:52,459 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:56:52,459 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 155 [2018-04-12 01:56:52,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-04-12 01:56:52,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-04-12 01:56:52,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3594, Invalid=20276, Unknown=0, NotChecked=0, Total=23870 [2018-04-12 01:56:52,461 INFO L87 Difference]: Start difference. First operand 1157 states and 1284 transitions. Second operand 155 states. [2018-04-12 01:56:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:56:56,136 INFO L93 Difference]: Finished difference Result 1417 states and 1574 transitions. [2018-04-12 01:56:56,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-04-12 01:56:56,136 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 597 [2018-04-12 01:56:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:56:56,137 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 01:56:56,137 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:56:56,139 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1253 GetRequests, 1009 SyntacticMatches, 31 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12260 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=9324, Invalid=36686, Unknown=0, NotChecked=0, Total=46010 [2018-04-12 01:56:56,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:56:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:56:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:56:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1283 transitions. [2018-04-12 01:56:56,283 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1283 transitions. Word has length 597 [2018-04-12 01:56:56,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:56:56,284 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1283 transitions. [2018-04-12 01:56:56,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-04-12 01:56:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1283 transitions. [2018-04-12 01:56:56,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2018-04-12 01:56:56,286 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:56:56,287 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] [2018-04-12 01:56:56,287 INFO L408 AbstractCegarLoop]: === Iteration 43 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:56:56,287 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 [2018-04-12 01:56:56,295 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:56:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:56:56,373 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:56:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9021 backedges. 3813 proven. 3348 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2018-04-12 01:56:58,787 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:57:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9021 backedges. 3813 proven. 3348 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2018-04-12 01:57:02,163 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:57:02,163 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 160 [2018-04-12 01:57:02,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-04-12 01:57:02,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-04-12 01:57:02,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3822, Invalid=21618, Unknown=0, NotChecked=0, Total=25440 [2018-04-12 01:57:02,166 INFO L87 Difference]: Start difference. First operand 1157 states and 1283 transitions. Second operand 160 states. [2018-04-12 01:57:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 01:57:06,217 INFO L93 Difference]: Finished difference Result 1423 states and 1580 transitions. [2018-04-12 01:57:06,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-04-12 01:57:06,217 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 604 [2018-04-12 01:57:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 01:57:06,218 INFO L225 Difference]: With dead ends: 1423 [2018-04-12 01:57:06,218 INFO L226 Difference]: Without dead ends: 1157 [2018-04-12 01:57:06,222 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1017 SyntacticMatches, 32 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13087 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=9929, Invalid=39133, Unknown=0, NotChecked=0, Total=49062 [2018-04-12 01:57:06,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-12 01:57:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2018-04-12 01:57:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-04-12 01:57:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1282 transitions. [2018-04-12 01:57:06,369 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1282 transitions. Word has length 604 [2018-04-12 01:57:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 01:57:06,369 INFO L459 AbstractCegarLoop]: Abstraction has 1157 states and 1282 transitions. [2018-04-12 01:57:06,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-04-12 01:57:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1282 transitions. [2018-04-12 01:57:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-04-12 01:57:06,372 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 01:57:06,373 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] [2018-04-12 01:57:06,373 INFO L408 AbstractCegarLoop]: === Iteration 44 === [mainErr3AssertViolationARRAY_INDEX, mainErr4AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2AssertViolationARRAY_INDEX, mainErr0AssertViolationARRAY_INDEX]=== [2018-04-12 01:57:06,373 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 [2018-04-12 01:57:06,379 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-12 01:57:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 01:57:06,465 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 01:57:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9241 backedges. 0 proven. 3813 refuted. 0 times theorem prover too weak. 5428 trivial. 0 not checked. [2018-04-12 01:57:08,023 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-12 01:57:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9241 backedges. 0 proven. 3813 refuted. 0 times theorem prover too weak. 5428 trivial. 0 not checked. [2018-04-12 01:57:12,158 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 01:57:12,158 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-04-12 01:57:12,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-12 01:57:12,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-12 01:57:12,161 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2238, Invalid=14018, Unknown=0, NotChecked=0, Total=16256 [2018-04-12 01:57:12,161 INFO L87 Difference]: Start difference. First operand 1157 states and 1282 transitions. Second operand 128 states. [2018-04-12 01:57:17,269 WARN L151 SmtUtils]: Spent 309ms on a formula simplification. DAG size of input: 252 DAG size of output 12 [2018-04-12 01:57:17,978 WARN L151 SmtUtils]: Spent 259ms on a formula simplification. DAG size of input: 247 DAG size of output 11 [2018-04-12 01:57:18,471 WARN L151 SmtUtils]: Spent 259ms on a formula simplification. DAG size of input: 244 DAG size of output 12 [2018-04-12 01:57:19,169 WARN L151 SmtUtils]: Spent 258ms on a formula simplification. DAG size of input: 239 DAG size of output 11 [2018-04-12 01:57:19,666 WARN L151 SmtUtils]: Spent 241ms on a formula simplification. DAG size of input: 236 DAG size of output 12 [2018-04-12 01:57:20,346 WARN L151 SmtUtils]: Spent 234ms on a formula simplification. DAG size of input: 231 DAG size of output 11 [2018-04-12 01:57:20,815 WARN L151 SmtUtils]: Spent 236ms on a formula simplification. DAG size of input: 228 DAG size of output 12 Received shutdown request... [2018-04-12 01:57:21,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-04-12 01:57:21,079 WARN L519 AbstractCegarLoop]: Verification canceled [2018-04-12 01:57:21,082 WARN L197 ceAbstractionStarter]: Timeout [2018-04-12 01:57:21,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.04 01:57:21 BasicIcfg [2018-04-12 01:57:21,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-12 01:57:21,083 INFO L168 Benchmark]: Toolchain (without parser) took 238626.10 ms. Allocated memory was 304.6 MB in the beginning and 1.2 GB in the end (delta: 912.3 MB). Free memory was 247.8 MB in the beginning and 337.4 MB in the end (delta: -89.5 MB). Peak memory consumption was 822.7 MB. Max. memory is 5.3 GB. [2018-04-12 01:57:21,085 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 304.6 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-12 01:57:21,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.19 ms. Allocated memory is still 304.6 MB. Free memory was 247.8 MB in the beginning and 238.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. [2018-04-12 01:57:21,085 INFO L168 Benchmark]: Boogie Preprocessor took 26.88 ms. Allocated memory is still 304.6 MB. Free memory was 238.8 MB in the beginning and 236.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-04-12 01:57:21,085 INFO L168 Benchmark]: RCFGBuilder took 352.16 ms. Allocated memory was 304.6 MB in the beginning and 431.0 MB in the end (delta: 126.4 MB). Free memory was 236.8 MB in the beginning and 401.8 MB in the end (delta: -164.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. [2018-04-12 01:57:21,086 INFO L168 Benchmark]: IcfgTransformer took 18.34 ms. Allocated memory is still 431.0 MB. Free memory was 401.8 MB in the beginning and 400.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 5.3 GB. [2018-04-12 01:57:21,086 INFO L168 Benchmark]: TraceAbstraction took 237982.34 ms. Allocated memory was 431.0 MB in the beginning and 1.2 GB in the end (delta: 785.9 MB). Free memory was 400.8 MB in the beginning and 337.4 MB in the end (delta: 63.4 MB). Peak memory consumption was 849.3 MB. Max. memory is 5.3 GB. [2018-04-12 01:57:21,088 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 304.6 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 241.19 ms. Allocated memory is still 304.6 MB. Free memory was 247.8 MB in the beginning and 238.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.88 ms. Allocated memory is still 304.6 MB. Free memory was 238.8 MB in the beginning and 236.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 352.16 ms. Allocated memory was 304.6 MB in the beginning and 431.0 MB in the end (delta: 126.4 MB). Free memory was 236.8 MB in the beginning and 401.8 MB in the end (delta: -164.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. * IcfgTransformer took 18.34 ms. Allocated memory is still 431.0 MB. Free memory was 401.8 MB in the beginning and 400.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 237982.34 ms. Allocated memory was 431.0 MB in the beginning and 1.2 GB in the end (delta: 785.9 MB). Free memory was 400.8 MB in the beginning and 337.4 MB in the end (delta: 63.4 MB). Peak memory consumption was 849.3 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 (1157states) and interpolant automaton (currently 108 states, 128 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 202 known predicates. - 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 (1157states) and interpolant automaton (currently 108 states, 128 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 202 known predicates. - 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 (1157states) and interpolant automaton (currently 108 states, 128 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 202 known predicates. - 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 (1157states) and interpolant automaton (currently 108 states, 128 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 202 known predicates. - 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 (1157states) and interpolant automaton (currently 108 states, 128 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 202 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 5 error locations. TIMEOUT Result, 237.9s OverallTime, 44 OverallIterations, 63 TraceHistogramMax, 126.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6045 SDtfs, 43431 SDslu, 126299 SDs, 0 SdLazy, 81022 SolverSat, 7629 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28935 GetRequests, 24044 SyntacticMatches, 528 SemanticMatches, 4362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153210 ImplicationChecksByTransitivity, 161.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1157occurred in iteration=27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.7s AutomataMinimizationTime, 43 MinimizatonAttempts, 37267 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 102.8s InterpolantComputationTime, 13836 NumberOfCodeBlocks, 13836 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 27584 ConstructedInterpolants, 0 QuantifiedInterpolants, 43291988 SizeOfPredicates, 1170 NumberOfNonLiveVariables, 19146 ConjunctsInSsa, 2076 ConjunctsInUnsatCore, 88 InterpolantComputations, 6 PerfectInterpolantSequences, 219030/335810 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-0-2018-04-12_01-57-21-099.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-0-2018-04-12_01-57-21-099.csv Completed graceful shutdown