java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8168ed2-m [2018-04-11 22:15:34,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 22:15:34,730 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 22:15:34,744 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-11 22:15:34,744 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-11 22:15:34,745 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-11 22:15:34,746 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-11 22:15:34,747 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-11 22:15:34,749 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-11 22:15:34,750 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-11 22:15:34,751 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-11 22:15:34,751 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-11 22:15:34,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-11 22:15:34,754 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-11 22:15:34,754 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-11 22:15:34,757 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-11 22:15:34,759 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-11 22:15:34,760 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-11 22:15:34,761 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-11 22:15:34,763 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-11 22:15:34,765 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-11 22:15:34,765 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-11 22:15:34,765 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-11 22:15:34,766 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-11 22:15:34,767 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-11 22:15:34,768 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-11 22:15:34,769 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-11 22:15:34,769 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-11 22:15:34,770 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-11 22:15:34,770 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-11 22:15:34,771 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-11 22:15:34,771 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 [2018-04-11 22:15:34,794 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 22:15:34,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 22:15:34,795 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-11 22:15:34,795 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-11 22:15:34,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-11 22:15:34,795 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-11 22:15:34,796 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-11 22:15:34,796 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-11 22:15:34,796 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-11 22:15:34,796 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-11 22:15:34,796 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-11 22:15:34,796 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-11 22:15:34,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 22:15:34,797 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 22:15:34,797 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 22:15:34,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 22:15:34,797 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 22:15:34,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 22:15:34,798 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 22:15:34,798 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-11 22:15:34,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 22:15:34,798 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 22:15:34,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 22:15:34,799 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-11 22:15:34,799 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-11 22:15:34,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 22:15:34,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 22:15:34,799 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 22:15:34,799 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-11 22:15:34,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-11 22:15:34,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-11 22:15:34,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-11 22:15:34,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:15:34,800 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-11 22:15:34,801 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-11 22:15:34,801 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-11 22:15:34,801 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-11 22:15:34,802 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-11 22:15:34,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 22:15:34,847 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 22:15:34,851 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 22:15:34,853 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 22:15:34,853 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 22:15:34,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-04-11 22:15:35,165 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG1fd869619 [2018-04-11 22:15:35,294 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 22:15:35,295 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 22:15:35,295 INFO L168 CDTParser]: Scanning ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-04-11 22:15:35,296 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 22:15:35,296 INFO L215 ultiparseSymbolTable]: [2018-04-11 22:15:35,296 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 22:15:35,297 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__foo ('foo') in ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-04-11 22:15:35,297 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-04-11 22:15:35,297 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 22:15:35,297 INFO L233 ultiparseSymbolTable]: [2018-04-11 22:15:35,312 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG1fd869619 [2018-04-11 22:15:35,316 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 22:15:35,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 22:15:35,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 22:15:35,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 22:15:35,325 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 22:15:35,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 10:15:35" (1/1) ... [2018-04-11 22:15:35,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5116ff57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35, skipping insertion in model container [2018-04-11 22:15:35,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 10:15:35" (1/1) ... [2018-04-11 22:15:35,342 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 22:15:35,354 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 22:15:35,476 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 22:15:35,501 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 22:15:35,506 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-11 22:15:35,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35 WrapperNode [2018-04-11 22:15:35,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 22:15:35,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 22:15:35,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 22:15:35,514 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 22:15:35,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35" (1/1) ... [2018-04-11 22:15:35,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35" (1/1) ... [2018-04-11 22:15:35,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35" (1/1) ... [2018-04-11 22:15:35,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35" (1/1) ... [2018-04-11 22:15:35,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35" (1/1) ... [2018-04-11 22:15:35,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35" (1/1) ... [2018-04-11 22:15:35,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35" (1/1) ... [2018-04-11 22:15:35,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 22:15:35,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 22:15:35,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 22:15:35,545 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 22:15:35,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35" (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 [2018-04-11 22:15:35,601 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 22:15:35,602 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 22:15:35,602 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__foo [2018-04-11 22:15:35,602 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 22:15:35,602 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__foo [2018-04-11 22:15:35,602 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 22:15:35,602 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 22:15:35,602 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-11 22:15:35,602 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 22:15:35,602 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 22:15:35,603 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 22:15:35,603 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 22:15:35,603 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 22:15:35,883 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 22:15:35,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 10:15:35 BoogieIcfgContainer [2018-04-11 22:15:35,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 22:15:35,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 22:15:35,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 22:15:35,888 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 22:15:35,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 10:15:35" (1/3) ... [2018-04-11 22:15:35,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a872dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 10:15:35, skipping insertion in model container [2018-04-11 22:15:35,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:15:35" (2/3) ... [2018-04-11 22:15:35,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a872dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 10:15:35, skipping insertion in model container [2018-04-11 22:15:35,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 10:15:35" (3/3) ... [2018-04-11 22:15:35,892 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-04-11 22:15:35,903 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-11 22:15:35,911 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-04-11 22:15:35,963 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 22:15:35,964 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 22:15:35,964 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-11 22:15:35,964 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-11 22:15:35,965 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-11 22:15:35,965 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 22:15:35,965 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 22:15:35,965 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 22:15:35,965 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 22:15:35,966 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 22:15:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-04-11 22:15:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-11 22:15:35,985 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:35,986 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:35,986 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:35,990 INFO L82 PathProgramCache]: Analyzing trace with hash 924065095, 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 [2018-04-11 22:15:36,004 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:36,041 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:36,089 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:36,124 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:15:36,124 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-11 22:15:36,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 22:15:36,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 22:15:36,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-11 22:15:36,138 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2018-04-11 22:15:36,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:36,249 INFO L93 Difference]: Finished difference Result 136 states and 158 transitions. [2018-04-11 22:15:36,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-11 22:15:36,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-04-11 22:15:36,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:36,262 INFO L225 Difference]: With dead ends: 136 [2018-04-11 22:15:36,262 INFO L226 Difference]: Without dead ends: 80 [2018-04-11 22:15:36,266 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-11 22:15:36,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-04-11 22:15:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 64. [2018-04-11 22:15:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-04-11 22:15:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2018-04-11 22:15:36,308 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 13 [2018-04-11 22:15:36,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:36,309 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2018-04-11 22:15:36,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 22:15:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2018-04-11 22:15:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-04-11 22:15:36,310 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:36,310 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:36,310 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:36,311 INFO L82 PathProgramCache]: Analyzing trace with hash 591861313, 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 [2018-04-11 22:15:36,324 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:36,347 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:36,356 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:36,420 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:15:36,421 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-11 22:15:36,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 22:15:36,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 22:15:36,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-11 22:15:36,423 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 4 states. [2018-04-11 22:15:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:36,459 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2018-04-11 22:15:36,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-11 22:15:36,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-04-11 22:15:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:36,463 INFO L225 Difference]: With dead ends: 78 [2018-04-11 22:15:36,463 INFO L226 Difference]: Without dead ends: 77 [2018-04-11 22:15:36,464 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-11 22:15:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-11 22:15:36,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2018-04-11 22:15:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-04-11 22:15:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-04-11 22:15:36,473 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 22 [2018-04-11 22:15:36,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:36,474 INFO L459 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-04-11 22:15:36,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 22:15:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-04-11 22:15:36,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-11 22:15:36,475 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:36,475 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:36,475 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:36,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1167831631, 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 [2018-04-11 22:15:36,490 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:36,509 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:36,539 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:15:36,541 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:15:36,549 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:15:36,550 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-11 22:15:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:36,577 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:36,620 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:15:36,620 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2018-04-11 22:15:36,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 22:15:36,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 22:15:36,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-11 22:15:36,622 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2018-04-11 22:15:36,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:36,716 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-04-11 22:15:36,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 22:15:36,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-04-11 22:15:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:36,718 INFO L225 Difference]: With dead ends: 67 [2018-04-11 22:15:36,718 INFO L226 Difference]: Without dead ends: 66 [2018-04-11 22:15:36,719 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-04-11 22:15:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-04-11 22:15:36,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-04-11 22:15:36,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-04-11 22:15:36,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2018-04-11 22:15:36,727 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 23 [2018-04-11 22:15:36,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:36,728 INFO L459 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2018-04-11 22:15:36,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 22:15:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2018-04-11 22:15:36,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-11 22:15:36,729 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:36,729 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:36,729 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:36,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1167831632, 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 [2018-04-11 22:15:36,739 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:36,758 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:36,779 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:15:36,779 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:15:36,796 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:15:36,796 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:15:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:36,834 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:36,932 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:15:36,932 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2018-04-11 22:15:36,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-11 22:15:36,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-11 22:15:36,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-04-11 22:15:36,933 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 10 states. [2018-04-11 22:15:37,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:37,062 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-04-11 22:15:37,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 22:15:37,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2018-04-11 22:15:37,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:37,064 INFO L225 Difference]: With dead ends: 75 [2018-04-11 22:15:37,064 INFO L226 Difference]: Without dead ends: 74 [2018-04-11 22:15:37,065 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-04-11 22:15:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-04-11 22:15:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2018-04-11 22:15:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-04-11 22:15:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-04-11 22:15:37,072 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 23 [2018-04-11 22:15:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:37,073 INFO L459 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-04-11 22:15:37,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-11 22:15:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-04-11 22:15:37,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-11 22:15:37,073 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:37,074 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, 1, 1, 1, 1] [2018-04-11 22:15:37,074 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:37,074 INFO L82 PathProgramCache]: Analyzing trace with hash -572236607, 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 [2018-04-11 22:15:37,102 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:37,119 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:37,214 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:37,318 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:37,318 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-11 22:15:37,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:15:37,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:15:37,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:15:37,319 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 8 states. [2018-04-11 22:15:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:37,405 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2018-04-11 22:15:37,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 22:15:37,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-04-11 22:15:37,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:37,407 INFO L225 Difference]: With dead ends: 101 [2018-04-11 22:15:37,407 INFO L226 Difference]: Without dead ends: 100 [2018-04-11 22:15:37,407 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:15:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-04-11 22:15:37,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 84. [2018-04-11 22:15:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-04-11 22:15:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2018-04-11 22:15:37,414 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 31 [2018-04-11 22:15:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:37,415 INFO L459 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2018-04-11 22:15:37,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:15:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2018-04-11 22:15:37,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-11 22:15:37,416 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:37,416 INFO L355 BasicCegarLoop]: trace histogram [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] [2018-04-11 22:15:37,416 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:37,416 INFO L82 PathProgramCache]: Analyzing trace with hash -559465520, now seen corresponding path program 1 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 [2018-04-11 22:15:37,423 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:37,437 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:37,441 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:15:37,441 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:15:37,448 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:15:37,449 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:15:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:37,515 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:37,625 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:37,625 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-04-11 22:15:37,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-11 22:15:37,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-11 22:15:37,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-04-11 22:15:37,626 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 14 states. [2018-04-11 22:15:37,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:37,928 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-04-11 22:15:37,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-11 22:15:37,929 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2018-04-11 22:15:37,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:37,930 INFO L225 Difference]: With dead ends: 95 [2018-04-11 22:15:37,930 INFO L226 Difference]: Without dead ends: 94 [2018-04-11 22:15:37,931 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2018-04-11 22:15:37,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-04-11 22:15:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2018-04-11 22:15:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-04-11 22:15:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2018-04-11 22:15:37,939 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 32 [2018-04-11 22:15:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:37,940 INFO L459 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2018-04-11 22:15:37,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-11 22:15:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2018-04-11 22:15:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-04-11 22:15:37,941 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:37,941 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, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:37,941 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:37,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1735417043, now seen corresponding path program 1 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 [2018-04-11 22:15:37,948 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:37,962 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:37,995 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:38,066 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:15:38,067 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2018-04-11 22:15:38,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-11 22:15:38,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-11 22:15:38,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-04-11 22:15:38,068 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 9 states. [2018-04-11 22:15:38,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:38,154 INFO L93 Difference]: Finished difference Result 174 states and 188 transitions. [2018-04-11 22:15:38,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 22:15:38,154 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-04-11 22:15:38,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:38,155 INFO L225 Difference]: With dead ends: 174 [2018-04-11 22:15:38,155 INFO L226 Difference]: Without dead ends: 102 [2018-04-11 22:15:38,156 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-04-11 22:15:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-04-11 22:15:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 89. [2018-04-11 22:15:38,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-04-11 22:15:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2018-04-11 22:15:38,166 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 33 [2018-04-11 22:15:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:38,167 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2018-04-11 22:15:38,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-11 22:15:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2018-04-11 22:15:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-04-11 22:15:38,170 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:38,170 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:38,170 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:38,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1153304147, now seen corresponding path program 1 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 [2018-04-11 22:15:38,177 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:38,200 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:38,239 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:15:38,351 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:38,351 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-04-11 22:15:38,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 22:15:38,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 22:15:38,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:15:38,352 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 12 states. [2018-04-11 22:15:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:38,488 INFO L93 Difference]: Finished difference Result 180 states and 194 transitions. [2018-04-11 22:15:38,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 22:15:38,489 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-04-11 22:15:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:38,490 INFO L225 Difference]: With dead ends: 180 [2018-04-11 22:15:38,490 INFO L226 Difference]: Without dead ends: 105 [2018-04-11 22:15:38,490 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2018-04-11 22:15:38,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-04-11 22:15:38,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 89. [2018-04-11 22:15:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-04-11 22:15:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2018-04-11 22:15:38,498 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 42 [2018-04-11 22:15:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:38,498 INFO L459 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2018-04-11 22:15:38,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 22:15:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2018-04-11 22:15:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-04-11 22:15:38,499 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:38,499 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:38,499 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:38,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1764291391, now seen corresponding path program 2 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 [2018-04-11 22:15:38,508 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:38,525 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-04-11 22:15:38,599 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-04-11 22:15:38,675 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:15:38,675 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 15 [2018-04-11 22:15:38,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-11 22:15:38,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-11 22:15:38,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-04-11 22:15:38,676 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 15 states. [2018-04-11 22:15:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:38,905 INFO L93 Difference]: Finished difference Result 211 states and 225 transitions. [2018-04-11 22:15:38,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-04-11 22:15:38,905 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2018-04-11 22:15:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:38,906 INFO L225 Difference]: With dead ends: 211 [2018-04-11 22:15:38,906 INFO L226 Difference]: Without dead ends: 130 [2018-04-11 22:15:38,907 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2018-04-11 22:15:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-04-11 22:15:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 114. [2018-04-11 22:15:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-04-11 22:15:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2018-04-11 22:15:38,917 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 49 [2018-04-11 22:15:38,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:38,918 INFO L459 AbstractCegarLoop]: Abstraction has 114 states and 120 transitions. [2018-04-11 22:15:38,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-11 22:15:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 120 transitions. [2018-04-11 22:15:38,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-04-11 22:15:38,919 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:38,920 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:38,920 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:38,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1367929645, now seen corresponding path program 2 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 [2018-04-11 22:15:38,932 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:38,954 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-11 22:15:39,020 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-11 22:15:39,104 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:15:39,104 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-11 22:15:39,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-11 22:15:39,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-11 22:15:39,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-04-11 22:15:39,111 INFO L87 Difference]: Start difference. First operand 114 states and 120 transitions. Second operand 9 states. [2018-04-11 22:15:39,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:39,181 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2018-04-11 22:15:39,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-11 22:15:39,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2018-04-11 22:15:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:39,184 INFO L225 Difference]: With dead ends: 129 [2018-04-11 22:15:39,184 INFO L226 Difference]: Without dead ends: 128 [2018-04-11 22:15:39,184 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:15:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-04-11 22:15:39,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 113. [2018-04-11 22:15:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-04-11 22:15:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2018-04-11 22:15:39,192 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 51 [2018-04-11 22:15:39,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:39,192 INFO L459 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2018-04-11 22:15:39,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-11 22:15:39,192 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2018-04-11 22:15:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-04-11 22:15:39,193 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:39,193 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:39,194 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:39,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1333640360, now seen corresponding path program 1 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 [2018-04-11 22:15:39,201 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:39,216 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-11 22:15:39,237 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-11 22:15:39,276 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:39,277 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-04-11 22:15:39,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:15:39,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:15:39,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:15:39,278 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 8 states. [2018-04-11 22:15:39,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:39,349 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2018-04-11 22:15:39,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 22:15:39,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2018-04-11 22:15:39,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:39,350 INFO L225 Difference]: With dead ends: 161 [2018-04-11 22:15:39,350 INFO L226 Difference]: Without dead ends: 141 [2018-04-11 22:15:39,351 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:15:39,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-04-11 22:15:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2018-04-11 22:15:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-04-11 22:15:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 138 transitions. [2018-04-11 22:15:39,359 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 138 transitions. Word has length 59 [2018-04-11 22:15:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:39,359 INFO L459 AbstractCegarLoop]: Abstraction has 131 states and 138 transitions. [2018-04-11 22:15:39,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:15:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 138 transitions. [2018-04-11 22:15:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-04-11 22:15:39,361 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:39,361 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 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] [2018-04-11 22:15:39,361 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:39,361 INFO L82 PathProgramCache]: Analyzing trace with hash -210360755, now seen corresponding path program 1 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 [2018-04-11 22:15:39,372 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:39,395 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-11 22:15:39,501 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-04-11 22:15:39,649 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:39,649 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2018-04-11 22:15:39,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-04-11 22:15:39,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-04-11 22:15:39,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2018-04-11 22:15:39,650 INFO L87 Difference]: Start difference. First operand 131 states and 138 transitions. Second operand 21 states. [2018-04-11 22:15:39,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:39,963 INFO L93 Difference]: Finished difference Result 264 states and 281 transitions. [2018-04-11 22:15:39,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-11 22:15:39,964 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 87 [2018-04-11 22:15:39,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:39,966 INFO L225 Difference]: With dead ends: 264 [2018-04-11 22:15:39,966 INFO L226 Difference]: Without dead ends: 185 [2018-04-11 22:15:39,967 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 149 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2018-04-11 22:15:39,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-04-11 22:15:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2018-04-11 22:15:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-04-11 22:15:39,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 177 transitions. [2018-04-11 22:15:39,978 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 177 transitions. Word has length 87 [2018-04-11 22:15:39,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:39,978 INFO L459 AbstractCegarLoop]: Abstraction has 168 states and 177 transitions. [2018-04-11 22:15:39,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-04-11 22:15:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 177 transitions. [2018-04-11 22:15:39,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-04-11 22:15:39,980 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:39,980 INFO L355 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-04-11 22:15:39,980 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:39,981 INFO L82 PathProgramCache]: Analyzing trace with hash -203591568, now seen corresponding path program 2 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 [2018-04-11 22:15:39,990 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:40,017 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-04-11 22:15:40,061 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-04-11 22:15:40,194 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-11 22:15:40,194 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2018-04-11 22:15:40,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-04-11 22:15:40,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-04-11 22:15:40,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-04-11 22:15:40,195 INFO L87 Difference]: Start difference. First operand 168 states and 177 transitions. Second operand 13 states. [2018-04-11 22:15:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:40,337 INFO L93 Difference]: Finished difference Result 263 states and 277 transitions. [2018-04-11 22:15:40,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-11 22:15:40,337 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2018-04-11 22:15:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:40,339 INFO L225 Difference]: With dead ends: 263 [2018-04-11 22:15:40,339 INFO L226 Difference]: Without dead ends: 178 [2018-04-11 22:15:40,340 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 185 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-04-11 22:15:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-04-11 22:15:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 168. [2018-04-11 22:15:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-04-11 22:15:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 175 transitions. [2018-04-11 22:15:40,350 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 175 transitions. Word has length 99 [2018-04-11 22:15:40,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:40,350 INFO L459 AbstractCegarLoop]: Abstraction has 168 states and 175 transitions. [2018-04-11 22:15:40,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-04-11 22:15:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 175 transitions. [2018-04-11 22:15:40,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-04-11 22:15:40,352 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:40,352 INFO L355 BasicCegarLoop]: trace histogram [9, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:40,352 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:40,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1716502977, now seen corresponding path program 2 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 [2018-04-11 22:15:40,362 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:40,391 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:40,487 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-04-11 22:15:40,487 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-04-11 22:15:40,607 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:40,607 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-04-11 22:15:40,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 22:15:40,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 22:15:40,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:15:40,608 INFO L87 Difference]: Start difference. First operand 168 states and 175 transitions. Second operand 16 states. [2018-04-11 22:15:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:40,847 INFO L93 Difference]: Finished difference Result 263 states and 274 transitions. [2018-04-11 22:15:40,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-04-11 22:15:40,847 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 116 [2018-04-11 22:15:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:40,848 INFO L225 Difference]: With dead ends: 263 [2018-04-11 22:15:40,848 INFO L226 Difference]: Without dead ends: 178 [2018-04-11 22:15:40,849 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 215 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2018-04-11 22:15:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-04-11 22:15:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 168. [2018-04-11 22:15:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-04-11 22:15:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 173 transitions. [2018-04-11 22:15:40,858 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 173 transitions. Word has length 116 [2018-04-11 22:15:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:40,858 INFO L459 AbstractCegarLoop]: Abstraction has 168 states and 173 transitions. [2018-04-11 22:15:40,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 22:15:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 173 transitions. [2018-04-11 22:15:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-04-11 22:15:40,860 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:40,861 INFO L355 BasicCegarLoop]: trace histogram [10, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:40,861 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:40,861 INFO L82 PathProgramCache]: Analyzing trace with hash -444483879, now seen corresponding path program 3 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 [2018-04-11 22:15:40,871 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:40,902 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 216 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-04-11 22:15:41,035 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 216 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-04-11 22:15:41,178 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:41,178 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2018-04-11 22:15:41,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-11 22:15:41,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-11 22:15:41,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-04-11 22:15:41,179 INFO L87 Difference]: Start difference. First operand 168 states and 173 transitions. Second operand 18 states. [2018-04-11 22:15:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:41,407 INFO L93 Difference]: Finished difference Result 267 states and 275 transitions. [2018-04-11 22:15:41,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-11 22:15:41,407 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 125 [2018-04-11 22:15:41,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:41,408 INFO L225 Difference]: With dead ends: 267 [2018-04-11 22:15:41,408 INFO L226 Difference]: Without dead ends: 182 [2018-04-11 22:15:41,409 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 229 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-04-11 22:15:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-04-11 22:15:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2018-04-11 22:15:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-04-11 22:15:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 171 transitions. [2018-04-11 22:15:41,424 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 171 transitions. Word has length 125 [2018-04-11 22:15:41,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:41,425 INFO L459 AbstractCegarLoop]: Abstraction has 168 states and 171 transitions. [2018-04-11 22:15:41,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-11 22:15:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 171 transitions. [2018-04-11 22:15:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-04-11 22:15:41,426 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:41,426 INFO L355 BasicCegarLoop]: trace histogram [11, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:41,426 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:41,426 INFO L82 PathProgramCache]: Analyzing trace with hash 496368833, now seen corresponding path program 4 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 [2018-04-11 22:15:41,433 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:41,468 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 166 proven. 36 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-04-11 22:15:41,499 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 166 proven. 36 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-04-11 22:15:41,615 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:41,615 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-11 22:15:41,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 22:15:41,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 22:15:41,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:15:41,616 INFO L87 Difference]: Start difference. First operand 168 states and 171 transitions. Second operand 16 states. [2018-04-11 22:15:41,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:41,903 INFO L93 Difference]: Finished difference Result 225 states and 235 transitions. [2018-04-11 22:15:41,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-11 22:15:41,903 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2018-04-11 22:15:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:41,905 INFO L225 Difference]: With dead ends: 225 [2018-04-11 22:15:41,905 INFO L226 Difference]: Without dead ends: 224 [2018-04-11 22:15:41,906 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-04-11 22:15:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-04-11 22:15:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2018-04-11 22:15:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-04-11 22:15:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 213 transitions. [2018-04-11 22:15:41,917 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 213 transitions. Word has length 134 [2018-04-11 22:15:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:41,917 INFO L459 AbstractCegarLoop]: Abstraction has 203 states and 213 transitions. [2018-04-11 22:15:41,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 22:15:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 213 transitions. [2018-04-11 22:15:41,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-04-11 22:15:41,918 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:41,919 INFO L355 BasicCegarLoop]: trace histogram [11, 9, 9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:41,919 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:41,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1792435248, now seen corresponding path program 1 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 [2018-04-11 22:15:41,928 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:41,960 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:41,966 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:15:41,966 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:15:41,972 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:15:41,972 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:15:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 181 proven. 39 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-04-11 22:15:42,179 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 181 proven. 39 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-04-11 22:15:42,347 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:42,347 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2018-04-11 22:15:42,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-04-11 22:15:42,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-04-11 22:15:42,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2018-04-11 22:15:42,348 INFO L87 Difference]: Start difference. First operand 203 states and 213 transitions. Second operand 23 states. [2018-04-11 22:15:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:43,051 INFO L93 Difference]: Finished difference Result 217 states and 227 transitions. [2018-04-11 22:15:43,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-04-11 22:15:43,051 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 135 [2018-04-11 22:15:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:43,052 INFO L225 Difference]: With dead ends: 217 [2018-04-11 22:15:43,053 INFO L226 Difference]: Without dead ends: 216 [2018-04-11 22:15:43,053 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=462, Invalid=1344, Unknown=0, NotChecked=0, Total=1806 [2018-04-11 22:15:43,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-04-11 22:15:43,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 204. [2018-04-11 22:15:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-04-11 22:15:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 211 transitions. [2018-04-11 22:15:43,060 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 211 transitions. Word has length 135 [2018-04-11 22:15:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:43,061 INFO L459 AbstractCegarLoop]: Abstraction has 204 states and 211 transitions. [2018-04-11 22:15:43,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-04-11 22:15:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 211 transitions. [2018-04-11 22:15:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-04-11 22:15:43,062 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:43,062 INFO L355 BasicCegarLoop]: trace histogram [11, 8, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:43,062 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:43,062 INFO L82 PathProgramCache]: Analyzing trace with hash 295836888, now seen corresponding path program 3 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 [2018-04-11 22:15:43,076 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:43,112 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:43,222 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 209 proven. 33 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-04-11 22:15:43,223 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 209 proven. 33 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-04-11 22:15:43,412 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:43,412 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2018-04-11 22:15:43,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-11 22:15:43,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-11 22:15:43,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2018-04-11 22:15:43,413 INFO L87 Difference]: Start difference. First operand 204 states and 211 transitions. Second operand 24 states. [2018-04-11 22:15:43,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:43,695 INFO L93 Difference]: Finished difference Result 324 states and 337 transitions. [2018-04-11 22:15:43,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-04-11 22:15:43,696 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 153 [2018-04-11 22:15:43,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:43,698 INFO L225 Difference]: With dead ends: 324 [2018-04-11 22:15:43,698 INFO L226 Difference]: Without dead ends: 214 [2018-04-11 22:15:43,699 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 277 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=1060, Unknown=0, NotChecked=0, Total=1332 [2018-04-11 22:15:43,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-04-11 22:15:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 204. [2018-04-11 22:15:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-04-11 22:15:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 210 transitions. [2018-04-11 22:15:43,709 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 210 transitions. Word has length 153 [2018-04-11 22:15:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:43,709 INFO L459 AbstractCegarLoop]: Abstraction has 204 states and 210 transitions. [2018-04-11 22:15:43,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-11 22:15:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 210 transitions. [2018-04-11 22:15:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-04-11 22:15:43,711 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:43,711 INFO L355 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:43,711 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:43,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1535370072, now seen corresponding path program 4 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 [2018-04-11 22:15:43,720 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:43,768 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-04-11 22:15:43,820 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-04-11 22:15:43,947 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:43,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-04-11 22:15:43,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 22:15:43,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 22:15:43,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:15:43,948 INFO L87 Difference]: Start difference. First operand 204 states and 210 transitions. Second operand 16 states. [2018-04-11 22:15:44,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:44,189 INFO L93 Difference]: Finished difference Result 274 states and 288 transitions. [2018-04-11 22:15:44,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-11 22:15:44,190 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 162 [2018-04-11 22:15:44,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:44,192 INFO L225 Difference]: With dead ends: 274 [2018-04-11 22:15:44,192 INFO L226 Difference]: Without dead ends: 254 [2018-04-11 22:15:44,193 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2018-04-11 22:15:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-04-11 22:15:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 244. [2018-04-11 22:15:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-04-11 22:15:44,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 254 transitions. [2018-04-11 22:15:44,205 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 254 transitions. Word has length 162 [2018-04-11 22:15:44,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:44,205 INFO L459 AbstractCegarLoop]: Abstraction has 244 states and 254 transitions. [2018-04-11 22:15:44,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 22:15:44,205 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 254 transitions. [2018-04-11 22:15:44,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-04-11 22:15:44,206 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:44,207 INFO L355 BasicCegarLoop]: trace histogram [15, 13, 12, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:44,207 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:44,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1176544063, now seen corresponding path program 5 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 [2018-04-11 22:15:44,216 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:44,267 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 552 proven. 18 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-04-11 22:15:44,615 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 552 proven. 18 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-04-11 22:15:44,803 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:44,803 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 27 [2018-04-11 22:15:44,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-04-11 22:15:44,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-04-11 22:15:44,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2018-04-11 22:15:44,804 INFO L87 Difference]: Start difference. First operand 244 states and 254 transitions. Second operand 27 states. [2018-04-11 22:15:45,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:45,276 INFO L93 Difference]: Finished difference Result 443 states and 463 transitions. [2018-04-11 22:15:45,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-11 22:15:45,277 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2018-04-11 22:15:45,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:45,279 INFO L225 Difference]: With dead ends: 443 [2018-04-11 22:15:45,279 INFO L226 Difference]: Without dead ends: 298 [2018-04-11 22:15:45,281 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 307 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=1725, Unknown=0, NotChecked=0, Total=2162 [2018-04-11 22:15:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-04-11 22:15:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 290. [2018-04-11 22:15:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-04-11 22:15:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 299 transitions. [2018-04-11 22:15:45,295 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 299 transitions. Word has length 170 [2018-04-11 22:15:45,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:45,296 INFO L459 AbstractCegarLoop]: Abstraction has 290 states and 299 transitions. [2018-04-11 22:15:45,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-04-11 22:15:45,296 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 299 transitions. [2018-04-11 22:15:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-04-11 22:15:45,298 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:45,298 INFO L355 BasicCegarLoop]: trace histogram [20, 17, 16, 16, 16, 16, 16, 16, 16, 4, 4, 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] [2018-04-11 22:15:45,298 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:45,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1905766323, now seen corresponding path program 6 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 [2018-04-11 22:15:45,304 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:45,346 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 856 proven. 42 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2018-04-11 22:15:45,554 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 856 proven. 42 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2018-04-11 22:15:45,779 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:45,779 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 33 [2018-04-11 22:15:45,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-04-11 22:15:45,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-04-11 22:15:45,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2018-04-11 22:15:45,780 INFO L87 Difference]: Start difference. First operand 290 states and 299 transitions. Second operand 33 states. [2018-04-11 22:15:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:46,303 INFO L93 Difference]: Finished difference Result 491 states and 510 transitions. [2018-04-11 22:15:46,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-04-11 22:15:46,303 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 226 [2018-04-11 22:15:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:46,305 INFO L225 Difference]: With dead ends: 491 [2018-04-11 22:15:46,306 INFO L226 Difference]: Without dead ends: 356 [2018-04-11 22:15:46,307 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 411 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=640, Invalid=2782, Unknown=0, NotChecked=0, Total=3422 [2018-04-11 22:15:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-04-11 22:15:46,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 345. [2018-04-11 22:15:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-04-11 22:15:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 354 transitions. [2018-04-11 22:15:46,324 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 354 transitions. Word has length 226 [2018-04-11 22:15:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:46,325 INFO L459 AbstractCegarLoop]: Abstraction has 345 states and 354 transitions. [2018-04-11 22:15:46,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-04-11 22:15:46,325 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 354 transitions. [2018-04-11 22:15:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-04-11 22:15:46,327 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:46,327 INFO L355 BasicCegarLoop]: trace histogram [25, 21, 20, 20, 20, 20, 20, 20, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:46,327 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:46,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1014050777, now seen corresponding path program 7 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 [2018-04-11 22:15:46,338 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:46,400 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 1408 proven. 62 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2018-04-11 22:15:46,610 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 1408 proven. 62 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2018-04-11 22:15:46,917 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:46,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 30 [2018-04-11 22:15:46,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-11 22:15:46,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-11 22:15:46,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2018-04-11 22:15:46,918 INFO L87 Difference]: Start difference. First operand 345 states and 354 transitions. Second operand 30 states. [2018-04-11 22:15:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:47,796 INFO L93 Difference]: Finished difference Result 496 states and 514 transitions. [2018-04-11 22:15:47,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-04-11 22:15:47,798 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 282 [2018-04-11 22:15:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:47,800 INFO L225 Difference]: With dead ends: 496 [2018-04-11 22:15:47,800 INFO L226 Difference]: Without dead ends: 355 [2018-04-11 22:15:47,801 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 527 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=426, Invalid=1830, Unknown=0, NotChecked=0, Total=2256 [2018-04-11 22:15:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-04-11 22:15:47,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 345. [2018-04-11 22:15:47,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-04-11 22:15:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 352 transitions. [2018-04-11 22:15:47,810 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 352 transitions. Word has length 282 [2018-04-11 22:15:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:47,811 INFO L459 AbstractCegarLoop]: Abstraction has 345 states and 352 transitions. [2018-04-11 22:15:47,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-11 22:15:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 352 transitions. [2018-04-11 22:15:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-04-11 22:15:47,812 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:47,812 INFO L355 BasicCegarLoop]: trace histogram [26, 22, 21, 21, 21, 21, 21, 21, 21, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:47,812 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:47,813 INFO L82 PathProgramCache]: Analyzing trace with hash 528332737, now seen corresponding path program 8 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 [2018-04-11 22:15:47,831 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:47,894 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 1217 proven. 76 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-04-11 22:15:48,318 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2285 backedges. 1217 proven. 76 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-04-11 22:15:48,634 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:48,634 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 39 [2018-04-11 22:15:48,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-04-11 22:15:48,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-04-11 22:15:48,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1257, Unknown=0, NotChecked=0, Total=1482 [2018-04-11 22:15:48,635 INFO L87 Difference]: Start difference. First operand 345 states and 352 transitions. Second operand 39 states. [2018-04-11 22:15:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:49,394 INFO L93 Difference]: Finished difference Result 545 states and 560 transitions. [2018-04-11 22:15:49,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-04-11 22:15:49,394 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 291 [2018-04-11 22:15:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:49,396 INFO L225 Difference]: With dead ends: 545 [2018-04-11 22:15:49,396 INFO L226 Difference]: Without dead ends: 420 [2018-04-11 22:15:49,398 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 533 SyntacticMatches, 11 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2018-04-11 22:15:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2018-04-11 22:15:49,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 409. [2018-04-11 22:15:49,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-04-11 22:15:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 416 transitions. [2018-04-11 22:15:49,410 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 416 transitions. Word has length 291 [2018-04-11 22:15:49,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:49,411 INFO L459 AbstractCegarLoop]: Abstraction has 409 states and 416 transitions. [2018-04-11 22:15:49,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-04-11 22:15:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 416 transitions. [2018-04-11 22:15:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-04-11 22:15:49,412 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:49,413 INFO L355 BasicCegarLoop]: trace histogram [32, 27, 26, 26, 26, 26, 26, 26, 26, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:49,413 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:49,413 INFO L82 PathProgramCache]: Analyzing trace with hash 374791885, now seen corresponding path program 9 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 [2018-04-11 22:15:49,421 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:49,483 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3518 backedges. 2209 proven. 100 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2018-04-11 22:15:49,729 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3518 backedges. 2209 proven. 100 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2018-04-11 22:15:50,117 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:50,117 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 36 [2018-04-11 22:15:50,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-04-11 22:15:50,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-04-11 22:15:50,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1054, Unknown=0, NotChecked=0, Total=1260 [2018-04-11 22:15:50,118 INFO L87 Difference]: Start difference. First operand 409 states and 416 transitions. Second operand 36 states. [2018-04-11 22:15:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:50,732 INFO L93 Difference]: Finished difference Result 550 states and 563 transitions. [2018-04-11 22:15:50,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-04-11 22:15:50,732 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 356 [2018-04-11 22:15:50,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:50,734 INFO L225 Difference]: With dead ends: 550 [2018-04-11 22:15:50,734 INFO L226 Difference]: Without dead ends: 419 [2018-04-11 22:15:50,736 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 667 SyntacticMatches, 11 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=614, Invalid=2808, Unknown=0, NotChecked=0, Total=3422 [2018-04-11 22:15:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-04-11 22:15:50,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 409. [2018-04-11 22:15:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-04-11 22:15:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 414 transitions. [2018-04-11 22:15:50,746 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 414 transitions. Word has length 356 [2018-04-11 22:15:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:50,746 INFO L459 AbstractCegarLoop]: Abstraction has 409 states and 414 transitions. [2018-04-11 22:15:50,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-04-11 22:15:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 414 transitions. [2018-04-11 22:15:50,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-04-11 22:15:50,748 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:50,748 INFO L355 BasicCegarLoop]: trace histogram [33, 28, 27, 27, 27, 27, 27, 27, 27, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:50,748 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:50,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1478204237, now seen corresponding path program 10 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 [2018-04-11 22:15:50,767 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:50,844 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3765 backedges. 1635 proven. 120 refuted. 0 times theorem prover too weak. 2010 trivial. 0 not checked. [2018-04-11 22:15:51,574 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3765 backedges. 1635 proven. 120 refuted. 0 times theorem prover too weak. 2010 trivial. 0 not checked. [2018-04-11 22:15:51,924 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:51,924 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 45 [2018-04-11 22:15:51,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-04-11 22:15:51,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-04-11 22:15:51,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2018-04-11 22:15:51,925 INFO L87 Difference]: Start difference. First operand 409 states and 414 transitions. Second operand 45 states. [2018-04-11 22:15:52,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:52,723 INFO L93 Difference]: Finished difference Result 608 states and 619 transitions. [2018-04-11 22:15:52,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-11 22:15:52,723 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 365 [2018-04-11 22:15:52,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:52,726 INFO L225 Difference]: With dead ends: 608 [2018-04-11 22:15:52,727 INFO L226 Difference]: Without dead ends: 493 [2018-04-11 22:15:52,729 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 673 SyntacticMatches, 13 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1160, Invalid=5646, Unknown=0, NotChecked=0, Total=6806 [2018-04-11 22:15:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2018-04-11 22:15:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 482. [2018-04-11 22:15:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-04-11 22:15:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 487 transitions. [2018-04-11 22:15:52,746 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 487 transitions. Word has length 365 [2018-04-11 22:15:52,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:52,747 INFO L459 AbstractCegarLoop]: Abstraction has 482 states and 487 transitions. [2018-04-11 22:15:52,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-04-11 22:15:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 487 transitions. [2018-04-11 22:15:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-04-11 22:15:52,750 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:52,751 INFO L355 BasicCegarLoop]: trace histogram [40, 34, 33, 33, 33, 33, 33, 33, 33, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:52,751 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:52,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2074157017, now seen corresponding path program 11 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 [2018-04-11 22:15:52,762 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:52,859 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5613 backedges. 3236 proven. 147 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2018-04-11 22:15:53,207 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5613 backedges. 3236 proven. 147 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2018-04-11 22:15:53,647 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:53,648 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 42 [2018-04-11 22:15:53,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-04-11 22:15:53,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-04-11 22:15:53,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2018-04-11 22:15:53,649 INFO L87 Difference]: Start difference. First operand 482 states and 487 transitions. Second operand 42 states. [2018-04-11 22:15:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:54,171 INFO L93 Difference]: Finished difference Result 617 states and 625 transitions. [2018-04-11 22:15:54,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-04-11 22:15:54,171 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 439 [2018-04-11 22:15:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:54,173 INFO L225 Difference]: With dead ends: 617 [2018-04-11 22:15:54,173 INFO L226 Difference]: Without dead ends: 496 [2018-04-11 22:15:54,175 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 825 SyntacticMatches, 13 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=836, Invalid=3994, Unknown=0, NotChecked=0, Total=4830 [2018-04-11 22:15:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2018-04-11 22:15:54,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 482. [2018-04-11 22:15:54,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-04-11 22:15:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 485 transitions. [2018-04-11 22:15:54,192 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 485 transitions. Word has length 439 [2018-04-11 22:15:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:54,193 INFO L459 AbstractCegarLoop]: Abstraction has 482 states and 485 transitions. [2018-04-11 22:15:54,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-04-11 22:15:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 485 transitions. [2018-04-11 22:15:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-04-11 22:15:54,196 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:54,197 INFO L355 BasicCegarLoop]: trace histogram [41, 35, 34, 34, 34, 34, 34, 34, 34, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:54,197 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:54,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1597753281, now seen corresponding path program 12 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 [2018-04-11 22:15:54,207 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:54,293 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5925 backedges. 1878 proven. 210 refuted. 0 times theorem prover too weak. 3837 trivial. 0 not checked. [2018-04-11 22:15:54,484 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5925 backedges. 1878 proven. 210 refuted. 0 times theorem prover too weak. 3837 trivial. 0 not checked. [2018-04-11 22:15:54,839 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:54,840 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-11 22:15:54,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-11 22:15:54,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-11 22:15:54,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-04-11 22:15:54,841 INFO L87 Difference]: Start difference. First operand 482 states and 485 transitions. Second operand 32 states. [2018-04-11 22:15:55,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:55,979 INFO L93 Difference]: Finished difference Result 591 states and 609 transitions. [2018-04-11 22:15:55,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 22:15:55,979 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 448 [2018-04-11 22:15:55,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:55,981 INFO L225 Difference]: With dead ends: 591 [2018-04-11 22:15:55,982 INFO L226 Difference]: Without dead ends: 590 [2018-04-11 22:15:55,983 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 871 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2018-04-11 22:15:55,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2018-04-11 22:15:56,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 553. [2018-04-11 22:15:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2018-04-11 22:15:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 571 transitions. [2018-04-11 22:15:56,003 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 571 transitions. Word has length 448 [2018-04-11 22:15:56,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:56,003 INFO L459 AbstractCegarLoop]: Abstraction has 553 states and 571 transitions. [2018-04-11 22:15:56,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-11 22:15:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 571 transitions. [2018-04-11 22:15:56,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-04-11 22:15:56,006 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:56,007 INFO L355 BasicCegarLoop]: trace histogram [41, 35, 35, 34, 34, 34, 34, 34, 34, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:56,007 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:56,007 INFO L82 PathProgramCache]: Analyzing trace with hash -2009255728, now seen corresponding path program 2 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 [2018-04-11 22:15:56,017 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:56,104 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:15:56,119 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:15:56,119 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:15:56,123 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:15:56,123 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:15:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5959 backedges. 1935 proven. 217 refuted. 0 times theorem prover too weak. 3807 trivial. 0 not checked. [2018-04-11 22:15:56,770 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:15:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5959 backedges. 1935 proven. 217 refuted. 0 times theorem prover too weak. 3807 trivial. 0 not checked. [2018-04-11 22:15:57,286 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:15:57,286 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2018-04-11 22:15:57,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-04-11 22:15:57,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-04-11 22:15:57,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2018-04-11 22:15:57,288 INFO L87 Difference]: Start difference. First operand 553 states and 571 transitions. Second operand 39 states. [2018-04-11 22:15:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:15:59,456 INFO L93 Difference]: Finished difference Result 579 states and 597 transitions. [2018-04-11 22:15:59,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-04-11 22:15:59,457 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 449 [2018-04-11 22:15:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:15:59,459 INFO L225 Difference]: With dead ends: 579 [2018-04-11 22:15:59,460 INFO L226 Difference]: Without dead ends: 578 [2018-04-11 22:15:59,462 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 850 SyntacticMatches, 11 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1574, Invalid=5232, Unknown=0, NotChecked=0, Total=6806 [2018-04-11 22:15:59,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2018-04-11 22:15:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 554. [2018-04-11 22:15:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2018-04-11 22:15:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 565 transitions. [2018-04-11 22:15:59,480 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 565 transitions. Word has length 449 [2018-04-11 22:15:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:15:59,481 INFO L459 AbstractCegarLoop]: Abstraction has 554 states and 565 transitions. [2018-04-11 22:15:59,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-04-11 22:15:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 565 transitions. [2018-04-11 22:15:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-04-11 22:15:59,484 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:15:59,484 INFO L355 BasicCegarLoop]: trace histogram [41, 34, 34, 34, 34, 34, 34, 34, 34, 8, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:15:59,485 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:15:59,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1327861288, now seen corresponding path program 5 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 [2018-04-11 22:15:59,494 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:15:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:15:59,628 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5959 backedges. 2111 proven. 203 refuted. 0 times theorem prover too weak. 3645 trivial. 0 not checked. [2018-04-11 22:16:00,172 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5959 backedges. 2111 proven. 203 refuted. 0 times theorem prover too weak. 3645 trivial. 0 not checked. [2018-04-11 22:16:00,754 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:00,754 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 48 [2018-04-11 22:16:00,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-04-11 22:16:00,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-04-11 22:16:00,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=1918, Unknown=0, NotChecked=0, Total=2256 [2018-04-11 22:16:00,756 INFO L87 Difference]: Start difference. First operand 554 states and 565 transitions. Second operand 48 states. [2018-04-11 22:16:01,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:01,402 INFO L93 Difference]: Finished difference Result 746 states and 767 transitions. [2018-04-11 22:16:01,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-04-11 22:16:01,402 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 467 [2018-04-11 22:16:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:01,404 INFO L225 Difference]: With dead ends: 746 [2018-04-11 22:16:01,404 INFO L226 Difference]: Without dead ends: 564 [2018-04-11 22:16:01,405 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 873 SyntacticMatches, 15 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2324 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1092, Invalid=5388, Unknown=0, NotChecked=0, Total=6480 [2018-04-11 22:16:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2018-04-11 22:16:01,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 554. [2018-04-11 22:16:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2018-04-11 22:16:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 564 transitions. [2018-04-11 22:16:01,422 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 564 transitions. Word has length 467 [2018-04-11 22:16:01,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:01,423 INFO L459 AbstractCegarLoop]: Abstraction has 554 states and 564 transitions. [2018-04-11 22:16:01,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-04-11 22:16:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 564 transitions. [2018-04-11 22:16:01,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-04-11 22:16:01,426 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:01,427 INFO L355 BasicCegarLoop]: trace histogram [42, 35, 35, 35, 35, 35, 35, 35, 35, 8, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:01,427 INFO L408 AbstractCegarLoop]: === Iteration 30 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:01,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1109709224, now seen corresponding path program 6 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 [2018-04-11 22:16:01,436 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:01,557 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6279 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 6055 trivial. 0 not checked. [2018-04-11 22:16:01,770 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6279 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 6055 trivial. 0 not checked. [2018-04-11 22:16:02,083 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:02,083 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-04-11 22:16:02,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-11 22:16:02,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-11 22:16:02,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2018-04-11 22:16:02,084 INFO L87 Difference]: Start difference. First operand 554 states and 564 transitions. Second operand 32 states. [2018-04-11 22:16:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:02,514 INFO L93 Difference]: Finished difference Result 664 states and 690 transitions. [2018-04-11 22:16:02,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 22:16:02,514 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 476 [2018-04-11 22:16:02,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:02,516 INFO L225 Difference]: With dead ends: 664 [2018-04-11 22:16:02,516 INFO L226 Difference]: Without dead ends: 644 [2018-04-11 22:16:02,517 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 921 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1155, Invalid=2385, Unknown=0, NotChecked=0, Total=3540 [2018-04-11 22:16:02,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-04-11 22:16:02,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 634. [2018-04-11 22:16:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2018-04-11 22:16:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 652 transitions. [2018-04-11 22:16:02,539 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 652 transitions. Word has length 476 [2018-04-11 22:16:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:02,540 INFO L459 AbstractCegarLoop]: Abstraction has 634 states and 652 transitions. [2018-04-11 22:16:02,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-11 22:16:02,540 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 652 transitions. [2018-04-11 22:16:02,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-04-11 22:16:02,544 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:02,545 INFO L355 BasicCegarLoop]: trace histogram [49, 43, 42, 42, 42, 42, 42, 42, 42, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:02,545 INFO L408 AbstractCegarLoop]: === Iteration 31 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:02,545 INFO L82 PathProgramCache]: Analyzing trace with hash 701204417, now seen corresponding path program 13 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 [2018-04-11 22:16:02,554 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:02,699 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8745 backedges. 4742 proven. 174 refuted. 0 times theorem prover too weak. 3829 trivial. 0 not checked. [2018-04-11 22:16:03,328 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8745 backedges. 4742 proven. 174 refuted. 0 times theorem prover too weak. 3829 trivial. 0 not checked. [2018-04-11 22:16:03,833 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:03,833 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 51 [2018-04-11 22:16:03,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-04-11 22:16:03,834 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-04-11 22:16:03,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=2189, Unknown=0, NotChecked=0, Total=2550 [2018-04-11 22:16:03,834 INFO L87 Difference]: Start difference. First operand 634 states and 652 transitions. Second operand 51 states. [2018-04-11 22:16:04,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:04,859 INFO L93 Difference]: Finished difference Result 981 states and 1017 transitions. [2018-04-11 22:16:04,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-04-11 22:16:04,860 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 520 [2018-04-11 22:16:04,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:04,863 INFO L225 Difference]: With dead ends: 981 [2018-04-11 22:16:04,863 INFO L226 Difference]: Without dead ends: 724 [2018-04-11 22:16:04,867 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 975 SyntacticMatches, 15 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2189 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1477, Invalid=7453, Unknown=0, NotChecked=0, Total=8930 [2018-04-11 22:16:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2018-04-11 22:16:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 716. [2018-04-11 22:16:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2018-04-11 22:16:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 733 transitions. [2018-04-11 22:16:04,889 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 733 transitions. Word has length 520 [2018-04-11 22:16:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:04,890 INFO L459 AbstractCegarLoop]: Abstraction has 716 states and 733 transitions. [2018-04-11 22:16:04,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-04-11 22:16:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 733 transitions. [2018-04-11 22:16:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-04-11 22:16:04,895 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:04,896 INFO L355 BasicCegarLoop]: trace histogram [58, 51, 50, 50, 50, 50, 50, 50, 50, 8, 8, 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] [2018-04-11 22:16:04,896 INFO L408 AbstractCegarLoop]: === Iteration 32 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:04,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1839288499, now seen corresponding path program 14 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 [2018-04-11 22:16:04,905 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:05,073 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12372 backedges. 5938 proven. 238 refuted. 0 times theorem prover too weak. 6196 trivial. 0 not checked. [2018-04-11 22:16:05,795 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12372 backedges. 5938 proven. 238 refuted. 0 times theorem prover too weak. 6196 trivial. 0 not checked. [2018-04-11 22:16:06,378 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:06,378 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 57 [2018-04-11 22:16:06,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-04-11 22:16:06,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-04-11 22:16:06,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=2751, Unknown=0, NotChecked=0, Total=3192 [2018-04-11 22:16:06,379 INFO L87 Difference]: Start difference. First operand 716 states and 733 transitions. Second operand 57 states. [2018-04-11 22:16:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:07,535 INFO L93 Difference]: Finished difference Result 1065 states and 1100 transitions. [2018-04-11 22:16:07,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-04-11 22:16:07,536 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 612 [2018-04-11 22:16:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:07,540 INFO L225 Difference]: With dead ends: 1065 [2018-04-11 22:16:07,540 INFO L226 Difference]: Without dead ends: 818 [2018-04-11 22:16:07,543 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1273 GetRequests, 1151 SyntacticMatches, 17 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2844 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1832, Invalid=9510, Unknown=0, NotChecked=0, Total=11342 [2018-04-11 22:16:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2018-04-11 22:16:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 807. [2018-04-11 22:16:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-04-11 22:16:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 824 transitions. [2018-04-11 22:16:07,570 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 824 transitions. Word has length 612 [2018-04-11 22:16:07,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:07,570 INFO L459 AbstractCegarLoop]: Abstraction has 807 states and 824 transitions. [2018-04-11 22:16:07,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-04-11 22:16:07,571 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 824 transitions. [2018-04-11 22:16:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-04-11 22:16:07,577 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:07,577 INFO L355 BasicCegarLoop]: trace histogram [67, 59, 58, 58, 58, 58, 58, 58, 58, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:07,577 INFO L408 AbstractCegarLoop]: === Iteration 33 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:07,578 INFO L82 PathProgramCache]: Analyzing trace with hash -851448615, now seen corresponding path program 15 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 [2018-04-11 22:16:07,586 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:07,741 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16627 backedges. 9300 proven. 268 refuted. 0 times theorem prover too weak. 7059 trivial. 0 not checked. [2018-04-11 22:16:08,390 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16627 backedges. 9300 proven. 268 refuted. 0 times theorem prover too weak. 7059 trivial. 0 not checked. [2018-04-11 22:16:09,077 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:09,078 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 54 [2018-04-11 22:16:09,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-04-11 22:16:09,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-04-11 22:16:09,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2446, Unknown=0, NotChecked=0, Total=2862 [2018-04-11 22:16:09,079 INFO L87 Difference]: Start difference. First operand 807 states and 824 transitions. Second operand 54 states. [2018-04-11 22:16:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:09,803 INFO L93 Difference]: Finished difference Result 1070 states and 1108 transitions. [2018-04-11 22:16:09,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-04-11 22:16:09,804 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 704 [2018-04-11 22:16:09,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:09,806 INFO L225 Difference]: With dead ends: 1070 [2018-04-11 22:16:09,806 INFO L226 Difference]: Without dead ends: 817 [2018-04-11 22:16:09,809 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1446 GetRequests, 1339 SyntacticMatches, 17 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1382, Invalid=6990, Unknown=0, NotChecked=0, Total=8372 [2018-04-11 22:16:09,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2018-04-11 22:16:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 807. [2018-04-11 22:16:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-04-11 22:16:09,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 822 transitions. [2018-04-11 22:16:09,835 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 822 transitions. Word has length 704 [2018-04-11 22:16:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:09,836 INFO L459 AbstractCegarLoop]: Abstraction has 807 states and 822 transitions. [2018-04-11 22:16:09,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-04-11 22:16:09,836 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 822 transitions. [2018-04-11 22:16:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2018-04-11 22:16:09,843 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:09,843 INFO L355 BasicCegarLoop]: trace histogram [68, 60, 59, 59, 59, 59, 59, 59, 59, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:09,844 INFO L408 AbstractCegarLoop]: === Iteration 34 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:09,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1778631361, now seen corresponding path program 16 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 [2018-04-11 22:16:09,854 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:09,971 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17168 backedges. 7263 proven. 312 refuted. 0 times theorem prover too weak. 9593 trivial. 0 not checked. [2018-04-11 22:16:10,576 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 17168 backedges. 7263 proven. 312 refuted. 0 times theorem prover too weak. 9593 trivial. 0 not checked. [2018-04-11 22:16:11,288 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:11,288 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 63 [2018-04-11 22:16:11,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-04-11 22:16:11,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-04-11 22:16:11,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=3377, Unknown=0, NotChecked=0, Total=3906 [2018-04-11 22:16:11,289 INFO L87 Difference]: Start difference. First operand 807 states and 822 transitions. Second operand 63 states. [2018-04-11 22:16:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:12,861 INFO L93 Difference]: Finished difference Result 1155 states and 1186 transitions. [2018-04-11 22:16:12,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-04-11 22:16:12,883 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 713 [2018-04-11 22:16:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:12,887 INFO L225 Difference]: With dead ends: 1155 [2018-04-11 22:16:12,887 INFO L226 Difference]: Without dead ends: 918 [2018-04-11 22:16:12,890 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1481 GetRequests, 1345 SyntacticMatches, 19 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3584 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2225, Invalid=11817, Unknown=0, NotChecked=0, Total=14042 [2018-04-11 22:16:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2018-04-11 22:16:12,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 907. [2018-04-11 22:16:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2018-04-11 22:16:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 922 transitions. [2018-04-11 22:16:12,910 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 922 transitions. Word has length 713 [2018-04-11 22:16:12,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:12,910 INFO L459 AbstractCegarLoop]: Abstraction has 907 states and 922 transitions. [2018-04-11 22:16:12,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-04-11 22:16:12,911 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 922 transitions. [2018-04-11 22:16:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-04-11 22:16:12,916 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:12,916 INFO L355 BasicCegarLoop]: trace histogram [78, 69, 68, 68, 68, 68, 68, 68, 68, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:12,917 INFO L408 AbstractCegarLoop]: === Iteration 35 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:12,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1423910861, now seen corresponding path program 17 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 [2018-04-11 22:16:12,923 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:13,075 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 22749 backedges. 11903 proven. 342 refuted. 0 times theorem prover too weak. 10504 trivial. 0 not checked. [2018-04-11 22:16:13,714 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 22749 backedges. 11903 proven. 342 refuted. 0 times theorem prover too weak. 10504 trivial. 0 not checked. [2018-04-11 22:16:14,541 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:14,541 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 60 [2018-04-11 22:16:14,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-11 22:16:14,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-11 22:16:14,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=3038, Unknown=0, NotChecked=0, Total=3540 [2018-04-11 22:16:14,542 INFO L87 Difference]: Start difference. First operand 907 states and 922 transitions. Second operand 60 states. [2018-04-11 22:16:15,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:15,423 INFO L93 Difference]: Finished difference Result 1160 states and 1193 transitions. [2018-04-11 22:16:15,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-04-11 22:16:15,424 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 814 [2018-04-11 22:16:15,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:15,426 INFO L225 Difference]: With dead ends: 1160 [2018-04-11 22:16:15,426 INFO L226 Difference]: Without dead ends: 917 [2018-04-11 22:16:15,428 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1671 GetRequests, 1551 SyntacticMatches, 19 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3915 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1706, Invalid=8800, Unknown=0, NotChecked=0, Total=10506 [2018-04-11 22:16:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2018-04-11 22:16:15,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 907. [2018-04-11 22:16:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2018-04-11 22:16:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 920 transitions. [2018-04-11 22:16:15,445 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 920 transitions. Word has length 814 [2018-04-11 22:16:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:15,445 INFO L459 AbstractCegarLoop]: Abstraction has 907 states and 920 transitions. [2018-04-11 22:16:15,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-11 22:16:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 920 transitions. [2018-04-11 22:16:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2018-04-11 22:16:15,450 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:15,450 INFO L355 BasicCegarLoop]: trace histogram [79, 70, 69, 69, 69, 69, 69, 69, 69, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:15,450 INFO L408 AbstractCegarLoop]: === Iteration 36 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:15,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2128976461, now seen corresponding path program 18 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 [2018-04-11 22:16:15,458 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:15,669 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 23382 backedges. 8717 proven. 396 refuted. 0 times theorem prover too weak. 14269 trivial. 0 not checked. [2018-04-11 22:16:16,538 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 23382 backedges. 8717 proven. 396 refuted. 0 times theorem prover too weak. 14269 trivial. 0 not checked. [2018-04-11 22:16:17,411 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:17,411 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 69 [2018-04-11 22:16:17,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-04-11 22:16:17,412 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-04-11 22:16:17,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=4067, Unknown=0, NotChecked=0, Total=4692 [2018-04-11 22:16:17,412 INFO L87 Difference]: Start difference. First operand 907 states and 920 transitions. Second operand 69 states. [2018-04-11 22:16:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:18,952 INFO L93 Difference]: Finished difference Result 1254 states and 1281 transitions. [2018-04-11 22:16:18,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-04-11 22:16:18,952 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 823 [2018-04-11 22:16:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:18,955 INFO L225 Difference]: With dead ends: 1254 [2018-04-11 22:16:18,955 INFO L226 Difference]: Without dead ends: 1027 [2018-04-11 22:16:18,957 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1707 GetRequests, 1557 SyntacticMatches, 21 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4409 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2656, Invalid=14374, Unknown=0, NotChecked=0, Total=17030 [2018-04-11 22:16:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2018-04-11 22:16:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1016. [2018-04-11 22:16:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2018-04-11 22:16:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1029 transitions. [2018-04-11 22:16:18,975 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1029 transitions. Word has length 823 [2018-04-11 22:16:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:18,976 INFO L459 AbstractCegarLoop]: Abstraction has 1016 states and 1029 transitions. [2018-04-11 22:16:18,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-04-11 22:16:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1029 transitions. [2018-04-11 22:16:18,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2018-04-11 22:16:18,981 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:18,982 INFO L355 BasicCegarLoop]: trace histogram [90, 80, 79, 79, 79, 79, 79, 79, 79, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:18,982 INFO L408 AbstractCegarLoop]: === Iteration 37 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:18,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1452915929, now seen corresponding path program 19 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 [2018-04-11 22:16:18,987 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:19,151 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30556 backedges. 14912 proven. 425 refuted. 0 times theorem prover too weak. 15219 trivial. 0 not checked. [2018-04-11 22:16:19,939 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30556 backedges. 14912 proven. 425 refuted. 0 times theorem prover too weak. 15219 trivial. 0 not checked. [2018-04-11 22:16:21,019 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:21,020 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 66 [2018-04-11 22:16:21,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-04-11 22:16:21,021 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-04-11 22:16:21,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=3694, Unknown=0, NotChecked=0, Total=4290 [2018-04-11 22:16:21,021 INFO L87 Difference]: Start difference. First operand 1016 states and 1029 transitions. Second operand 66 states. [2018-04-11 22:16:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:22,069 INFO L93 Difference]: Finished difference Result 1259 states and 1287 transitions. [2018-04-11 22:16:22,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-04-11 22:16:22,069 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 933 [2018-04-11 22:16:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:22,072 INFO L225 Difference]: With dead ends: 1259 [2018-04-11 22:16:22,072 INFO L226 Difference]: Without dead ends: 1026 [2018-04-11 22:16:22,074 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1914 GetRequests, 1781 SyntacticMatches, 21 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4865 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2064, Invalid=10818, Unknown=0, NotChecked=0, Total=12882 [2018-04-11 22:16:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2018-04-11 22:16:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1016. [2018-04-11 22:16:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2018-04-11 22:16:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1027 transitions. [2018-04-11 22:16:22,094 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1027 transitions. Word has length 933 [2018-04-11 22:16:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:22,094 INFO L459 AbstractCegarLoop]: Abstraction has 1016 states and 1027 transitions. [2018-04-11 22:16:22,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-04-11 22:16:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1027 transitions. [2018-04-11 22:16:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2018-04-11 22:16:22,100 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:22,101 INFO L355 BasicCegarLoop]: trace histogram [91, 81, 80, 80, 80, 80, 80, 80, 80, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:22,101 INFO L408 AbstractCegarLoop]: === Iteration 38 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash 11793089, now seen corresponding path program 20 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 [2018-04-11 22:16:22,106 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:22,257 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 31290 backedges. 10300 proven. 490 refuted. 0 times theorem prover too weak. 20500 trivial. 0 not checked. [2018-04-11 22:16:23,163 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 31290 backedges. 10300 proven. 490 refuted. 0 times theorem prover too weak. 20500 trivial. 0 not checked. [2018-04-11 22:16:24,250 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:24,250 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 75 [2018-04-11 22:16:24,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-04-11 22:16:24,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-04-11 22:16:24,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=729, Invalid=4821, Unknown=0, NotChecked=0, Total=5550 [2018-04-11 22:16:24,252 INFO L87 Difference]: Start difference. First operand 1016 states and 1027 transitions. Second operand 75 states. [2018-04-11 22:16:26,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:26,102 INFO L93 Difference]: Finished difference Result 1362 states and 1385 transitions. [2018-04-11 22:16:26,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-04-11 22:16:26,103 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 942 [2018-04-11 22:16:26,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:26,106 INFO L225 Difference]: With dead ends: 1362 [2018-04-11 22:16:26,106 INFO L226 Difference]: Without dead ends: 1145 [2018-04-11 22:16:26,107 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1951 GetRequests, 1787 SyntacticMatches, 23 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5319 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3125, Invalid=17181, Unknown=0, NotChecked=0, Total=20306 [2018-04-11 22:16:26,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2018-04-11 22:16:26,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1134. [2018-04-11 22:16:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2018-04-11 22:16:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1145 transitions. [2018-04-11 22:16:26,128 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1145 transitions. Word has length 942 [2018-04-11 22:16:26,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:26,128 INFO L459 AbstractCegarLoop]: Abstraction has 1134 states and 1145 transitions. [2018-04-11 22:16:26,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-04-11 22:16:26,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1145 transitions. [2018-04-11 22:16:26,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1062 [2018-04-11 22:16:26,135 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:26,135 INFO L355 BasicCegarLoop]: trace histogram [103, 92, 91, 91, 91, 91, 91, 91, 91, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:26,135 INFO L408 AbstractCegarLoop]: === Iteration 39 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:26,135 INFO L82 PathProgramCache]: Analyzing trace with hash 823248845, now seen corresponding path program 21 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 [2018-04-11 22:16:26,143 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:26,323 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 40351 backedges. 18354 proven. 517 refuted. 0 times theorem prover too weak. 21480 trivial. 0 not checked. [2018-04-11 22:16:27,314 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 40351 backedges. 18354 proven. 517 refuted. 0 times theorem prover too weak. 21480 trivial. 0 not checked. [2018-04-11 22:16:28,498 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:28,499 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 72 [2018-04-11 22:16:28,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-04-11 22:16:28,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-04-11 22:16:28,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=698, Invalid=4414, Unknown=0, NotChecked=0, Total=5112 [2018-04-11 22:16:28,500 INFO L87 Difference]: Start difference. First operand 1134 states and 1145 transitions. Second operand 72 states. [2018-04-11 22:16:29,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:29,557 INFO L93 Difference]: Finished difference Result 1367 states and 1390 transitions. [2018-04-11 22:16:29,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-04-11 22:16:29,558 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 1061 [2018-04-11 22:16:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:29,561 INFO L225 Difference]: With dead ends: 1367 [2018-04-11 22:16:29,561 INFO L226 Difference]: Without dead ends: 1144 [2018-04-11 22:16:29,563 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2175 GetRequests, 2029 SyntacticMatches, 23 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5918 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2456, Invalid=13044, Unknown=0, NotChecked=0, Total=15500 [2018-04-11 22:16:29,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2018-04-11 22:16:29,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1134. [2018-04-11 22:16:29,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2018-04-11 22:16:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1143 transitions. [2018-04-11 22:16:29,584 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1143 transitions. Word has length 1061 [2018-04-11 22:16:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:29,585 INFO L459 AbstractCegarLoop]: Abstraction has 1134 states and 1143 transitions. [2018-04-11 22:16:29,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-04-11 22:16:29,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1143 transitions. [2018-04-11 22:16:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-04-11 22:16:29,596 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:29,596 INFO L355 BasicCegarLoop]: trace histogram [104, 93, 92, 92, 92, 92, 92, 92, 92, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:29,597 INFO L408 AbstractCegarLoop]: === Iteration 40 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:29,597 INFO L82 PathProgramCache]: Analyzing trace with hash 564591181, now seen corresponding path program 22 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 [2018-04-11 22:16:29,603 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:29,774 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 41195 backedges. 12012 proven. 594 refuted. 0 times theorem prover too weak. 28589 trivial. 0 not checked. [2018-04-11 22:16:30,854 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 41195 backedges. 12012 proven. 594 refuted. 0 times theorem prover too weak. 28589 trivial. 0 not checked. [2018-04-11 22:16:32,094 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:32,095 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 81 [2018-04-11 22:16:32,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-04-11 22:16:32,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-04-11 22:16:32,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=841, Invalid=5639, Unknown=0, NotChecked=0, Total=6480 [2018-04-11 22:16:32,096 INFO L87 Difference]: Start difference. First operand 1134 states and 1143 transitions. Second operand 81 states. [2018-04-11 22:16:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:34,639 INFO L93 Difference]: Finished difference Result 1479 states and 1498 transitions. [2018-04-11 22:16:34,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-04-11 22:16:34,640 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 1070 [2018-04-11 22:16:34,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:34,643 INFO L225 Difference]: With dead ends: 1479 [2018-04-11 22:16:34,643 INFO L226 Difference]: Without dead ends: 1272 [2018-04-11 22:16:34,644 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2213 GetRequests, 2035 SyntacticMatches, 25 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6314 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3632, Invalid=20238, Unknown=0, NotChecked=0, Total=23870 [2018-04-11 22:16:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2018-04-11 22:16:34,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1261. [2018-04-11 22:16:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2018-04-11 22:16:34,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1270 transitions. [2018-04-11 22:16:34,666 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1270 transitions. Word has length 1070 [2018-04-11 22:16:34,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:34,666 INFO L459 AbstractCegarLoop]: Abstraction has 1261 states and 1270 transitions. [2018-04-11 22:16:34,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-04-11 22:16:34,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1270 transitions. [2018-04-11 22:16:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1199 [2018-04-11 22:16:34,674 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:34,675 INFO L355 BasicCegarLoop]: trace histogram [117, 105, 104, 104, 104, 104, 104, 104, 104, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:34,675 INFO L408 AbstractCegarLoop]: === Iteration 41 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:34,675 INFO L82 PathProgramCache]: Analyzing trace with hash -678084135, now seen corresponding path program 23 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 [2018-04-11 22:16:34,681 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:34,867 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 52464 backedges. 22256 proven. 618 refuted. 0 times theorem prover too weak. 29590 trivial. 0 not checked. [2018-04-11 22:16:36,000 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 52464 backedges. 22256 proven. 618 refuted. 0 times theorem prover too weak. 29590 trivial. 0 not checked. [2018-04-11 22:16:37,416 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:37,416 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 78 [2018-04-11 22:16:37,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-04-11 22:16:37,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-04-11 22:16:37,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=808, Invalid=5198, Unknown=0, NotChecked=0, Total=6006 [2018-04-11 22:16:37,418 INFO L87 Difference]: Start difference. First operand 1261 states and 1270 transitions. Second operand 78 states. [2018-04-11 22:16:38,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:38,693 INFO L93 Difference]: Finished difference Result 1484 states and 1502 transitions. [2018-04-11 22:16:38,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-04-11 22:16:38,693 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 1198 [2018-04-11 22:16:38,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:38,696 INFO L225 Difference]: With dead ends: 1484 [2018-04-11 22:16:38,696 INFO L226 Difference]: Without dead ends: 1271 [2018-04-11 22:16:38,698 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2454 GetRequests, 2295 SyntacticMatches, 25 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7074 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2882, Invalid=15478, Unknown=0, NotChecked=0, Total=18360 [2018-04-11 22:16:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2018-04-11 22:16:38,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1261. [2018-04-11 22:16:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2018-04-11 22:16:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1268 transitions. [2018-04-11 22:16:38,719 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1268 transitions. Word has length 1198 [2018-04-11 22:16:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:38,720 INFO L459 AbstractCegarLoop]: Abstraction has 1261 states and 1268 transitions. [2018-04-11 22:16:38,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-04-11 22:16:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1268 transitions. [2018-04-11 22:16:38,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1208 [2018-04-11 22:16:38,728 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:38,728 INFO L355 BasicCegarLoop]: trace histogram [118, 106, 105, 105, 105, 105, 105, 105, 105, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:38,728 INFO L408 AbstractCegarLoop]: === Iteration 42 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:38,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1847718463, now seen corresponding path program 24 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 [2018-04-11 22:16:38,734 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:38,923 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 53427 backedges. 13853 proven. 708 refuted. 0 times theorem prover too weak. 38866 trivial. 0 not checked. [2018-04-11 22:16:40,202 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 53427 backedges. 13853 proven. 708 refuted. 0 times theorem prover too weak. 38866 trivial. 0 not checked. [2018-04-11 22:16:42,072 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:42,073 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 87 [2018-04-11 22:16:42,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-04-11 22:16:42,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-04-11 22:16:42,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=961, Invalid=6521, Unknown=0, NotChecked=0, Total=7482 [2018-04-11 22:16:42,076 INFO L87 Difference]: Start difference. First operand 1261 states and 1268 transitions. Second operand 87 states. [2018-04-11 22:16:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:45,028 INFO L93 Difference]: Finished difference Result 1605 states and 1620 transitions. [2018-04-11 22:16:45,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-04-11 22:16:45,062 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 1207 [2018-04-11 22:16:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:45,065 INFO L225 Difference]: With dead ends: 1605 [2018-04-11 22:16:45,065 INFO L226 Difference]: Without dead ends: 1408 [2018-04-11 22:16:45,067 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2493 GetRequests, 2301 SyntacticMatches, 27 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7394 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4177, Invalid=23545, Unknown=0, NotChecked=0, Total=27722 [2018-04-11 22:16:45,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2018-04-11 22:16:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1397. [2018-04-11 22:16:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2018-04-11 22:16:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1404 transitions. [2018-04-11 22:16:45,092 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1404 transitions. Word has length 1207 [2018-04-11 22:16:45,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:45,092 INFO L459 AbstractCegarLoop]: Abstraction has 1397 states and 1404 transitions. [2018-04-11 22:16:45,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-04-11 22:16:45,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1404 transitions. [2018-04-11 22:16:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1345 [2018-04-11 22:16:45,102 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:45,102 INFO L355 BasicCegarLoop]: trace histogram [132, 119, 118, 118, 118, 118, 118, 118, 118, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:45,103 INFO L408 AbstractCegarLoop]: === Iteration 43 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:45,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1724457779, now seen corresponding path program 25 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 [2018-04-11 22:16:45,108 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:45,322 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:46,705 INFO L134 CoverageAnalysis]: Checked inductivity of 67252 backedges. 26645 proven. 728 refuted. 0 times theorem prover too weak. 39879 trivial. 0 not checked. [2018-04-11 22:16:46,705 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 67252 backedges. 26645 proven. 728 refuted. 0 times theorem prover too weak. 39879 trivial. 0 not checked. [2018-04-11 22:16:48,346 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:48,347 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 84 [2018-04-11 22:16:48,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-04-11 22:16:48,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-04-11 22:16:48,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=926, Invalid=6046, Unknown=0, NotChecked=0, Total=6972 [2018-04-11 22:16:48,348 INFO L87 Difference]: Start difference. First operand 1397 states and 1404 transitions. Second operand 84 states. [2018-04-11 22:16:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:49,662 INFO L93 Difference]: Finished difference Result 1610 states and 1623 transitions. [2018-04-11 22:16:49,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-11 22:16:49,662 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 1344 [2018-04-11 22:16:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:49,666 INFO L225 Difference]: With dead ends: 1610 [2018-04-11 22:16:49,666 INFO L226 Difference]: Without dead ends: 1407 [2018-04-11 22:16:49,668 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2751 GetRequests, 2579 SyntacticMatches, 27 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8333 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3342, Invalid=18120, Unknown=0, NotChecked=0, Total=21462 [2018-04-11 22:16:49,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2018-04-11 22:16:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1397. [2018-04-11 22:16:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2018-04-11 22:16:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1402 transitions. [2018-04-11 22:16:49,694 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1402 transitions. Word has length 1344 [2018-04-11 22:16:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:49,694 INFO L459 AbstractCegarLoop]: Abstraction has 1397 states and 1402 transitions. [2018-04-11 22:16:49,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-04-11 22:16:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1402 transitions. [2018-04-11 22:16:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1354 [2018-04-11 22:16:49,704 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:49,705 INFO L355 BasicCegarLoop]: trace histogram [133, 120, 119, 119, 119, 119, 119, 119, 119, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:49,705 INFO L408 AbstractCegarLoop]: === Iteration 44 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:49,705 INFO L82 PathProgramCache]: Analyzing trace with hash 426345805, now seen corresponding path program 26 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 [2018-04-11 22:16:49,710 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:49,925 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 68343 backedges. 15823 proven. 832 refuted. 0 times theorem prover too weak. 51688 trivial. 0 not checked. [2018-04-11 22:16:51,424 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:16:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 68343 backedges. 15823 proven. 832 refuted. 0 times theorem prover too weak. 51688 trivial. 0 not checked. [2018-04-11 22:16:53,241 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:16:53,242 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 93 [2018-04-11 22:16:53,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-04-11 22:16:53,243 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-04-11 22:16:53,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1089, Invalid=7467, Unknown=0, NotChecked=0, Total=8556 [2018-04-11 22:16:53,244 INFO L87 Difference]: Start difference. First operand 1397 states and 1402 transitions. Second operand 93 states. [2018-04-11 22:16:56,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:16:56,196 INFO L93 Difference]: Finished difference Result 1740 states and 1751 transitions. [2018-04-11 22:16:56,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-04-11 22:16:56,196 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 1353 [2018-04-11 22:16:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:16:56,199 INFO L225 Difference]: With dead ends: 1740 [2018-04-11 22:16:56,199 INFO L226 Difference]: Without dead ends: 1553 [2018-04-11 22:16:56,201 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2791 GetRequests, 2585 SyntacticMatches, 29 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8559 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4760, Invalid=27102, Unknown=0, NotChecked=0, Total=31862 [2018-04-11 22:16:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2018-04-11 22:16:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1542. [2018-04-11 22:16:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2018-04-11 22:16:56,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 1547 transitions. [2018-04-11 22:16:56,229 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 1547 transitions. Word has length 1353 [2018-04-11 22:16:56,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:16:56,229 INFO L459 AbstractCegarLoop]: Abstraction has 1542 states and 1547 transitions. [2018-04-11 22:16:56,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-04-11 22:16:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 1547 transitions. [2018-04-11 22:16:56,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1500 [2018-04-11 22:16:56,241 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:16:56,241 INFO L355 BasicCegarLoop]: trace histogram [148, 134, 133, 133, 133, 133, 133, 133, 133, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:16:56,242 INFO L408 AbstractCegarLoop]: === Iteration 45 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:16:56,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1853747673, now seen corresponding path program 27 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:16:56,248 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:16:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:16:56,485 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:16:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 85099 backedges. 31548 proven. 847 refuted. 0 times theorem prover too weak. 52704 trivial. 0 not checked. [2018-04-11 22:16:58,104 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:17:00,028 INFO L134 CoverageAnalysis]: Checked inductivity of 85099 backedges. 31548 proven. 847 refuted. 0 times theorem prover too weak. 52704 trivial. 0 not checked. [2018-04-11 22:17:00,049 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:17:00,049 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 90 [2018-04-11 22:17:00,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-04-11 22:17:00,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-04-11 22:17:00,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1052, Invalid=6958, Unknown=0, NotChecked=0, Total=8010 [2018-04-11 22:17:00,051 INFO L87 Difference]: Start difference. First operand 1542 states and 1547 transitions. Second operand 90 states. [2018-04-11 22:17:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:17:01,622 INFO L93 Difference]: Finished difference Result 1749 states and 1757 transitions. [2018-04-11 22:17:01,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-04-11 22:17:01,623 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 1499 [2018-04-11 22:17:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:17:01,626 INFO L225 Difference]: With dead ends: 1749 [2018-04-11 22:17:01,627 INFO L226 Difference]: Without dead ends: 1556 [2018-04-11 22:17:01,628 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3066 GetRequests, 2881 SyntacticMatches, 29 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9695 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3836, Invalid=20970, Unknown=0, NotChecked=0, Total=24806 [2018-04-11 22:17:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-04-11 22:17:01,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1542. [2018-04-11 22:17:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2018-04-11 22:17:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 1545 transitions. [2018-04-11 22:17:01,661 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 1545 transitions. Word has length 1499 [2018-04-11 22:17:01,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:17:01,661 INFO L459 AbstractCegarLoop]: Abstraction has 1542 states and 1545 transitions. [2018-04-11 22:17:01,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-04-11 22:17:01,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 1545 transitions. [2018-04-11 22:17:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1509 [2018-04-11 22:17:01,673 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:17:01,674 INFO L355 BasicCegarLoop]: trace histogram [149, 135, 134, 134, 134, 134, 134, 134, 134, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:17:01,674 INFO L408 AbstractCegarLoop]: === Iteration 46 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:17:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1111794239, now seen corresponding path program 28 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:17:01,680 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:17:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:17:01,918 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:17:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 86327 backedges. 16870 proven. 990 refuted. 0 times theorem prover too weak. 68467 trivial. 0 not checked. [2018-04-11 22:17:02,896 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:17:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 86327 backedges. 16870 proven. 990 refuted. 0 times theorem prover too weak. 68467 trivial. 0 not checked. [2018-04-11 22:17:04,644 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:17:04,645 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-11 22:17:04,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-11 22:17:04,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-11 22:17:04,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-04-11 22:17:04,647 INFO L87 Difference]: Start difference. First operand 1542 states and 1545 transitions. Second operand 64 states. [2018-04-11 22:17:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:17:10,142 INFO L93 Difference]: Finished difference Result 1755 states and 1789 transitions. [2018-04-11 22:17:10,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-11 22:17:10,142 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 1508 [2018-04-11 22:17:10,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:17:10,146 INFO L225 Difference]: With dead ends: 1755 [2018-04-11 22:17:10,146 INFO L226 Difference]: Without dead ends: 1754 [2018-04-11 22:17:10,147 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3103 GetRequests, 2967 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-04-11 22:17:10,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2018-04-11 22:17:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1685. [2018-04-11 22:17:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1685 states. [2018-04-11 22:17:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 1719 transitions. [2018-04-11 22:17:10,178 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 1719 transitions. Word has length 1508 [2018-04-11 22:17:10,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:17:10,179 INFO L459 AbstractCegarLoop]: Abstraction has 1685 states and 1719 transitions. [2018-04-11 22:17:10,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-11 22:17:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 1719 transitions. [2018-04-11 22:17:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1510 [2018-04-11 22:17:10,191 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:17:10,191 INFO L355 BasicCegarLoop]: trace histogram [149, 135, 135, 134, 134, 134, 134, 134, 134, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:17:10,191 INFO L408 AbstractCegarLoop]: === Iteration 47 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:17:10,192 INFO L82 PathProgramCache]: Analyzing trace with hash -105882928, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:17:10,198 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:17:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:17:10,444 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:17:10,446 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:17:10,447 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:17:10,449 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:17:10,450 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:17:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 86461 backedges. 17059 proven. 1005 refuted. 0 times theorem prover too weak. 68397 trivial. 0 not checked. [2018-04-11 22:17:14,277 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:17:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 86461 backedges. 17059 proven. 1005 refuted. 0 times theorem prover too weak. 68397 trivial. 0 not checked. [2018-04-11 22:17:16,696 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:17:16,697 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 70 [2018-04-11 22:17:16,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-04-11 22:17:16,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-04-11 22:17:16,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=719, Invalid=4251, Unknown=0, NotChecked=0, Total=4970 [2018-04-11 22:17:16,700 INFO L87 Difference]: Start difference. First operand 1685 states and 1719 transitions. Second operand 71 states. [2018-04-11 22:17:20,850 WARN L151 SmtUtils]: Spent 101ms on a formula simplification. DAG size of input: 113 DAG size of output 26 [2018-04-11 22:17:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:17:25,889 INFO L93 Difference]: Finished difference Result 1735 states and 1769 transitions. [2018-04-11 22:17:25,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-04-11 22:17:25,890 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 1509 [2018-04-11 22:17:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:17:25,894 INFO L225 Difference]: With dead ends: 1735 [2018-04-11 22:17:25,894 INFO L226 Difference]: Without dead ends: 1734 [2018-04-11 22:17:25,895 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3110 GetRequests, 2922 SyntacticMatches, 27 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5948 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=5718, Invalid=20688, Unknown=0, NotChecked=0, Total=26406 [2018-04-11 22:17:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2018-04-11 22:17:25,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1686. [2018-04-11 22:17:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2018-04-11 22:17:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 1705 transitions. [2018-04-11 22:17:25,924 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 1705 transitions. Word has length 1509 [2018-04-11 22:17:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:17:25,925 INFO L459 AbstractCegarLoop]: Abstraction has 1686 states and 1705 transitions. [2018-04-11 22:17:25,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-04-11 22:17:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 1705 transitions. [2018-04-11 22:17:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1528 [2018-04-11 22:17:25,937 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:17:25,937 INFO L355 BasicCegarLoop]: trace histogram [149, 134, 134, 134, 134, 134, 134, 134, 134, 16, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:17:25,937 INFO L408 AbstractCegarLoop]: === Iteration 48 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:17:25,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1080615976, now seen corresponding path program 7 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:17:25,943 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:17:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:17:26,188 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:17:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 86349 backedges. 17915 proven. 975 refuted. 0 times theorem prover too weak. 67459 trivial. 0 not checked. [2018-04-11 22:17:27,947 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:17:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 86349 backedges. 17915 proven. 975 refuted. 0 times theorem prover too weak. 67459 trivial. 0 not checked. [2018-04-11 22:17:30,023 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:17:30,024 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 96 [2018-04-11 22:17:30,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-04-11 22:17:30,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-04-11 22:17:30,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1186, Invalid=7934, Unknown=0, NotChecked=0, Total=9120 [2018-04-11 22:17:30,026 INFO L87 Difference]: Start difference. First operand 1686 states and 1705 transitions. Second operand 96 states. [2018-04-11 22:17:32,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:17:32,047 INFO L93 Difference]: Finished difference Result 2022 states and 2059 transitions. [2018-04-11 22:17:32,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-04-11 22:17:32,047 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 1527 [2018-04-11 22:17:32,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:17:32,051 INFO L225 Difference]: With dead ends: 2022 [2018-04-11 22:17:32,052 INFO L226 Difference]: Without dead ends: 1696 [2018-04-11 22:17:32,054 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3127 GetRequests, 2929 SyntacticMatches, 31 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11160 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4364, Invalid=24028, Unknown=0, NotChecked=0, Total=28392 [2018-04-11 22:17:32,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2018-04-11 22:17:32,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1686. [2018-04-11 22:17:32,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2018-04-11 22:17:32,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 1704 transitions. [2018-04-11 22:17:32,082 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 1704 transitions. Word has length 1527 [2018-04-11 22:17:32,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:17:32,082 INFO L459 AbstractCegarLoop]: Abstraction has 1686 states and 1704 transitions. [2018-04-11 22:17:32,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-04-11 22:17:32,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 1704 transitions. [2018-04-11 22:17:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1537 [2018-04-11 22:17:32,094 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:17:32,095 INFO L355 BasicCegarLoop]: trace histogram [150, 135, 135, 135, 135, 135, 135, 135, 135, 16, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:17:32,095 INFO L408 AbstractCegarLoop]: === Iteration 49 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:17:32,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1203618904, now seen corresponding path program 8 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:17:32,101 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:17:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:17:32,345 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:17:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 87585 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 86505 trivial. 0 not checked. [2018-04-11 22:17:33,240 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:17:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 87585 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 86505 trivial. 0 not checked. [2018-04-11 22:17:34,473 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:17:34,473 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2018-04-11 22:17:34,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-11 22:17:34,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-11 22:17:34,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2018-04-11 22:17:34,475 INFO L87 Difference]: Start difference. First operand 1686 states and 1704 transitions. Second operand 64 states. [2018-04-11 22:17:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:17:35,752 INFO L93 Difference]: Finished difference Result 1876 states and 1926 transitions. [2018-04-11 22:17:35,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-11 22:17:35,752 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 1536 [2018-04-11 22:17:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:17:35,758 INFO L225 Difference]: With dead ends: 1876 [2018-04-11 22:17:35,759 INFO L226 Difference]: Without dead ends: 1856 [2018-04-11 22:17:35,761 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3131 GetRequests, 3009 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3257 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4867, Invalid=10385, Unknown=0, NotChecked=0, Total=15252 [2018-04-11 22:17:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2018-04-11 22:17:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1846. [2018-04-11 22:17:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1846 states. [2018-04-11 22:17:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 1880 transitions. [2018-04-11 22:17:35,800 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 1880 transitions. Word has length 1536 [2018-04-11 22:17:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:17:35,801 INFO L459 AbstractCegarLoop]: Abstraction has 1846 states and 1880 transitions. [2018-04-11 22:17:35,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-11 22:17:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 1880 transitions. [2018-04-11 22:17:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1653 [2018-04-11 22:17:35,816 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:17:35,816 INFO L355 BasicCegarLoop]: trace histogram [165, 151, 150, 150, 150, 150, 150, 150, 150, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:17:35,816 INFO L408 AbstractCegarLoop]: === Iteration 50 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:17:35,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1546723903, now seen corresponding path program 29 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:17:35,823 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:17:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:17:36,137 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:17:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 107199 backedges. 37842 proven. 966 refuted. 0 times theorem prover too weak. 68391 trivial. 0 not checked. [2018-04-11 22:17:37,999 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:17:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 107199 backedges. 37842 proven. 966 refuted. 0 times theorem prover too weak. 68391 trivial. 0 not checked. [2018-04-11 22:17:40,018 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:17:40,019 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 99 [2018-04-11 22:17:40,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-04-11 22:17:40,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-04-11 22:17:40,021 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=8477, Unknown=0, NotChecked=0, Total=9702 [2018-04-11 22:17:40,021 INFO L87 Difference]: Start difference. First operand 1846 states and 1880 transitions. Second operand 99 states. [2018-04-11 22:17:43,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:17:43,298 INFO L93 Difference]: Finished difference Result 2489 states and 2557 transitions. [2018-04-11 22:17:43,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-04-11 22:17:43,319 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 1652 [2018-04-11 22:17:43,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:17:43,323 INFO L225 Difference]: With dead ends: 2489 [2018-04-11 22:17:43,324 INFO L226 Difference]: Without dead ends: 2008 [2018-04-11 22:17:43,329 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3395 GetRequests, 3175 SyntacticMatches, 31 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9809 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5381, Invalid=30909, Unknown=0, NotChecked=0, Total=36290 [2018-04-11 22:17:43,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2018-04-11 22:17:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2000. [2018-04-11 22:17:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2000 states. [2018-04-11 22:17:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2033 transitions. [2018-04-11 22:17:43,380 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2033 transitions. Word has length 1652 [2018-04-11 22:17:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:17:43,381 INFO L459 AbstractCegarLoop]: Abstraction has 2000 states and 2033 transitions. [2018-04-11 22:17:43,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-04-11 22:17:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2033 transitions. [2018-04-11 22:17:43,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1817 [2018-04-11 22:17:43,398 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:17:43,399 INFO L355 BasicCegarLoop]: trace histogram [182, 167, 166, 166, 166, 166, 166, 166, 166, 16, 16, 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] [2018-04-11 22:17:43,399 INFO L408 AbstractCegarLoop]: === Iteration 51 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:17:43,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1756458317, now seen corresponding path program 30 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:17:43,405 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:17:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:17:43,712 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:17:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 130998 backedges. 42550 proven. 1110 refuted. 0 times theorem prover too weak. 87338 trivial. 0 not checked. [2018-04-11 22:17:45,842 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:17:48,150 INFO L134 CoverageAnalysis]: Checked inductivity of 130998 backedges. 42550 proven. 1110 refuted. 0 times theorem prover too weak. 87338 trivial. 0 not checked. [2018-04-11 22:17:48,171 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:17:48,171 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 105 [2018-04-11 22:17:48,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-04-11 22:17:48,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-04-11 22:17:48,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1369, Invalid=9551, Unknown=0, NotChecked=0, Total=10920 [2018-04-11 22:17:48,174 INFO L87 Difference]: Start difference. First operand 2000 states and 2033 transitions. Second operand 105 states. [2018-04-11 22:17:51,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:17:51,784 INFO L93 Difference]: Finished difference Result 2645 states and 2712 transitions. [2018-04-11 22:17:51,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-04-11 22:17:51,784 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 1816 [2018-04-11 22:17:51,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:17:51,790 INFO L225 Difference]: With dead ends: 2645 [2018-04-11 22:17:51,790 INFO L226 Difference]: Without dead ends: 2174 [2018-04-11 22:17:51,796 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3729 GetRequests, 3495 SyntacticMatches, 33 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11144 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6040, Invalid=34966, Unknown=0, NotChecked=0, Total=41006 [2018-04-11 22:17:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2018-04-11 22:17:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2163. [2018-04-11 22:17:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2163 states. [2018-04-11 22:17:51,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2196 transitions. [2018-04-11 22:17:51,835 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2196 transitions. Word has length 1816 [2018-04-11 22:17:51,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:17:51,836 INFO L459 AbstractCegarLoop]: Abstraction has 2163 states and 2196 transitions. [2018-04-11 22:17:51,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-04-11 22:17:51,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2196 transitions. [2018-04-11 22:17:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1981 [2018-04-11 22:17:51,856 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:17:51,857 INFO L355 BasicCegarLoop]: trace histogram [199, 183, 182, 182, 182, 182, 182, 182, 182, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:17:51,857 INFO L408 AbstractCegarLoop]: === Iteration 52 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:17:51,857 INFO L82 PathProgramCache]: Analyzing trace with hash 190539481, now seen corresponding path program 31 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:17:51,864 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:17:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:17:52,171 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:17:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 157185 backedges. 65260 proven. 1112 refuted. 0 times theorem prover too weak. 90813 trivial. 0 not checked. [2018-04-11 22:17:54,469 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:17:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 157185 backedges. 65260 proven. 1112 refuted. 0 times theorem prover too weak. 90813 trivial. 0 not checked. [2018-04-11 22:17:57,098 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:17:57,099 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 102 [2018-04-11 22:17:57,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-04-11 22:17:57,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-04-11 22:17:57,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=8974, Unknown=0, NotChecked=0, Total=10302 [2018-04-11 22:17:57,101 INFO L87 Difference]: Start difference. First operand 2163 states and 2196 transitions. Second operand 102 states. [2018-04-11 22:17:59,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:17:59,034 INFO L93 Difference]: Finished difference Result 2650 states and 2728 transitions. [2018-04-11 22:17:59,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-04-11 22:17:59,034 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 1980 [2018-04-11 22:17:59,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:17:59,039 INFO L225 Difference]: With dead ends: 2650 [2018-04-11 22:17:59,039 INFO L226 Difference]: Without dead ends: 2173 [2018-04-11 22:17:59,046 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4038 GetRequests, 3827 SyntacticMatches, 33 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12728 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4926, Invalid=27294, Unknown=0, NotChecked=0, Total=32220 [2018-04-11 22:17:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2173 states. [2018-04-11 22:17:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2173 to 2163. [2018-04-11 22:17:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2163 states. [2018-04-11 22:17:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2194 transitions. [2018-04-11 22:17:59,092 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2194 transitions. Word has length 1980 [2018-04-11 22:17:59,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:17:59,093 INFO L459 AbstractCegarLoop]: Abstraction has 2163 states and 2194 transitions. [2018-04-11 22:17:59,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-04-11 22:17:59,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2194 transitions. [2018-04-11 22:17:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1990 [2018-04-11 22:17:59,111 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:17:59,112 INFO L355 BasicCegarLoop]: trace histogram [200, 184, 183, 183, 183, 183, 183, 183, 183, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:17:59,112 INFO L408 AbstractCegarLoop]: === Iteration 53 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:17:59,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1667639103, now seen corresponding path program 32 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:17:59,118 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:17:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:17:59,447 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:18:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 158858 backedges. 47531 proven. 1264 refuted. 0 times theorem prover too weak. 110063 trivial. 0 not checked. [2018-04-11 22:18:01,890 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:18:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 158858 backedges. 47531 proven. 1264 refuted. 0 times theorem prover too weak. 110063 trivial. 0 not checked. [2018-04-11 22:18:04,746 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:18:04,753 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 111 [2018-04-11 22:18:04,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-04-11 22:18:04,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-04-11 22:18:04,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1521, Invalid=10689, Unknown=0, NotChecked=0, Total=12210 [2018-04-11 22:18:04,755 INFO L87 Difference]: Start difference. First operand 2163 states and 2194 transitions. Second operand 111 states. [2018-04-11 22:18:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:18:08,378 INFO L93 Difference]: Finished difference Result 2807 states and 2870 transitions. [2018-04-11 22:18:08,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-04-11 22:18:08,378 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 1989 [2018-04-11 22:18:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:18:08,383 INFO L225 Difference]: With dead ends: 2807 [2018-04-11 22:18:08,383 INFO L226 Difference]: Without dead ends: 2346 [2018-04-11 22:18:08,392 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4081 GetRequests, 3833 SyntacticMatches, 35 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12564 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=6737, Invalid=39273, Unknown=0, NotChecked=0, Total=46010 [2018-04-11 22:18:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2018-04-11 22:18:08,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2335. [2018-04-11 22:18:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2335 states. [2018-04-11 22:18:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 2366 transitions. [2018-04-11 22:18:08,442 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 2366 transitions. Word has length 1989 [2018-04-11 22:18:08,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:18:08,442 INFO L459 AbstractCegarLoop]: Abstraction has 2335 states and 2366 transitions. [2018-04-11 22:18:08,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-04-11 22:18:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 2366 transitions. [2018-04-11 22:18:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2163 [2018-04-11 22:18:08,465 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:18:08,466 INFO L355 BasicCegarLoop]: trace histogram [218, 201, 200, 200, 200, 200, 200, 200, 200, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:18:08,466 INFO L408 AbstractCegarLoop]: === Iteration 54 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:18:08,466 INFO L82 PathProgramCache]: Analyzing trace with hash 368228813, now seen corresponding path program 33 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:18:08,472 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:18:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:18:08,807 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:18:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 189407 backedges. 74491 proven. 1258 refuted. 0 times theorem prover too weak. 113658 trivial. 0 not checked. [2018-04-11 22:18:11,435 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:18:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 189407 backedges. 74491 proven. 1258 refuted. 0 times theorem prover too weak. 113658 trivial. 0 not checked. [2018-04-11 22:18:14,457 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:18:14,458 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 108 [2018-04-11 22:18:14,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-04-11 22:18:14,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-04-11 22:18:14,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1478, Invalid=10078, Unknown=0, NotChecked=0, Total=11556 [2018-04-11 22:18:14,460 INFO L87 Difference]: Start difference. First operand 2335 states and 2366 transitions. Second operand 108 states. [2018-04-11 22:18:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:18:16,516 INFO L93 Difference]: Finished difference Result 2812 states and 2885 transitions. [2018-04-11 22:18:16,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-04-11 22:18:16,553 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 2162 [2018-04-11 22:18:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:18:16,557 INFO L225 Difference]: With dead ends: 2812 [2018-04-11 22:18:16,557 INFO L226 Difference]: Without dead ends: 2345 [2018-04-11 22:18:16,563 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4407 GetRequests, 4183 SyntacticMatches, 35 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14399 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5522, Invalid=30768, Unknown=0, NotChecked=0, Total=36290 [2018-04-11 22:18:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2018-04-11 22:18:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 2335. [2018-04-11 22:18:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2335 states. [2018-04-11 22:18:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 2364 transitions. [2018-04-11 22:18:16,632 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 2364 transitions. Word has length 2162 [2018-04-11 22:18:16,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:18:16,633 INFO L459 AbstractCegarLoop]: Abstraction has 2335 states and 2364 transitions. [2018-04-11 22:18:16,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-04-11 22:18:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 2364 transitions. [2018-04-11 22:18:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2172 [2018-04-11 22:18:16,669 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:18:16,670 INFO L355 BasicCegarLoop]: trace histogram [219, 202, 201, 201, 201, 201, 201, 201, 201, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:18:16,670 INFO L408 AbstractCegarLoop]: === Iteration 55 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:18:16,671 INFO L82 PathProgramCache]: Analyzing trace with hash -400648115, now seen corresponding path program 34 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:18:16,679 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:18:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:18:17,100 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:18:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 191244 backedges. 52785 proven. 1428 refuted. 0 times theorem prover too weak. 137031 trivial. 0 not checked. [2018-04-11 22:18:19,889 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:18:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 191244 backedges. 52785 proven. 1428 refuted. 0 times theorem prover too weak. 137031 trivial. 0 not checked. [2018-04-11 22:18:22,952 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:18:22,953 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 117 [2018-04-11 22:18:22,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-04-11 22:18:22,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-04-11 22:18:22,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1681, Invalid=11891, Unknown=0, NotChecked=0, Total=13572 [2018-04-11 22:18:22,955 INFO L87 Difference]: Start difference. First operand 2335 states and 2364 transitions. Second operand 117 states. [2018-04-11 22:18:27,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:18:27,232 INFO L93 Difference]: Finished difference Result 2978 states and 3037 transitions. [2018-04-11 22:18:27,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-04-11 22:18:27,232 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 2171 [2018-04-11 22:18:27,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:18:27,238 INFO L225 Difference]: With dead ends: 2978 [2018-04-11 22:18:27,238 INFO L226 Difference]: Without dead ends: 2527 [2018-04-11 22:18:27,247 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4451 GetRequests, 4189 SyntacticMatches, 37 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14069 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=7472, Invalid=43830, Unknown=0, NotChecked=0, Total=51302 [2018-04-11 22:18:27,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2018-04-11 22:18:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2516. [2018-04-11 22:18:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2018-04-11 22:18:27,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 2545 transitions. [2018-04-11 22:18:27,311 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 2545 transitions. Word has length 2171 [2018-04-11 22:18:27,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:18:27,312 INFO L459 AbstractCegarLoop]: Abstraction has 2516 states and 2545 transitions. [2018-04-11 22:18:27,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-04-11 22:18:27,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 2545 transitions. [2018-04-11 22:18:27,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2354 [2018-04-11 22:18:27,348 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:18:27,348 INFO L355 BasicCegarLoop]: trace histogram [238, 220, 219, 219, 219, 219, 219, 219, 219, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:18:27,349 INFO L408 AbstractCegarLoop]: === Iteration 56 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:18:27,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2062022361, now seen corresponding path program 35 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:18:27,357 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:18:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:18:27,762 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:18:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 226638 backedges. 84488 proven. 1413 refuted. 0 times theorem prover too weak. 140737 trivial. 0 not checked. [2018-04-11 22:18:30,802 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:18:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 226638 backedges. 84488 proven. 1413 refuted. 0 times theorem prover too weak. 140737 trivial. 0 not checked. [2018-04-11 22:18:34,247 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:18:34,248 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 114 [2018-04-11 22:18:34,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-04-11 22:18:34,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-04-11 22:18:34,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1636, Invalid=11246, Unknown=0, NotChecked=0, Total=12882 [2018-04-11 22:18:34,250 INFO L87 Difference]: Start difference. First operand 2516 states and 2545 transitions. Second operand 114 states. [2018-04-11 22:18:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:18:36,366 INFO L93 Difference]: Finished difference Result 2983 states and 3051 transitions. [2018-04-11 22:18:36,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-04-11 22:18:36,366 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 2353 [2018-04-11 22:18:36,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:18:36,370 INFO L225 Difference]: With dead ends: 2983 [2018-04-11 22:18:36,370 INFO L226 Difference]: Without dead ends: 2526 [2018-04-11 22:18:36,375 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4794 GetRequests, 4557 SyntacticMatches, 37 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16173 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6152, Invalid=34450, Unknown=0, NotChecked=0, Total=40602 [2018-04-11 22:18:36,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2018-04-11 22:18:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2516. [2018-04-11 22:18:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2018-04-11 22:18:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 2543 transitions. [2018-04-11 22:18:36,433 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 2543 transitions. Word has length 2353 [2018-04-11 22:18:36,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:18:36,433 INFO L459 AbstractCegarLoop]: Abstraction has 2516 states and 2543 transitions. [2018-04-11 22:18:36,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-04-11 22:18:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 2543 transitions. [2018-04-11 22:18:36,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2363 [2018-04-11 22:18:36,460 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:18:36,461 INFO L355 BasicCegarLoop]: trace histogram [239, 221, 220, 220, 220, 220, 220, 220, 220, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:18:36,461 INFO L408 AbstractCegarLoop]: === Iteration 57 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:18:36,461 INFO L82 PathProgramCache]: Analyzing trace with hash 976177345, now seen corresponding path program 36 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:18:36,467 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:18:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:18:36,855 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:18:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 228648 backedges. 58312 proven. 1602 refuted. 0 times theorem prover too weak. 168734 trivial. 0 not checked. [2018-04-11 22:18:40,045 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:18:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 228648 backedges. 58312 proven. 1602 refuted. 0 times theorem prover too weak. 168734 trivial. 0 not checked. [2018-04-11 22:18:43,530 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:18:43,531 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 123 [2018-04-11 22:18:43,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-04-11 22:18:43,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-04-11 22:18:43,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1849, Invalid=13157, Unknown=0, NotChecked=0, Total=15006 [2018-04-11 22:18:43,533 INFO L87 Difference]: Start difference. First operand 2516 states and 2543 transitions. Second operand 123 states. [2018-04-11 22:18:48,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:18:48,431 INFO L93 Difference]: Finished difference Result 3158 states and 3213 transitions. [2018-04-11 22:18:48,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-04-11 22:18:48,431 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 2362 [2018-04-11 22:18:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:18:48,437 INFO L225 Difference]: With dead ends: 3158 [2018-04-11 22:18:48,437 INFO L226 Difference]: Without dead ends: 2717 [2018-04-11 22:18:48,443 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4839 GetRequests, 4563 SyntacticMatches, 39 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15659 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=8245, Invalid=48637, Unknown=0, NotChecked=0, Total=56882 [2018-04-11 22:18:48,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2018-04-11 22:18:48,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2706. [2018-04-11 22:18:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2018-04-11 22:18:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 2733 transitions. [2018-04-11 22:18:48,489 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 2733 transitions. Word has length 2362 [2018-04-11 22:18:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:18:48,490 INFO L459 AbstractCegarLoop]: Abstraction has 2706 states and 2733 transitions. [2018-04-11 22:18:48,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-04-11 22:18:48,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 2733 transitions. [2018-04-11 22:18:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2554 [2018-04-11 22:18:48,520 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:18:48,554 INFO L355 BasicCegarLoop]: trace histogram [259, 240, 239, 239, 239, 239, 239, 239, 239, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:18:48,555 INFO L408 AbstractCegarLoop]: === Iteration 58 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:18:48,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1201773005, now seen corresponding path program 37 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:18:48,562 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:18:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:18:48,961 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:18:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 269397 backedges. 95278 proven. 1577 refuted. 0 times theorem prover too weak. 172542 trivial. 0 not checked. [2018-04-11 22:18:52,442 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:18:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 269397 backedges. 95278 proven. 1577 refuted. 0 times theorem prover too weak. 172542 trivial. 0 not checked. [2018-04-11 22:18:56,348 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:18:56,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 120 [2018-04-11 22:18:56,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-04-11 22:18:56,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-04-11 22:18:56,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1802, Invalid=12478, Unknown=0, NotChecked=0, Total=14280 [2018-04-11 22:18:56,351 INFO L87 Difference]: Start difference. First operand 2706 states and 2733 transitions. Second operand 120 states. [2018-04-11 22:18:59,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:18:59,011 INFO L93 Difference]: Finished difference Result 3163 states and 3226 transitions. [2018-04-11 22:18:59,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-04-11 22:18:59,011 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 2553 [2018-04-11 22:18:59,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:18:59,015 INFO L225 Difference]: With dead ends: 3163 [2018-04-11 22:18:59,015 INFO L226 Difference]: Without dead ends: 2716 [2018-04-11 22:18:59,019 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 5199 GetRequests, 4949 SyntacticMatches, 39 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18050 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6816, Invalid=38340, Unknown=0, NotChecked=0, Total=45156 [2018-04-11 22:18:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2018-04-11 22:18:59,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 2706. [2018-04-11 22:18:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2018-04-11 22:18:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 2731 transitions. [2018-04-11 22:18:59,065 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 2731 transitions. Word has length 2553 [2018-04-11 22:18:59,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:18:59,066 INFO L459 AbstractCegarLoop]: Abstraction has 2706 states and 2731 transitions. [2018-04-11 22:18:59,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-04-11 22:18:59,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 2731 transitions. [2018-04-11 22:18:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2563 [2018-04-11 22:18:59,096 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:18:59,097 INFO L355 BasicCegarLoop]: trace histogram [260, 241, 240, 240, 240, 240, 240, 240, 240, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:18:59,097 INFO L408 AbstractCegarLoop]: === Iteration 59 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:18:59,097 INFO L82 PathProgramCache]: Analyzing trace with hash -47466419, now seen corresponding path program 38 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:18:59,102 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:18:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:18:59,496 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 271589 backedges. 64112 proven. 1786 refuted. 0 times theorem prover too weak. 205691 trivial. 0 not checked. [2018-04-11 22:19:03,134 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 271589 backedges. 64112 proven. 1786 refuted. 0 times theorem prover too weak. 205691 trivial. 0 not checked. [2018-04-11 22:19:07,154 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:07,155 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 129 [2018-04-11 22:19:07,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-04-11 22:19:07,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-04-11 22:19:07,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2025, Invalid=14487, Unknown=0, NotChecked=0, Total=16512 [2018-04-11 22:19:07,158 INFO L87 Difference]: Start difference. First operand 2706 states and 2731 transitions. Second operand 129 states. [2018-04-11 22:19:12,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:12,326 INFO L93 Difference]: Finished difference Result 3347 states and 3398 transitions. [2018-04-11 22:19:12,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-04-11 22:19:12,326 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 2562 [2018-04-11 22:19:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:12,330 INFO L225 Difference]: With dead ends: 3347 [2018-04-11 22:19:12,330 INFO L226 Difference]: Without dead ends: 2916 [2018-04-11 22:19:12,335 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 5245 GetRequests, 4955 SyntacticMatches, 41 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17334 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=9056, Invalid=53694, Unknown=0, NotChecked=0, Total=62750 [2018-04-11 22:19:12,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2018-04-11 22:19:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2905. [2018-04-11 22:19:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2905 states. [2018-04-11 22:19:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 2930 transitions. [2018-04-11 22:19:12,387 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 2930 transitions. Word has length 2562 [2018-04-11 22:19:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:12,388 INFO L459 AbstractCegarLoop]: Abstraction has 2905 states and 2930 transitions. [2018-04-11 22:19:12,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-04-11 22:19:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 2930 transitions. [2018-04-11 22:19:12,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2763 [2018-04-11 22:19:12,424 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:12,425 INFO L355 BasicCegarLoop]: trace histogram [281, 261, 260, 260, 260, 260, 260, 260, 260, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:19:12,425 INFO L408 AbstractCegarLoop]: === Iteration 60 === [mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr0AssertViolationARRAY_INDEX, __U_MULTI_fArraysWithLenghtAtDeclaration_false_valid_deref_write_c__fooErr1RequiresViolation]=== [2018-04-11 22:19:12,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1257325607, now seen corresponding path program 39 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:19:12,432 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:12,863 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 318230 backedges. 106888 proven. 1750 refuted. 0 times theorem prover too weak. 209592 trivial. 0 not checked. [2018-04-11 22:19:16,886 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:16,994 WARN L148 SmtUtils]: Spent 101ms on a formula simplification that was a NOOP. DAG size: 110 [2018-04-11 22:19:17,292 WARN L148 SmtUtils]: Spent 101ms on a formula simplification that was a NOOP. DAG size: 113 [2018-04-11 22:19:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 318230 backedges. 106888 proven. 1750 refuted. 0 times theorem prover too weak. 209592 trivial. 0 not checked. [2018-04-11 22:19:21,438 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:21,438 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 126 [2018-04-11 22:19:21,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-04-11 22:19:21,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-04-11 22:19:21,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1976, Invalid=13774, Unknown=0, NotChecked=0, Total=15750 [2018-04-11 22:19:21,441 INFO L87 Difference]: Start difference. First operand 2905 states and 2930 transitions. Second operand 126 states. Received shutdown request... [2018-04-11 22:19:21,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-04-11 22:19:22,022 WARN L519 AbstractCegarLoop]: Verification canceled [2018-04-11 22:19:22,026 WARN L197 ceAbstractionStarter]: Timeout [2018-04-11 22:19:22,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.04 10:19:22 BoogieIcfgContainer [2018-04-11 22:19:22,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-11 22:19:22,027 INFO L168 Benchmark]: Toolchain (without parser) took 226710.10 ms. Allocated memory was 307.8 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 248.9 MB in the beginning and 1.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 586.4 MB. Max. memory is 5.3 GB. [2018-04-11 22:19:22,028 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 307.8 MB. Free memory is still 267.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-11 22:19:22,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.58 ms. Allocated memory is still 307.8 MB. Free memory was 248.9 MB in the beginning and 238.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-04-11 22:19:22,028 INFO L168 Benchmark]: Boogie Preprocessor took 30.49 ms. Allocated memory is still 307.8 MB. Free memory was 238.7 MB in the beginning and 236.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-04-11 22:19:22,028 INFO L168 Benchmark]: RCFGBuilder took 338.53 ms. Allocated memory was 307.8 MB in the beginning and 476.1 MB in the end (delta: 168.3 MB). Free memory was 236.6 MB in the beginning and 442.8 MB in the end (delta: -206.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 5.3 GB. [2018-04-11 22:19:22,029 INFO L168 Benchmark]: TraceAbstraction took 226141.98 ms. Allocated memory was 476.1 MB in the beginning and 2.3 GB in the end (delta: 1.8 GB). Free memory was 441.5 MB in the beginning and 1.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 610.7 MB. Max. memory is 5.3 GB. [2018-04-11 22:19:22,031 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 307.8 MB. Free memory is still 267.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 194.58 ms. Allocated memory is still 307.8 MB. Free memory was 248.9 MB in the beginning and 238.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.49 ms. Allocated memory is still 307.8 MB. Free memory was 238.7 MB in the beginning and 236.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 338.53 ms. Allocated memory was 307.8 MB in the beginning and 476.1 MB in the end (delta: 168.3 MB). Free memory was 236.6 MB in the beginning and 442.8 MB in the end (delta: -206.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 226141.98 ms. Allocated memory was 476.1 MB in the beginning and 2.3 GB in the end (delta: 1.8 GB). Free memory was 441.5 MB in the beginning and 1.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 610.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 30). Cancelled while BasicCegarLoop was constructing difference of abstraction (2905states) and interpolant automaton (currently 47 states, 126 states before enhancement), while ReachableStatesComputation was computing reachable states (365 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 23). Cancelled while BasicCegarLoop was constructing difference of abstraction (2905states) and interpolant automaton (currently 47 states, 126 states before enhancement), while ReachableStatesComputation was computing reachable states (365 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 27). Cancelled while BasicCegarLoop was constructing difference of abstraction (2905states) and interpolant automaton (currently 47 states, 126 states before enhancement), while ReachableStatesComputation was computing reachable states (365 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 18). Cancelled while BasicCegarLoop was constructing difference of abstraction (2905states) and interpolant automaton (currently 47 states, 126 states before enhancement), while ReachableStatesComputation was computing reachable states (365 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 18). Cancelled while BasicCegarLoop was constructing difference of abstraction (2905states) and interpolant automaton (currently 47 states, 126 states before enhancement), while ReachableStatesComputation was computing reachable states (365 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 18). Cancelled while BasicCegarLoop was constructing difference of abstraction (2905states) and interpolant automaton (currently 47 states, 126 states before enhancement), while ReachableStatesComputation was computing reachable states (365 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 61 locations, 6 error locations. TIMEOUT Result, 226.0s OverallTime, 60 OverallIterations, 281 TraceHistogramMax, 88.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5075 SDtfs, 18944 SDslu, 66664 SDs, 0 SdLazy, 70350 SolverSat, 4792 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103832 GetRequests, 97084 SyntacticMatches, 930 SemanticMatches, 5818 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275045 ImplicationChecksByTransitivity, 113.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2905occurred in iteration=59, 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: 1.3s AutomataMinimizationTime, 59 MinimizatonAttempts, 787 StatesRemovedByMinimization, 58 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.7s SsaConstructionTime, 6.6s SatisfiabilityAnalysisTime, 124.7s InterpolantComputationTime, 50593 NumberOfCodeBlocks, 50593 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 101066 ConstructedInterpolants, 1579 QuantifiedInterpolants, 286222556 SizeOfPredicates, 1953 NumberOfNonLiveVariables, 91787 ConjunctsInSsa, 2228 ConjunctsInUnsatCore, 120 InterpolantComputations, 15 PerfectInterpolantSequences, 6368958/6425762 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/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-11_22-19-22-037.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-11_22-19-22-037.csv Completed graceful shutdown