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/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cf7e2d-m [2018-03-29 21:23:04,835 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-03-29 21:23:04,836 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-03-29 21:23:04,850 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-03-29 21:23:04,850 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-03-29 21:23:04,851 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-03-29 21:23:04,852 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-03-29 21:23:04,854 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-03-29 21:23:04,857 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-03-29 21:23:04,857 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-03-29 21:23:04,858 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-03-29 21:23:04,859 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-03-29 21:23:04,860 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-03-29 21:23:04,861 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-03-29 21:23:04,862 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-03-29 21:23:04,864 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-03-29 21:23:04,866 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-03-29 21:23:04,868 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-03-29 21:23:04,870 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-03-29 21:23:04,871 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-03-29 21:23:04,873 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-03-29 21:23:04,879 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-03-29 21:23:04,880 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-03-29 21:23:04,880 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-03-29 21:23:04,905 INFO L110 SettingsManager]: Loading preferences was successful [2018-03-29 21:23:04,905 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-03-29 21:23:04,905 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-03-29 21:23:04,906 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-03-29 21:23:04,906 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-03-29 21:23:04,906 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-03-29 21:23:04,907 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-03-29 21:23:04,907 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-03-29 21:23:04,907 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-03-29 21:23:04,907 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-03-29 21:23:04,908 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-03-29 21:23:04,908 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-03-29 21:23:04,908 INFO L133 SettingsManager]: * sizeof long=4 [2018-03-29 21:23:04,908 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-03-29 21:23:04,908 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-03-29 21:23:04,909 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-03-29 21:23:04,909 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-03-29 21:23:04,909 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-03-29 21:23:04,909 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-03-29 21:23:04,909 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-03-29 21:23:04,909 INFO L133 SettingsManager]: * sizeof long double=12 [2018-03-29 21:23:04,910 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-03-29 21:23:04,910 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-03-29 21:23:04,910 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-03-29 21:23:04,910 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-03-29 21:23:04,910 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-29 21:23:04,911 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-03-29 21:23:04,911 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-03-29 21:23:04,911 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-03-29 21:23:04,911 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-03-29 21:23:04,911 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-03-29 21:23:04,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:04,912 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-03-29 21:23:04,913 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-03-29 21:23:04,913 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-03-29 21:23:04,913 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-03-29 21:23:04,913 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-03-29 21:23:04,948 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-03-29 21:23:04,960 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-03-29 21:23:04,965 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-03-29 21:23:04,966 INFO L271 PluginConnector]: Initializing CDTParser... [2018-03-29 21:23:04,967 INFO L276 PluginConnector]: CDTParser initialized [2018-03-29 21:23:04,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-03-29 21:23:05,300 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG5619d0c1a [2018-03-29 21:23:05,430 INFO L287 CDTParser]: IsIndexed: true [2018-03-29 21:23:05,430 INFO L288 CDTParser]: Found 1 translation units. [2018-03-29 21:23:05,431 INFO L168 CDTParser]: Scanning ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-03-29 21:23:05,432 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-03-29 21:23:05,432 INFO L215 ultiparseSymbolTable]: [2018-03-29 21:23:05,432 INFO L218 ultiparseSymbolTable]: Function table: [2018-03-29 21:23:05,432 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo ('foo') in ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-03-29 21:23:05,432 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-03-29 21:23:05,432 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-03-29 21:23:05,432 INFO L233 ultiparseSymbolTable]: [2018-03-29 21:23:05,450 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG5619d0c1a [2018-03-29 21:23:05,454 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-03-29 21:23:05,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-03-29 21:23:05,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-03-29 21:23:05,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-03-29 21:23:05,464 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-03-29 21:23:05,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.03 09:23:05" (1/1) ... [2018-03-29 21:23:05,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e99ee7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05, skipping insertion in model container [2018-03-29 21:23:05,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.03 09:23:05" (1/1) ... [2018-03-29 21:23:05,482 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-29 21:23:05,495 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-29 21:23:05,639 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-29 21:23:05,663 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-29 21:23:05,667 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-03-29 21:23:05,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05 WrapperNode [2018-03-29 21:23:05,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-03-29 21:23:05,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-03-29 21:23:05,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-03-29 21:23:05,676 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-03-29 21:23:05,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05" (1/1) ... [2018-03-29 21:23:05,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05" (1/1) ... [2018-03-29 21:23:05,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05" (1/1) ... [2018-03-29 21:23:05,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05" (1/1) ... [2018-03-29 21:23:05,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05" (1/1) ... [2018-03-29 21:23:05,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05" (1/1) ... [2018-03-29 21:23:05,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05" (1/1) ... [2018-03-29 21:23:05,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-03-29 21:23:05,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-03-29 21:23:05,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-03-29 21:23:05,707 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-03-29 21:23:05,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-29 21:23:05,764 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-03-29 21:23:05,764 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-03-29 21:23:05,764 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-03-29 21:23:05,764 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-03-29 21:23:05,764 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-03-29 21:23:05,764 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-03-29 21:23:05,765 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-03-29 21:23:05,765 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-03-29 21:23:05,765 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-03-29 21:23:05,765 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-03-29 21:23:05,765 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-03-29 21:23:05,765 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-03-29 21:23:05,765 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-03-29 21:23:06,066 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-03-29 21:23:06,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.03 09:23:06 BoogieIcfgContainer [2018-03-29 21:23:06,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-03-29 21:23:06,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-03-29 21:23:06,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-03-29 21:23:06,071 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-03-29 21:23:06,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.03 09:23:05" (1/3) ... [2018-03-29 21:23:06,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7821f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.03 09:23:06, skipping insertion in model container [2018-03-29 21:23:06,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.03 09:23:05" (2/3) ... [2018-03-29 21:23:06,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7821f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.03 09:23:06, skipping insertion in model container [2018-03-29 21:23:06,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.03 09:23:06" (3/3) ... [2018-03-29 21:23:06,074 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-03-29 21:23:06,082 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-03-29 21:23:06,088 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-03-29 21:23:06,136 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-03-29 21:23:06,137 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-03-29 21:23:06,137 INFO L370 AbstractCegarLoop]: Hoare is true [2018-03-29 21:23:06,137 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-03-29 21:23:06,137 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-03-29 21:23:06,137 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-03-29 21:23:06,137 INFO L374 AbstractCegarLoop]: Difference is false [2018-03-29 21:23:06,137 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-03-29 21:23:06,138 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-03-29 21:23:06,138 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-03-29 21:23:06,155 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-03-29 21:23:06,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-03-29 21:23:06,159 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:06,160 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 21:23:06,160 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:06,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1440860085, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:06,178 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:06,216 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:06,278 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:06,338 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 21:23:06,338 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-03-29 21:23:06,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-03-29 21:23:06,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-03-29 21:23:06,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-03-29 21:23:06,351 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 5 states. [2018-03-29 21:23:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:06,491 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2018-03-29 21:23:06,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-03-29 21:23:06,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-03-29 21:23:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:06,507 INFO L225 Difference]: With dead ends: 137 [2018-03-29 21:23:06,507 INFO L226 Difference]: Without dead ends: 81 [2018-03-29 21:23:06,512 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-03-29 21:23:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-03-29 21:23:06,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 65. [2018-03-29 21:23:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-03-29 21:23:06,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2018-03-29 21:23:06,561 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 14 [2018-03-29 21:23:06,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:06,561 INFO L459 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2018-03-29 21:23:06,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-03-29 21:23:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2018-03-29 21:23:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-03-29 21:23:06,563 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:06,563 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] [2018-03-29 21:23:06,563 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash -658382786, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:06,576 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:06,596 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:06,607 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:06,671 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 21:23:06,671 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-03-29 21:23:06,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-03-29 21:23:06,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-03-29 21:23:06,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-29 21:23:06,673 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 4 states. [2018-03-29 21:23:06,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:06,704 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-03-29 21:23:06,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-03-29 21:23:06,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-03-29 21:23:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:06,707 INFO L225 Difference]: With dead ends: 79 [2018-03-29 21:23:06,707 INFO L226 Difference]: Without dead ends: 78 [2018-03-29 21:23:06,708 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-03-29 21:23:06,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-03-29 21:23:06,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2018-03-29 21:23:06,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-03-29 21:23:06,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2018-03-29 21:23:06,716 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 23 [2018-03-29 21:23:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:06,717 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2018-03-29 21:23:06,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-03-29 21:23:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2018-03-29 21:23:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-03-29 21:23:06,718 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:06,718 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, 1] [2018-03-29 21:23:06,718 INFO L408 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:06,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1064970165, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:06,725 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:06,741 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:06,772 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 [2018-03-29 21:23:06,774 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 21:23:06,776 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 21:23:06,777 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-03-29 21:23:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:06,790 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:06,823 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 21:23:06,823 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2018-03-29 21:23:06,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-03-29 21:23:06,824 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-03-29 21:23:06,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-03-29 21:23:06,824 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 5 states. [2018-03-29 21:23:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:06,889 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2018-03-29 21:23:06,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-03-29 21:23:06,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-03-29 21:23:06,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:06,891 INFO L225 Difference]: With dead ends: 68 [2018-03-29 21:23:06,891 INFO L226 Difference]: Without dead ends: 67 [2018-03-29 21:23:06,891 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-03-29 21:23:06,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-03-29 21:23:06,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-03-29 21:23:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-03-29 21:23:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-03-29 21:23:06,899 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 24 [2018-03-29 21:23:06,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:06,899 INFO L459 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-03-29 21:23:06,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-03-29 21:23:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-03-29 21:23:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-03-29 21:23:06,900 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:06,901 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, 1] [2018-03-29 21:23:06,901 INFO L408 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:06,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1064970166, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:06,920 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:06,940 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:06,952 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 [2018-03-29 21:23:06,952 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 21:23:06,963 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 21:23:06,964 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-29 21:23:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:07,000 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:07,144 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 21:23:07,144 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2018-03-29 21:23:07,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-03-29 21:23:07,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-03-29 21:23:07,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-03-29 21:23:07,146 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 10 states. [2018-03-29 21:23:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:07,278 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2018-03-29 21:23:07,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-03-29 21:23:07,279 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-03-29 21:23:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:07,280 INFO L225 Difference]: With dead ends: 76 [2018-03-29 21:23:07,280 INFO L226 Difference]: Without dead ends: 75 [2018-03-29 21:23:07,281 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-03-29 21:23:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-03-29 21:23:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2018-03-29 21:23:07,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-03-29 21:23:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2018-03-29 21:23:07,289 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 24 [2018-03-29 21:23:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:07,289 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2018-03-29 21:23:07,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-03-29 21:23:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2018-03-29 21:23:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-03-29 21:23:07,291 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:07,291 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] [2018-03-29 21:23:07,291 INFO L408 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:07,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1397858905, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:07,302 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:07,326 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:07,345 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:07,432 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:07,433 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-03-29 21:23:07,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-29 21:23:07,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-29 21:23:07,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-03-29 21:23:07,433 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 8 states. [2018-03-29 21:23:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:07,573 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2018-03-29 21:23:07,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-29 21:23:07,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-03-29 21:23:07,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:07,575 INFO L225 Difference]: With dead ends: 102 [2018-03-29 21:23:07,575 INFO L226 Difference]: Without dead ends: 101 [2018-03-29 21:23:07,576 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-03-29 21:23:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-03-29 21:23:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 85. [2018-03-29 21:23:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-03-29 21:23:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2018-03-29 21:23:07,591 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 32 [2018-03-29 21:23:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:07,592 INFO L459 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2018-03-29 21:23:07,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-29 21:23:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2018-03-29 21:23:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-03-29 21:23:07,593 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:07,594 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] [2018-03-29 21:23:07,594 INFO L408 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:07,594 INFO L82 PathProgramCache]: Analyzing trace with hash -383953043, 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 [2018-03-29 21:23:07,608 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:07,627 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:07,640 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 [2018-03-29 21:23:07,640 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 21:23:07,662 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 21:23:07,662 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-29 21:23:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:07,726 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:07,839 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:07,839 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-03-29 21:23:07,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-03-29 21:23:07,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-03-29 21:23:07,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-03-29 21:23:07,840 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 14 states. [2018-03-29 21:23:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:08,097 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2018-03-29 21:23:08,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-03-29 21:23:08,097 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2018-03-29 21:23:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:08,098 INFO L225 Difference]: With dead ends: 96 [2018-03-29 21:23:08,098 INFO L226 Difference]: Without dead ends: 95 [2018-03-29 21:23:08,099 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2018-03-29 21:23:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-03-29 21:23:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2018-03-29 21:23:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-03-29 21:23:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2018-03-29 21:23:08,107 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 33 [2018-03-29 21:23:08,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:08,108 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2018-03-29 21:23:08,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-03-29 21:23:08,108 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2018-03-29 21:23:08,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-03-29 21:23:08,109 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:08,109 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, 1] [2018-03-29 21:23:08,109 INFO L408 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:08,110 INFO L82 PathProgramCache]: Analyzing trace with hash 402779255, 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 [2018-03-29 21:23:08,117 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:08,129 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:08,141 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:08,193 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 21:23:08,193 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-03-29 21:23:08,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-29 21:23:08,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-29 21:23:08,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-03-29 21:23:08,194 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 8 states. [2018-03-29 21:23:08,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:08,237 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2018-03-29 21:23:08,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-03-29 21:23:08,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-03-29 21:23:08,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:08,238 INFO L225 Difference]: With dead ends: 161 [2018-03-29 21:23:08,238 INFO L226 Difference]: Without dead ends: 86 [2018-03-29 21:23:08,238 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2018-03-29 21:23:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-03-29 21:23:08,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-03-29 21:23:08,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-03-29 21:23:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2018-03-29 21:23:08,247 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 34 [2018-03-29 21:23:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:08,247 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2018-03-29 21:23:08,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-29 21:23:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2018-03-29 21:23:08,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-03-29 21:23:08,249 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:08,249 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, 1] [2018-03-29 21:23:08,250 INFO L408 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:08,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1104010386, 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 [2018-03-29 21:23:08,256 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:08,274 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:08,303 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:08,402 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:08,402 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-03-29 21:23:08,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-03-29 21:23:08,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-03-29 21:23:08,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-03-29 21:23:08,403 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 12 states. [2018-03-29 21:23:08,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:08,509 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2018-03-29 21:23:08,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-03-29 21:23:08,510 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2018-03-29 21:23:08,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:08,510 INFO L225 Difference]: With dead ends: 164 [2018-03-29 21:23:08,510 INFO L226 Difference]: Without dead ends: 86 [2018-03-29 21:23:08,511 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2018-03-29 21:23:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-03-29 21:23:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-03-29 21:23:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-03-29 21:23:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2018-03-29 21:23:08,517 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 43 [2018-03-29 21:23:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:08,517 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2018-03-29 21:23:08,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-03-29 21:23:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2018-03-29 21:23:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-03-29 21:23:08,518 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:08,518 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, 1] [2018-03-29 21:23:08,518 INFO L408 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:08,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1311193991, 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 [2018-03-29 21:23:08,524 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:08,544 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:08,596 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:08,700 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:08,700 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-03-29 21:23:08,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-29 21:23:08,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-29 21:23:08,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-03-29 21:23:08,701 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 16 states. [2018-03-29 21:23:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:09,011 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2018-03-29 21:23:09,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-03-29 21:23:09,012 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2018-03-29 21:23:09,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:09,013 INFO L225 Difference]: With dead ends: 143 [2018-03-29 21:23:09,013 INFO L226 Difference]: Without dead ends: 142 [2018-03-29 21:23:09,014 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-03-29 21:23:09,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-03-29 21:23:09,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 121. [2018-03-29 21:23:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-03-29 21:23:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2018-03-29 21:23:09,023 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 50 [2018-03-29 21:23:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:09,024 INFO L459 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2018-03-29 21:23:09,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-29 21:23:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2018-03-29 21:23:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-03-29 21:23:09,025 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:09,025 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1] [2018-03-29 21:23:09,025 INFO L408 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:09,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1992308109, 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 [2018-03-29 21:23:09,034 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:09,049 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:09,059 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 [2018-03-29 21:23:09,059 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 21:23:09,062 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 21:23:09,062 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-29 21:23:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:09,200 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:09,433 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:09,434 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-03-29 21:23:09,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-03-29 21:23:09,434 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-03-29 21:23:09,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2018-03-29 21:23:09,434 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 22 states. [2018-03-29 21:23:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:10,095 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2018-03-29 21:23:10,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-03-29 21:23:10,096 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2018-03-29 21:23:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:10,097 INFO L225 Difference]: With dead ends: 135 [2018-03-29 21:23:10,097 INFO L226 Difference]: Without dead ends: 134 [2018-03-29 21:23:10,098 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=430, Invalid=1292, Unknown=0, NotChecked=0, Total=1722 [2018-03-29 21:23:10,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-03-29 21:23:10,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 122. [2018-03-29 21:23:10,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-03-29 21:23:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2018-03-29 21:23:10,106 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 51 [2018-03-29 21:23:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:10,107 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2018-03-29 21:23:10,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-03-29 21:23:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2018-03-29 21:23:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-03-29 21:23:10,108 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:10,108 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-03-29 21:23:10,109 INFO L408 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:10,109 INFO L82 PathProgramCache]: Analyzing trace with hash 418240910, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:10,115 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:10,132 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:10,213 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:10,337 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:10,338 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-03-29 21:23:10,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-03-29 21:23:10,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-03-29 21:23:10,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2018-03-29 21:23:10,339 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand 20 states. [2018-03-29 21:23:10,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:10,668 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2018-03-29 21:23:10,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-03-29 21:23:10,668 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 61 [2018-03-29 21:23:10,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:10,669 INFO L225 Difference]: With dead ends: 236 [2018-03-29 21:23:10,669 INFO L226 Difference]: Without dead ends: 122 [2018-03-29 21:23:10,670 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=432, Invalid=900, Unknown=0, NotChecked=0, Total=1332 [2018-03-29 21:23:10,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-03-29 21:23:10,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-03-29 21:23:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-03-29 21:23:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2018-03-29 21:23:10,675 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 61 [2018-03-29 21:23:10,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:10,675 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2018-03-29 21:23:10,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-03-29 21:23:10,675 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2018-03-29 21:23:10,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-03-29 21:23:10,677 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:10,677 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 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, 1] [2018-03-29 21:23:10,677 INFO L408 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:10,677 INFO L82 PathProgramCache]: Analyzing trace with hash -419442873, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:10,686 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:10,709 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:10,825 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:11,111 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:11,111 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-03-29 21:23:11,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-03-29 21:23:11,112 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-03-29 21:23:11,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-03-29 21:23:11,112 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand 32 states. [2018-03-29 21:23:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:12,219 INFO L93 Difference]: Finished difference Result 231 states and 249 transitions. [2018-03-29 21:23:12,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-03-29 21:23:12,220 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 86 [2018-03-29 21:23:12,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:12,221 INFO L225 Difference]: With dead ends: 231 [2018-03-29 21:23:12,221 INFO L226 Difference]: Without dead ends: 230 [2018-03-29 21:23:12,223 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1096, Invalid=3194, Unknown=0, NotChecked=0, Total=4290 [2018-03-29 21:23:12,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-03-29 21:23:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 193. [2018-03-29 21:23:12,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-03-29 21:23:12,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 211 transitions. [2018-03-29 21:23:12,230 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 211 transitions. Word has length 86 [2018-03-29 21:23:12,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:12,231 INFO L459 AbstractCegarLoop]: Abstraction has 193 states and 211 transitions. [2018-03-29 21:23:12,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-03-29 21:23:12,231 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 211 transitions. [2018-03-29 21:23:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-03-29 21:23:12,232 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:12,232 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 8, 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, 1] [2018-03-29 21:23:12,232 INFO L408 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:12,232 INFO L82 PathProgramCache]: Analyzing trace with hash -117827123, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:12,238 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:12,257 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:12,260 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 [2018-03-29 21:23:12,260 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 21:23:12,263 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 21:23:12,263 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-29 21:23:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:12,477 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:12,834 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:12,835 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2018-03-29 21:23:12,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-03-29 21:23:12,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-03-29 21:23:12,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2018-03-29 21:23:12,836 INFO L87 Difference]: Start difference. First operand 193 states and 211 transitions. Second operand 38 states. [2018-03-29 21:23:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:15,073 INFO L93 Difference]: Finished difference Result 219 states and 237 transitions. [2018-03-29 21:23:15,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-03-29 21:23:15,103 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 87 [2018-03-29 21:23:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:15,105 INFO L225 Difference]: With dead ends: 219 [2018-03-29 21:23:15,105 INFO L226 Difference]: Without dead ends: 218 [2018-03-29 21:23:15,107 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1510, Invalid=5132, Unknown=0, NotChecked=0, Total=6642 [2018-03-29 21:23:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-03-29 21:23:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 194. [2018-03-29 21:23:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-03-29 21:23:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 205 transitions. [2018-03-29 21:23:15,116 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 205 transitions. Word has length 87 [2018-03-29 21:23:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:15,117 INFO L459 AbstractCegarLoop]: Abstraction has 194 states and 205 transitions. [2018-03-29 21:23:15,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-03-29 21:23:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 205 transitions. [2018-03-29 21:23:15,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-03-29 21:23:15,118 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:15,118 INFO L355 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2018-03-29 21:23:15,118 INFO L408 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:15,118 INFO L82 PathProgramCache]: Analyzing trace with hash -800625202, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:15,124 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:15,152 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 3 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:15,295 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 3 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:15,632 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:15,632 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2018-03-29 21:23:15,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-03-29 21:23:15,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-03-29 21:23:15,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2018-03-29 21:23:15,634 INFO L87 Difference]: Start difference. First operand 194 states and 205 transitions. Second operand 36 states. [2018-03-29 21:23:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:16,558 INFO L93 Difference]: Finished difference Result 380 states and 402 transitions. [2018-03-29 21:23:16,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-03-29 21:23:16,559 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 97 [2018-03-29 21:23:16,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:16,560 INFO L225 Difference]: With dead ends: 380 [2018-03-29 21:23:16,560 INFO L226 Difference]: Without dead ends: 194 [2018-03-29 21:23:16,562 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-03-29 21:23:16,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-03-29 21:23:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-03-29 21:23:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-03-29 21:23:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2018-03-29 21:23:16,569 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 97 [2018-03-29 21:23:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:16,569 INFO L459 AbstractCegarLoop]: Abstraction has 194 states and 197 transitions. [2018-03-29 21:23:16,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-03-29 21:23:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 197 transitions. [2018-03-29 21:23:16,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-03-29 21:23:16,570 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:16,570 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 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, 1] [2018-03-29 21:23:16,570 INFO L408 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1349232953, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:16,578 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:16,612 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:16,929 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:17,849 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:17,849 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-03-29 21:23:17,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-03-29 21:23:17,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-03-29 21:23:17,851 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-03-29 21:23:17,851 INFO L87 Difference]: Start difference. First operand 194 states and 197 transitions. Second operand 64 states. [2018-03-29 21:23:23,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:23,243 INFO L93 Difference]: Finished difference Result 407 states and 441 transitions. [2018-03-29 21:23:23,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-03-29 21:23:23,243 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 158 [2018-03-29 21:23:23,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:23,246 INFO L225 Difference]: With dead ends: 407 [2018-03-29 21:23:23,246 INFO L226 Difference]: Without dead ends: 406 [2018-03-29 21:23:23,250 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-03-29 21:23:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-03-29 21:23:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 337. [2018-03-29 21:23:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-03-29 21:23:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 371 transitions. [2018-03-29 21:23:23,265 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 371 transitions. Word has length 158 [2018-03-29 21:23:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:23,266 INFO L459 AbstractCegarLoop]: Abstraction has 337 states and 371 transitions. [2018-03-29 21:23:23,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-03-29 21:23:23,266 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 371 transitions. [2018-03-29 21:23:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-03-29 21:23:23,268 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:23,268 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 16, 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, 1] [2018-03-29 21:23:23,268 INFO L408 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:23,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1123451469, 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 [2018-03-29 21:23:23,281 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:23,315 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:23,317 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 [2018-03-29 21:23:23,317 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 21:23:23,320 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 21:23:23,320 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-29 21:23:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:23,924 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:24,972 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:24,972 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2018-03-29 21:23:24,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-03-29 21:23:24,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-03-29 21:23:24,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=4147, Unknown=0, NotChecked=0, Total=4830 [2018-03-29 21:23:24,974 INFO L87 Difference]: Start difference. First operand 337 states and 371 transitions. Second operand 70 states. [2018-03-29 21:23:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:33,321 INFO L93 Difference]: Finished difference Result 387 states and 421 transitions. [2018-03-29 21:23:33,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-03-29 21:23:33,321 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 159 [2018-03-29 21:23:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:33,323 INFO L225 Difference]: With dead ends: 387 [2018-03-29 21:23:33,323 INFO L226 Difference]: Without dead ends: 386 [2018-03-29 21:23:33,327 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5800 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=5590, Invalid=20492, Unknown=0, NotChecked=0, Total=26082 [2018-03-29 21:23:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-03-29 21:23:33,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 338. [2018-03-29 21:23:33,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-03-29 21:23:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 357 transitions. [2018-03-29 21:23:33,340 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 357 transitions. Word has length 159 [2018-03-29 21:23:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:33,341 INFO L459 AbstractCegarLoop]: Abstraction has 338 states and 357 transitions. [2018-03-29 21:23:33,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-03-29 21:23:33,341 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 357 transitions. [2018-03-29 21:23:33,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-03-29 21:23:33,341 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:33,342 INFO L355 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 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] [2018-03-29 21:23:33,342 INFO L408 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:33,342 INFO L82 PathProgramCache]: Analyzing trace with hash 708523598, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:33,347 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:33,378 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 3 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:33,768 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 3 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:34,444 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:34,444 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2018-03-29 21:23:34,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-03-29 21:23:34,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-03-29 21:23:34,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1192, Invalid=3364, Unknown=0, NotChecked=0, Total=4556 [2018-03-29 21:23:34,445 INFO L87 Difference]: Start difference. First operand 338 states and 357 transitions. Second operand 68 states. [2018-03-29 21:23:37,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:37,114 INFO L93 Difference]: Finished difference Result 668 states and 706 transitions. [2018-03-29 21:23:37,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-03-29 21:23:37,114 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 169 [2018-03-29 21:23:37,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:37,116 INFO L225 Difference]: With dead ends: 668 [2018-03-29 21:23:37,116 INFO L226 Difference]: Without dead ends: 338 [2018-03-29 21:23:37,118 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6512 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6516, Invalid=14364, Unknown=0, NotChecked=0, Total=20880 [2018-03-29 21:23:37,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-03-29 21:23:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-03-29 21:23:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-03-29 21:23:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 341 transitions. [2018-03-29 21:23:37,130 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 341 transitions. Word has length 169 [2018-03-29 21:23:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:37,130 INFO L459 AbstractCegarLoop]: Abstraction has 338 states and 341 transitions. [2018-03-29 21:23:37,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-03-29 21:23:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 341 transitions. [2018-03-29 21:23:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-03-29 21:23:37,132 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:37,132 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 21:23:37,132 INFO L408 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:37,133 INFO L82 PathProgramCache]: Analyzing trace with hash 445310407, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:37,139 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:37,203 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:38,457 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:41,808 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:41,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-03-29 21:23:41,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-03-29 21:23:41,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-03-29 21:23:41,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=14979, Unknown=0, NotChecked=0, Total=16256 [2018-03-29 21:23:41,828 INFO L87 Difference]: Start difference. First operand 338 states and 341 transitions. Second operand 128 states. [2018-03-29 21:23:47,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:23:47,219 INFO L93 Difference]: Finished difference Result 356 states and 360 transitions. [2018-03-29 21:23:47,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-03-29 21:23:47,219 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 302 [2018-03-29 21:23:47,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:23:47,220 INFO L225 Difference]: With dead ends: 356 [2018-03-29 21:23:47,221 INFO L226 Difference]: Without dead ends: 355 [2018-03-29 21:23:47,222 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=3540, Invalid=32370, Unknown=0, NotChecked=0, Total=35910 [2018-03-29 21:23:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-03-29 21:23:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 346. [2018-03-29 21:23:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-03-29 21:23:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 350 transitions. [2018-03-29 21:23:47,237 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 350 transitions. Word has length 302 [2018-03-29 21:23:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:23:47,237 INFO L459 AbstractCegarLoop]: Abstraction has 346 states and 350 transitions. [2018-03-29 21:23:47,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-03-29 21:23:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 350 transitions. [2018-03-29 21:23:47,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-03-29 21:23:47,239 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:23:47,240 INFO L355 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 21:23:47,240 INFO L408 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:23:47,240 INFO L82 PathProgramCache]: Analyzing trace with hash 919720781, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:23:47,250 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:23:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:23:47,319 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:23:47,334 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 [2018-03-29 21:23:47,334 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-29 21:23:47,341 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-29 21:23:47,341 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-29 21:23:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 0 proven. 4309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:49,461 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:23:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 0 proven. 4309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:23:52,624 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:23:52,626 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 133 [2018-03-29 21:23:52,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-03-29 21:23:52,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-03-29 21:23:52,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1418, Invalid=16404, Unknown=0, NotChecked=0, Total=17822 [2018-03-29 21:23:52,627 INFO L87 Difference]: Start difference. First operand 346 states and 350 transitions. Second operand 134 states. [2018-03-29 21:24:02,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:24:02,217 INFO L93 Difference]: Finished difference Result 355 states and 359 transitions. [2018-03-29 21:24:02,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-03-29 21:24:02,218 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 303 [2018-03-29 21:24:02,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:24:02,219 INFO L225 Difference]: With dead ends: 355 [2018-03-29 21:24:02,219 INFO L226 Difference]: Without dead ends: 354 [2018-03-29 21:24:02,220 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10768 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4945, Invalid=47725, Unknown=0, NotChecked=0, Total=52670 [2018-03-29 21:24:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-03-29 21:24:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 347. [2018-03-29 21:24:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-03-29 21:24:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 351 transitions. [2018-03-29 21:24:02,233 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 351 transitions. Word has length 303 [2018-03-29 21:24:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:24:02,233 INFO L459 AbstractCegarLoop]: Abstraction has 347 states and 351 transitions. [2018-03-29 21:24:02,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-03-29 21:24:02,234 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 351 transitions. [2018-03-29 21:24:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-03-29 21:24:02,235 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:24:02,235 INFO L355 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 21:24:02,235 INFO L408 AbstractCegarLoop]: === Iteration 20 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:24:02,235 INFO L82 PathProgramCache]: Analyzing trace with hash -2021096898, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:24:02,251 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:24:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:24:02,323 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:24:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 4560 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:24:03,853 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:24:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 4560 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:24:06,154 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 21:24:06,154 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [69, 69] imperfect sequences [] total 134 [2018-03-29 21:24:06,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-03-29 21:24:06,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-03-29 21:24:06,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3467, Invalid=14355, Unknown=0, NotChecked=0, Total=17822 [2018-03-29 21:24:06,156 INFO L87 Difference]: Start difference. First operand 347 states and 351 transitions. Second operand 134 states. [2018-03-29 21:24:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:24:10,206 INFO L93 Difference]: Finished difference Result 679 states and 688 transitions. [2018-03-29 21:24:10,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-03-29 21:24:10,207 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 311 [2018-03-29 21:24:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:24:10,209 INFO L225 Difference]: With dead ends: 679 [2018-03-29 21:24:10,209 INFO L226 Difference]: Without dead ends: 346 [2018-03-29 21:24:10,212 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 487 SyntacticMatches, 2 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12977 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=13102, Invalid=40954, Unknown=0, NotChecked=0, Total=54056 [2018-03-29 21:24:10,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-03-29 21:24:10,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 343. [2018-03-29 21:24:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-03-29 21:24:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 346 transitions. [2018-03-29 21:24:10,222 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 346 transitions. Word has length 311 [2018-03-29 21:24:10,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:24:10,222 INFO L459 AbstractCegarLoop]: Abstraction has 343 states and 346 transitions. [2018-03-29 21:24:10,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-03-29 21:24:10,222 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 346 transitions. [2018-03-29 21:24:10,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-03-29 21:24:10,224 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:24:10,225 INFO L355 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 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] [2018-03-29 21:24:10,225 INFO L408 AbstractCegarLoop]: === Iteration 21 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:24:10,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1528477874, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:24:10,234 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:24:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:24:10,302 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:24:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 3 proven. 4247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:24:11,617 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:24:11,829 WARN L148 SmtUtils]: Spent 206ms on a formula simplification that was a NOOP. DAG size: 165 [2018-03-29 21:24:12,036 WARN L148 SmtUtils]: Spent 203ms on a formula simplification that was a NOOP. DAG size: 165 [2018-03-29 21:24:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 3 proven. 4247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-29 21:24:13,206 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:24:13,206 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 131 [2018-03-29 21:24:13,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-03-29 21:24:13,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-03-29 21:24:13,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3396, Invalid=13634, Unknown=0, NotChecked=0, Total=17030 [2018-03-29 21:24:13,209 INFO L87 Difference]: Start difference. First operand 343 states and 346 transitions. Second operand 131 states. [2018-03-29 21:24:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:24:15,153 INFO L93 Difference]: Finished difference Result 675 states and 681 transitions. [2018-03-29 21:24:15,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-03-29 21:24:15,153 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 313 [2018-03-29 21:24:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:24:15,156 INFO L225 Difference]: With dead ends: 675 [2018-03-29 21:24:15,156 INFO L226 Difference]: Without dead ends: 343 [2018-03-29 21:24:15,159 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 494 SyntacticMatches, 2 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14761 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=9634, Invalid=27808, Unknown=0, NotChecked=0, Total=37442 [2018-03-29 21:24:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-03-29 21:24:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-03-29 21:24:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-03-29 21:24:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 345 transitions. [2018-03-29 21:24:15,171 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 345 transitions. Word has length 313 [2018-03-29 21:24:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:24:15,172 INFO L459 AbstractCegarLoop]: Abstraction has 343 states and 345 transitions. [2018-03-29 21:24:15,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-03-29 21:24:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 345 transitions. [2018-03-29 21:24:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-03-29 21:24:15,175 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:24:15,175 INFO L355 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 32, 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] [2018-03-29 21:24:15,175 INFO L408 AbstractCegarLoop]: === Iteration 22 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:24:15,175 INFO L82 PathProgramCache]: Analyzing trace with hash -64877961, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:24:15,185 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:24:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:24:15,242 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:24:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-03-29 21:24:15,335 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:24:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-03-29 21:24:15,457 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-03-29 21:24:15,457 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-03-29 21:24:15,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-03-29 21:24:15,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-03-29 21:24:15,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-03-29 21:24:15,458 INFO L87 Difference]: Start difference. First operand 343 states and 345 transitions. Second operand 9 states. [2018-03-29 21:24:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:24:15,508 INFO L93 Difference]: Finished difference Result 359 states and 361 transitions. [2018-03-29 21:24:15,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-03-29 21:24:15,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 322 [2018-03-29 21:24:15,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:24:15,510 INFO L225 Difference]: With dead ends: 359 [2018-03-29 21:24:15,511 INFO L226 Difference]: Without dead ends: 358 [2018-03-29 21:24:15,511 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 635 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-03-29 21:24:15,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-03-29 21:24:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 341. [2018-03-29 21:24:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-03-29 21:24:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 343 transitions. [2018-03-29 21:24:15,523 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 343 transitions. Word has length 322 [2018-03-29 21:24:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:24:15,524 INFO L459 AbstractCegarLoop]: Abstraction has 341 states and 343 transitions. [2018-03-29 21:24:15,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-03-29 21:24:15,524 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 343 transitions. [2018-03-29 21:24:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-03-29 21:24:15,526 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:24:15,527 INFO L355 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 32, 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, 1] [2018-03-29 21:24:15,527 INFO L408 AbstractCegarLoop]: === Iteration 23 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:24:15,527 INFO L82 PathProgramCache]: Analyzing trace with hash -2071552900, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:24:15,539 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:24:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:24:15,617 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:24:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-03-29 21:24:15,661 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:24:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-03-29 21:24:15,738 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:24:15,738 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-03-29 21:24:15,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-29 21:24:15,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-29 21:24:15,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-03-29 21:24:15,739 INFO L87 Difference]: Start difference. First operand 341 states and 343 transitions. Second operand 8 states. [2018-03-29 21:24:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:24:15,808 INFO L93 Difference]: Finished difference Result 391 states and 397 transitions. [2018-03-29 21:24:15,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-29 21:24:15,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2018-03-29 21:24:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:24:15,810 INFO L225 Difference]: With dead ends: 391 [2018-03-29 21:24:15,810 INFO L226 Difference]: Without dead ends: 371 [2018-03-29 21:24:15,810 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-03-29 21:24:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-03-29 21:24:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 361. [2018-03-29 21:24:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-03-29 21:24:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 365 transitions. [2018-03-29 21:24:15,820 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 365 transitions. Word has length 330 [2018-03-29 21:24:15,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:24:15,820 INFO L459 AbstractCegarLoop]: Abstraction has 361 states and 365 transitions. [2018-03-29 21:24:15,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-29 21:24:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 365 transitions. [2018-03-29 21:24:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2018-03-29 21:24:15,827 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:24:15,827 INFO L355 BasicCegarLoop]: trace histogram [99, 96, 96, 96, 96, 96, 96, 96, 96, 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, 1] [2018-03-29 21:24:15,827 INFO L408 AbstractCegarLoop]: === Iteration 24 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:24:15,828 INFO L82 PathProgramCache]: Analyzing trace with hash -991334700, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:24:15,835 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:24:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:24:16,030 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:24:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 41682 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 41646 trivial. 0 not checked. [2018-03-29 21:24:16,394 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:24:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 41682 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 41646 trivial. 0 not checked. [2018-03-29 21:24:16,722 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:24:16,723 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-03-29 21:24:16,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-29 21:24:16,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-29 21:24:16,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-03-29 21:24:16,725 INFO L87 Difference]: Start difference. First operand 361 states and 365 transitions. Second operand 16 states. [2018-03-29 21:24:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:24:16,949 INFO L93 Difference]: Finished difference Result 431 states and 443 transitions. [2018-03-29 21:24:16,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-03-29 21:24:16,950 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 946 [2018-03-29 21:24:16,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:24:16,952 INFO L225 Difference]: With dead ends: 431 [2018-03-29 21:24:16,952 INFO L226 Difference]: Without dead ends: 411 [2018-03-29 21:24:16,953 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1903 GetRequests, 1877 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2018-03-29 21:24:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-03-29 21:24:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 401. [2018-03-29 21:24:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-03-29 21:24:16,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 409 transitions. [2018-03-29 21:24:16,965 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 409 transitions. Word has length 946 [2018-03-29 21:24:16,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:24:16,966 INFO L459 AbstractCegarLoop]: Abstraction has 401 states and 409 transitions. [2018-03-29 21:24:16,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-29 21:24:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 409 transitions. [2018-03-29 21:24:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2179 [2018-03-29 21:24:16,989 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:24:16,990 INFO L355 BasicCegarLoop]: trace histogram [231, 224, 224, 224, 224, 224, 224, 224, 224, 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, 1] [2018-03-29 21:24:16,990 INFO L408 AbstractCegarLoop]: === Iteration 25 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:24:16,990 INFO L82 PathProgramCache]: Analyzing trace with hash -370726012, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:24:17,013 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:24:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:24:17,441 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:24:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 228354 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 228130 trivial. 0 not checked. [2018-03-29 21:24:18,957 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:24:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 228354 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 228130 trivial. 0 not checked. [2018-03-29 21:24:20,637 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:24:20,637 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-03-29 21:24:20,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-03-29 21:24:20,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-03-29 21:24:20,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2018-03-29 21:24:20,639 INFO L87 Difference]: Start difference. First operand 401 states and 409 transitions. Second operand 32 states. [2018-03-29 21:24:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:24:21,317 INFO L93 Difference]: Finished difference Result 511 states and 535 transitions. [2018-03-29 21:24:21,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-03-29 21:24:21,318 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 2178 [2018-03-29 21:24:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:24:21,323 INFO L225 Difference]: With dead ends: 511 [2018-03-29 21:24:21,324 INFO L226 Difference]: Without dead ends: 491 [2018-03-29 21:24:21,325 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4383 GetRequests, 4325 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1155, Invalid=2385, Unknown=0, NotChecked=0, Total=3540 [2018-03-29 21:24:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-03-29 21:24:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 481. [2018-03-29 21:24:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-03-29 21:24:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 497 transitions. [2018-03-29 21:24:21,352 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 497 transitions. Word has length 2178 [2018-03-29 21:24:21,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:24:21,353 INFO L459 AbstractCegarLoop]: Abstraction has 481 states and 497 transitions. [2018-03-29 21:24:21,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-03-29 21:24:21,354 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 497 transitions. [2018-03-29 21:24:21,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4643 [2018-03-29 21:24:21,509 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:24:21,510 INFO L355 BasicCegarLoop]: trace histogram [495, 480, 480, 480, 480, 480, 480, 480, 480, 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, 1] [2018-03-29 21:24:21,510 INFO L408 AbstractCegarLoop]: === Iteration 26 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:24:21,511 INFO L82 PathProgramCache]: Analyzing trace with hash 325256420, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:24:21,517 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:24:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:24:22,546 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:24:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1051170 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1050090 trivial. 0 not checked. [2018-03-29 21:24:28,511 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-03-29 21:24:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1051170 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1050090 trivial. 0 not checked. [2018-03-29 21:24:34,452 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:24:34,452 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2018-03-29 21:24:34,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-03-29 21:24:34,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-03-29 21:24:34,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2018-03-29 21:24:34,456 INFO L87 Difference]: Start difference. First operand 481 states and 497 transitions. Second operand 64 states. [2018-03-29 21:24:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-29 21:24:35,692 INFO L93 Difference]: Finished difference Result 671 states and 719 transitions. [2018-03-29 21:24:35,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-03-29 21:24:35,692 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 4642 [2018-03-29 21:24:35,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-29 21:24:35,698 INFO L225 Difference]: With dead ends: 671 [2018-03-29 21:24:35,698 INFO L226 Difference]: Without dead ends: 651 [2018-03-29 21:24:35,700 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 9343 GetRequests, 9221 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3257 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4867, Invalid=10385, Unknown=0, NotChecked=0, Total=15252 [2018-03-29 21:24:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2018-03-29 21:24:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 641. [2018-03-29 21:24:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2018-03-29 21:24:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 673 transitions. [2018-03-29 21:24:35,727 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 673 transitions. Word has length 4642 [2018-03-29 21:24:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-29 21:24:35,729 INFO L459 AbstractCegarLoop]: Abstraction has 641 states and 673 transitions. [2018-03-29 21:24:35,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-03-29 21:24:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 673 transitions. [2018-03-29 21:24:36,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9571 [2018-03-29 21:24:36,108 INFO L347 BasicCegarLoop]: Found error trace [2018-03-29 21:24:36,110 INFO L355 BasicCegarLoop]: trace histogram [1023, 992, 992, 992, 992, 992, 992, 992, 992, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-29 21:24:36,110 INFO L408 AbstractCegarLoop]: === Iteration 27 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-29 21:24:36,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1722009692, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-29 21:24:36,117 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-03-29 21:24:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-29 21:24:37,770 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-29 21:25:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4494690 backedges. 0 proven. 4712 refuted. 0 times theorem prover too weak. 4489978 trivial. 0 not checked. [2018-03-29 21:25:01,425 INFO L314 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-03-29 21:25:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4494690 backedges. 0 proven. 4712 refuted. 0 times theorem prover too weak. 4489978 trivial. 0 not checked. [2018-03-29 21:25:25,845 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-29 21:25:25,846 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-03-29 21:25:25,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-03-29 21:25:25,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-03-29 21:25:25,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2018-03-29 21:25:25,852 INFO L87 Difference]: Start difference. First operand 641 states and 673 transitions. Second operand 65 states. [2018-03-29 21:25:25,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-03-29 21:25:25,853 WARN L519 AbstractCegarLoop]: Verification canceled [2018-03-29 21:25:25,857 WARN L197 ceAbstractionStarter]: Timeout [2018-03-29 21:25:25,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.03 09:25:25 BoogieIcfgContainer [2018-03-29 21:25:25,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-03-29 21:25:25,858 INFO L168 Benchmark]: Toolchain (without parser) took 140403.26 ms. Allocated memory was 297.3 MB in the beginning and 1.2 GB in the end (delta: 918.6 MB). Free memory was 239.0 MB in the beginning and 964.8 MB in the end (delta: -725.8 MB). Peak memory consumption was 192.7 MB. Max. memory is 5.3 GB. [2018-03-29 21:25:25,859 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 297.3 MB. Free memory is still 259.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-03-29 21:25:25,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.64 ms. Allocated memory is still 297.3 MB. Free memory was 238.0 MB in the beginning and 229.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. [2018-03-29 21:25:25,860 INFO L168 Benchmark]: Boogie Preprocessor took 30.49 ms. Allocated memory is still 297.3 MB. Free memory was 229.0 MB in the beginning and 227.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-03-29 21:25:25,860 INFO L168 Benchmark]: RCFGBuilder took 360.18 ms. Allocated memory was 297.3 MB in the beginning and 451.4 MB in the end (delta: 154.1 MB). Free memory was 227.0 MB in the beginning and 417.8 MB in the end (delta: -190.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 5.3 GB. [2018-03-29 21:25:25,860 INFO L168 Benchmark]: TraceAbstraction took 139789.53 ms. Allocated memory was 451.4 MB in the beginning and 1.2 GB in the end (delta: 764.4 MB). Free memory was 417.8 MB in the beginning and 964.8 MB in the end (delta: -547.0 MB). Peak memory consumption was 217.4 MB. Max. memory is 5.3 GB. [2018-03-29 21:25:25,862 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 297.3 MB. Free memory is still 259.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 217.64 ms. Allocated memory is still 297.3 MB. Free memory was 238.0 MB in the beginning and 229.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.49 ms. Allocated memory is still 297.3 MB. Free memory was 229.0 MB in the beginning and 227.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 360.18 ms. Allocated memory was 297.3 MB in the beginning and 451.4 MB in the end (delta: 154.1 MB). Free memory was 227.0 MB in the beginning and 417.8 MB in the end (delta: -190.7 MB). Peak memory consumption was 24.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 139789.53 ms. Allocated memory was 451.4 MB in the beginning and 1.2 GB in the end (delta: 764.4 MB). Free memory was 417.8 MB in the beginning and 964.8 MB in the end (delta: -547.0 MB). Peak memory consumption was 217.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 16]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 16). Cancelled while BasicCegarLoop was constructing difference of abstraction (641states) and interpolant automaton (currently 2 states, 65 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 16]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 16). Cancelled while BasicCegarLoop was constructing difference of abstraction (641states) and interpolant automaton (currently 2 states, 65 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 16]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 16). Cancelled while BasicCegarLoop was constructing difference of abstraction (641states) and interpolant automaton (currently 2 states, 65 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 29]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 29). Cancelled while BasicCegarLoop was constructing difference of abstraction (641states) and interpolant automaton (currently 2 states, 65 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 21). Cancelled while BasicCegarLoop was constructing difference of abstraction (641states) and interpolant automaton (currently 2 states, 65 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 26]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 26). Cancelled while BasicCegarLoop was constructing difference of abstraction (641states) and interpolant automaton (currently 2 states, 65 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 62 locations, 6 error locations. TIMEOUT Result, 139.7s OverallTime, 27 OverallIterations, 1023 TraceHistogramMax, 46.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1967 SDtfs, 8996 SDslu, 40119 SDs, 0 SdLazy, 39708 SolverSat, 2412 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41558 GetRequests, 39524 SyntacticMatches, 74 SemanticMatches, 1960 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70377 ImplicationChecksByTransitivity, 54.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=641occurred in iteration=26, 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: 0.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 345 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 87.6s InterpolantComputationTime, 20362 NumberOfCodeBlocks, 20362 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 40670 ConstructedInterpolants, 0 QuantifiedInterpolants, 261178364 SizeOfPredicates, 561 NumberOfNonLiveVariables, 36743 ConjunctsInSsa, 902 ConjunctsInUnsatCore, 54 InterpolantComputations, 14 PerfectInterpolantSequences, 11646962/11692172 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/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-03-29_21-25-25-871.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-03-29_21-25-25-871.csv Completed graceful shutdown