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 0.1.23-8168ed2-m [2018-04-11 22:19:24,650 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 22:19:24,652 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 22:19:24,666 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-11 22:19:24,667 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-11 22:19:24,668 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-11 22:19:24,669 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-11 22:19:24,671 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-11 22:19:24,673 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-11 22:19:24,673 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-11 22:19:24,674 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-11 22:19:24,675 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-11 22:19:24,676 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-11 22:19:24,677 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-11 22:19:24,678 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-11 22:19:24,680 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-11 22:19:24,682 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-11 22:19:24,683 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-11 22:19:24,684 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-11 22:19:24,686 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-11 22:19:24,689 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-11 22:19:24,689 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-11 22:19:24,689 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-11 22:19:24,690 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-11 22:19:24,691 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-11 22:19:24,692 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-11 22:19:24,693 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-11 22:19:24,693 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-11 22:19:24,694 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-11 22:19:24,694 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-11 22:19:24,695 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-11 22:19:24,695 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-11 22:19:24,719 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 22:19:24,719 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 22:19:24,719 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-11 22:19:24,719 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-11 22:19:24,720 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-11 22:19:24,720 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-11 22:19:24,721 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-11 22:19:24,721 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-11 22:19:24,721 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-11 22:19:24,721 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-11 22:19:24,721 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-11 22:19:24,722 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-11 22:19:24,722 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 22:19:24,722 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 22:19:24,722 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 22:19:24,722 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 22:19:24,723 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 22:19:24,723 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 22:19:24,723 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 22:19:24,723 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-11 22:19:24,723 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 22:19:24,724 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 22:19:24,724 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 22:19:24,724 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-11 22:19:24,724 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-11 22:19:24,724 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 22:19:24,725 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 22:19:24,725 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 22:19:24,725 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-11 22:19:24,725 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-11 22:19:24,725 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-11 22:19:24,725 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-11 22:19:24,726 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:19:24,726 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-11 22:19:24,727 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-11 22:19:24,727 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-11 22:19:24,727 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-11 22:19:24,727 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-11 22:19:24,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 22:19:24,772 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 22:19:24,776 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 22:19:24,778 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 22:19:24,778 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 22:19:24,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-04-11 22:19:25,113 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGa511ad032 [2018-04-11 22:19:25,243 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 22:19:25,243 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 22:19:25,244 INFO L168 CDTParser]: Scanning ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-04-11 22:19:25,245 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 22:19:25,245 INFO L215 ultiparseSymbolTable]: [2018-04-11 22:19:25,245 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 22:19:25,245 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo ('foo') in ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-04-11 22:19:25,246 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-04-11 22:19:25,246 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 22:19:25,246 INFO L233 ultiparseSymbolTable]: [2018-04-11 22:19:25,260 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGa511ad032 [2018-04-11 22:19:25,265 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 22:19:25,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 22:19:25,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 22:19:25,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 22:19:25,275 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 22:19:25,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 10:19:25" (1/1) ... [2018-04-11 22:19:25,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b47bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25, skipping insertion in model container [2018-04-11 22:19:25,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 10:19:25" (1/1) ... [2018-04-11 22:19:25,291 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 22:19:25,305 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 22:19:25,436 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 22:19:25,461 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 22:19:25,466 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-11 22:19:25,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25 WrapperNode [2018-04-11 22:19:25,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 22:19:25,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 22:19:25,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 22:19:25,476 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 22:19:25,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25" (1/1) ... [2018-04-11 22:19:25,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25" (1/1) ... [2018-04-11 22:19:25,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25" (1/1) ... [2018-04-11 22:19:25,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25" (1/1) ... [2018-04-11 22:19:25,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25" (1/1) ... [2018-04-11 22:19:25,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25" (1/1) ... [2018-04-11 22:19:25,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25" (1/1) ... [2018-04-11 22:19:25,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 22:19:25,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 22:19:25,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 22:19:25,511 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 22:19:25,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 22:19:25,567 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 22:19:25,567 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 22:19:25,568 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-04-11 22:19:25,568 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 22:19:25,568 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-04-11 22:19:25,568 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 22:19:25,568 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 22:19:25,568 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-11 22:19:25,568 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 22:19:25,569 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 22:19:25,569 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 22:19:25,569 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 22:19:25,569 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 22:19:25,841 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 22:19:25,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 10:19:25 BoogieIcfgContainer [2018-04-11 22:19:25,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 22:19:25,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 22:19:25,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 22:19:25,845 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 22:19:25,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 10:19:25" (1/3) ... [2018-04-11 22:19:25,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4da9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 10:19:25, skipping insertion in model container [2018-04-11 22:19:25,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:19:25" (2/3) ... [2018-04-11 22:19:25,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4da9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 10:19:25, skipping insertion in model container [2018-04-11 22:19:25,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 10:19:25" (3/3) ... [2018-04-11 22:19:25,848 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-04-11 22:19:25,855 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-11 22:19:25,863 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-04-11 22:19:25,912 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 22:19:25,913 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 22:19:25,913 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-11 22:19:25,913 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-11 22:19:25,913 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-11 22:19:25,913 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 22:19:25,913 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 22:19:25,914 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 22:19:25,914 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 22:19:25,914 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 22:19:25,927 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-04-11 22:19:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-04-11 22:19:25,932 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:25,933 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:19:25,933 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]=== [2018-04-11 22:19:25,937 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 [2018-04-11 22:19:25,950 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:25,987 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:26,037 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:26,091 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:19:26,091 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-04-11 22:19:26,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 22:19:26,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 22:19:26,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-04-11 22:19:26,107 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 5 states. [2018-04-11 22:19:26,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:26,221 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2018-04-11 22:19:26,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-11 22:19:26,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-04-11 22:19:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:26,232 INFO L225 Difference]: With dead ends: 137 [2018-04-11 22:19:26,232 INFO L226 Difference]: Without dead ends: 81 [2018-04-11 22:19:26,235 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 [2018-04-11 22:19:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-04-11 22:19:26,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 65. [2018-04-11 22:19:26,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-04-11 22:19:26,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2018-04-11 22:19:26,282 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 14 [2018-04-11 22:19:26,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:26,283 INFO L459 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2018-04-11 22:19:26,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 22:19:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2018-04-11 22:19:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-11 22:19:26,284 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:26,284 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 22:19:26,284 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]=== [2018-04-11 22:19:26,285 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 [2018-04-11 22:19:26,296 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:26,320 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:26,329 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:26,391 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:19:26,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-11 22:19:26,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 22:19:26,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 22:19:26,394 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-11 22:19:26,394 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 4 states. [2018-04-11 22:19:26,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:26,448 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-04-11 22:19:26,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-11 22:19:26,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-04-11 22:19:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:26,451 INFO L225 Difference]: With dead ends: 79 [2018-04-11 22:19:26,452 INFO L226 Difference]: Without dead ends: 78 [2018-04-11 22:19:26,452 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 [2018-04-11 22:19:26,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-04-11 22:19:26,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2018-04-11 22:19:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-04-11 22:19:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2018-04-11 22:19:26,461 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 23 [2018-04-11 22:19:26,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:26,462 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2018-04-11 22:19:26,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 22:19:26,462 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2018-04-11 22:19:26,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-11 22:19:26,463 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:26,463 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] [2018-04-11 22:19:26,463 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]=== [2018-04-11 22:19:26,463 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 [2018-04-11 22:19:26,474 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:26,495 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:26,517 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:19:26,519 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:19:26,522 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:19:26,523 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-11 22:19:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:26,536 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:26,563 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:19:26,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2018-04-11 22:19:26,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 22:19:26,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 22:19:26,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-11 22:19:26,564 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 5 states. [2018-04-11 22:19:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:26,625 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2018-04-11 22:19:26,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 22:19:26,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-04-11 22:19:26,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:26,627 INFO L225 Difference]: With dead ends: 68 [2018-04-11 22:19:26,627 INFO L226 Difference]: Without dead ends: 67 [2018-04-11 22:19:26,628 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 [2018-04-11 22:19:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-04-11 22:19:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-04-11 22:19:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-04-11 22:19:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-04-11 22:19:26,637 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 24 [2018-04-11 22:19:26,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:26,638 INFO L459 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-04-11 22:19:26,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 22:19:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-04-11 22:19:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-11 22:19:26,639 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:26,639 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] [2018-04-11 22:19:26,639 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]=== [2018-04-11 22:19:26,639 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 [2018-04-11 22:19:26,647 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:26,664 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:26,684 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:19:26,684 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:19:26,703 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:19:26,703 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:19:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:26,736 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:26,856 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:19:26,856 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2018-04-11 22:19:26,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-11 22:19:26,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-11 22:19:26,857 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-04-11 22:19:26,857 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 10 states. [2018-04-11 22:19:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:27,045 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2018-04-11 22:19:27,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 22:19:27,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-04-11 22:19:27,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:27,047 INFO L225 Difference]: With dead ends: 76 [2018-04-11 22:19:27,047 INFO L226 Difference]: Without dead ends: 75 [2018-04-11 22:19:27,048 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 [2018-04-11 22:19:27,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-04-11 22:19:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2018-04-11 22:19:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-04-11 22:19:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2018-04-11 22:19:27,057 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 24 [2018-04-11 22:19:27,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:27,058 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2018-04-11 22:19:27,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-11 22:19:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2018-04-11 22:19:27,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-11 22:19:27,059 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:27,060 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] [2018-04-11 22:19:27,060 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]=== [2018-04-11 22:19:27,060 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 [2018-04-11 22:19:27,070 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:27,089 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:27,157 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:27,251 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:27,251 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-11 22:19:27,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:19:27,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:19:27,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:19:27,253 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 8 states. [2018-04-11 22:19:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:27,383 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2018-04-11 22:19:27,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 22:19:27,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-04-11 22:19:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:27,385 INFO L225 Difference]: With dead ends: 102 [2018-04-11 22:19:27,385 INFO L226 Difference]: Without dead ends: 101 [2018-04-11 22:19:27,386 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:19:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-04-11 22:19:27,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 85. [2018-04-11 22:19:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-04-11 22:19:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2018-04-11 22:19:27,396 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 32 [2018-04-11 22:19:27,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:27,397 INFO L459 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2018-04-11 22:19:27,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:19:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2018-04-11 22:19:27,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-04-11 22:19:27,398 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:27,398 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] [2018-04-11 22:19:27,399 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]=== [2018-04-11 22:19:27,399 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 [2018-04-11 22:19:27,410 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:27,427 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:27,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:19:27,439 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:19:27,454 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:19:27,455 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:19:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:27,523 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:27,664 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:27,664 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-04-11 22:19:27,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-11 22:19:27,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-11 22:19:27,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-04-11 22:19:27,665 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 14 states. [2018-04-11 22:19:27,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:27,912 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2018-04-11 22:19:27,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-11 22:19:27,912 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2018-04-11 22:19:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:27,914 INFO L225 Difference]: With dead ends: 96 [2018-04-11 22:19:27,914 INFO L226 Difference]: Without dead ends: 95 [2018-04-11 22:19:27,915 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 [2018-04-11 22:19:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-04-11 22:19:27,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2018-04-11 22:19:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-11 22:19:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2018-04-11 22:19:27,923 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 33 [2018-04-11 22:19:27,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:27,924 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2018-04-11 22:19:27,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-11 22:19:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2018-04-11 22:19:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-11 22:19:27,925 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:27,925 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] [2018-04-11 22:19:27,925 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]=== [2018-04-11 22:19:27,926 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 [2018-04-11 22:19:27,933 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:27,947 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:27,960 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:27,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:28,011 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:19:28,011 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-11 22:19:28,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:19:28,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:19:28,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:19:28,012 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 8 states. [2018-04-11 22:19:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:28,065 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2018-04-11 22:19:28,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 22:19:28,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-04-11 22:19:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:28,067 INFO L225 Difference]: With dead ends: 161 [2018-04-11 22:19:28,067 INFO L226 Difference]: Without dead ends: 86 [2018-04-11 22:19:28,068 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 [2018-04-11 22:19:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-04-11 22:19:28,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-04-11 22:19:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-11 22:19:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2018-04-11 22:19:28,077 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 34 [2018-04-11 22:19:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:28,078 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2018-04-11 22:19:28,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:19:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2018-04-11 22:19:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-04-11 22:19:28,079 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:28,080 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] [2018-04-11 22:19:28,080 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]=== [2018-04-11 22:19:28,080 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 [2018-04-11 22:19:28,088 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:28,105 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:28,146 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:28,234 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:28,234 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-04-11 22:19:28,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 22:19:28,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 22:19:28,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-04-11 22:19:28,235 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 12 states. [2018-04-11 22:19:28,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:28,346 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2018-04-11 22:19:28,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-11 22:19:28,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2018-04-11 22:19:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:28,347 INFO L225 Difference]: With dead ends: 164 [2018-04-11 22:19:28,347 INFO L226 Difference]: Without dead ends: 86 [2018-04-11 22:19:28,348 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 [2018-04-11 22:19:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-04-11 22:19:28,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-04-11 22:19:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-11 22:19:28,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2018-04-11 22:19:28,354 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 43 [2018-04-11 22:19:28,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:28,354 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2018-04-11 22:19:28,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 22:19:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2018-04-11 22:19:28,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-04-11 22:19:28,355 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:28,355 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] [2018-04-11 22:19:28,355 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]=== [2018-04-11 22:19:28,356 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 [2018-04-11 22:19:28,362 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:28,380 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:28,427 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:28,536 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:28,537 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-11 22:19:28,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 22:19:28,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 22:19:28,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:19:28,538 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 16 states. [2018-04-11 22:19:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:28,863 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2018-04-11 22:19:28,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-11 22:19:28,863 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2018-04-11 22:19:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:28,865 INFO L225 Difference]: With dead ends: 143 [2018-04-11 22:19:28,865 INFO L226 Difference]: Without dead ends: 142 [2018-04-11 22:19:28,866 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2018-04-11 22:19:28,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-04-11 22:19:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 121. [2018-04-11 22:19:28,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-04-11 22:19:28,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2018-04-11 22:19:28,876 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 50 [2018-04-11 22:19:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:28,876 INFO L459 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2018-04-11 22:19:28,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 22:19:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2018-04-11 22:19:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-04-11 22:19:28,877 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:28,877 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] [2018-04-11 22:19:28,877 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]=== [2018-04-11 22:19:28,878 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 [2018-04-11 22:19:28,886 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:28,903 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:28,907 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:19:28,908 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:19:28,911 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:19:28,911 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:19:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:29,051 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:29,278 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:29,279 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-04-11 22:19:29,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-11 22:19:29,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-11 22:19:29,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2018-04-11 22:19:29,280 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 22 states. [2018-04-11 22:19:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:29,980 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2018-04-11 22:19:29,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-11 22:19:29,981 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2018-04-11 22:19:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:29,982 INFO L225 Difference]: With dead ends: 135 [2018-04-11 22:19:29,982 INFO L226 Difference]: Without dead ends: 134 [2018-04-11 22:19:29,983 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 [2018-04-11 22:19:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-04-11 22:19:29,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 122. [2018-04-11 22:19:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-04-11 22:19:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2018-04-11 22:19:29,992 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 51 [2018-04-11 22:19:29,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:29,992 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2018-04-11 22:19:29,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-11 22:19:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2018-04-11 22:19:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-04-11 22:19:29,993 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:29,993 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] [2018-04-11 22:19:29,993 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]=== [2018-04-11 22:19:29,993 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 [2018-04-11 22:19:30,000 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:30,017 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:30,102 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:30,231 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:30,232 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-04-11 22:19:30,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-11 22:19:30,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-11 22:19:30,232 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2018-04-11 22:19:30,233 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand 20 states. [2018-04-11 22:19:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:30,570 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2018-04-11 22:19:30,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-11 22:19:30,570 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 61 [2018-04-11 22:19:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:30,571 INFO L225 Difference]: With dead ends: 236 [2018-04-11 22:19:30,571 INFO L226 Difference]: Without dead ends: 122 [2018-04-11 22:19:30,572 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 [2018-04-11 22:19:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-04-11 22:19:30,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-04-11 22:19:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-04-11 22:19:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2018-04-11 22:19:30,578 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 61 [2018-04-11 22:19:30,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:30,579 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2018-04-11 22:19:30,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-11 22:19:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2018-04-11 22:19:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-04-11 22:19:30,580 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:30,580 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] [2018-04-11 22:19:30,580 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]=== [2018-04-11 22:19:30,581 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 [2018-04-11 22:19:30,588 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:30,610 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:30,746 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:31,027 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:31,027 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-11 22:19:31,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-11 22:19:31,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-11 22:19:31,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-04-11 22:19:31,028 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand 32 states. [2018-04-11 22:19:32,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:32,180 INFO L93 Difference]: Finished difference Result 231 states and 249 transitions. [2018-04-11 22:19:32,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 22:19:32,220 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 86 [2018-04-11 22:19:32,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:32,222 INFO L225 Difference]: With dead ends: 231 [2018-04-11 22:19:32,222 INFO L226 Difference]: Without dead ends: 230 [2018-04-11 22:19:32,223 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 [2018-04-11 22:19:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-04-11 22:19:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 193. [2018-04-11 22:19:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-04-11 22:19:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 211 transitions. [2018-04-11 22:19:32,232 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 211 transitions. Word has length 86 [2018-04-11 22:19:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:32,232 INFO L459 AbstractCegarLoop]: Abstraction has 193 states and 211 transitions. [2018-04-11 22:19:32,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-11 22:19:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 211 transitions. [2018-04-11 22:19:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-04-11 22:19:32,234 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:32,234 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] [2018-04-11 22:19:32,234 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]=== [2018-04-11 22:19:32,234 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 [2018-04-11 22:19:32,240 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:32,263 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:32,266 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:19:32,266 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:19:32,269 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:19:32,270 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:19:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:32,480 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:32,847 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:32,847 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2018-04-11 22:19:32,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-04-11 22:19:32,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-04-11 22:19:32,848 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2018-04-11 22:19:32,848 INFO L87 Difference]: Start difference. First operand 193 states and 211 transitions. Second operand 38 states. [2018-04-11 22:19:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:35,163 INFO L93 Difference]: Finished difference Result 219 states and 237 transitions. [2018-04-11 22:19:35,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-11 22:19:35,163 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 87 [2018-04-11 22:19:35,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:35,165 INFO L225 Difference]: With dead ends: 219 [2018-04-11 22:19:35,165 INFO L226 Difference]: Without dead ends: 218 [2018-04-11 22:19:35,167 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 [2018-04-11 22:19:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-04-11 22:19:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 194. [2018-04-11 22:19:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-04-11 22:19:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 205 transitions. [2018-04-11 22:19:35,176 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 205 transitions. Word has length 87 [2018-04-11 22:19:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:35,177 INFO L459 AbstractCegarLoop]: Abstraction has 194 states and 205 transitions. [2018-04-11 22:19:35,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-04-11 22:19:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 205 transitions. [2018-04-11 22:19:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-04-11 22:19:35,178 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:35,178 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] [2018-04-11 22:19:35,178 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]=== [2018-04-11 22:19:35,178 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 [2018-04-11 22:19:35,184 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:35,214 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 3 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:35,366 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 3 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:35,700 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:35,700 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2018-04-11 22:19:35,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-04-11 22:19:35,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-04-11 22:19:35,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2018-04-11 22:19:35,701 INFO L87 Difference]: Start difference. First operand 194 states and 205 transitions. Second operand 36 states. [2018-04-11 22:19:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:36,706 INFO L93 Difference]: Finished difference Result 380 states and 402 transitions. [2018-04-11 22:19:36,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-11 22:19:36,707 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 97 [2018-04-11 22:19:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:36,708 INFO L225 Difference]: With dead ends: 380 [2018-04-11 22:19:36,708 INFO L226 Difference]: Without dead ends: 194 [2018-04-11 22:19:36,709 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-04-11 22:19:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-04-11 22:19:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-04-11 22:19:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-04-11 22:19:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2018-04-11 22:19:36,717 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 97 [2018-04-11 22:19:36,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:36,717 INFO L459 AbstractCegarLoop]: Abstraction has 194 states and 197 transitions. [2018-04-11 22:19:36,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-04-11 22:19:36,717 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 197 transitions. [2018-04-11 22:19:36,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-04-11 22:19:36,719 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:36,719 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] [2018-04-11 22:19:36,720 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]=== [2018-04-11 22:19:36,720 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 [2018-04-11 22:19:36,728 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:36,763 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:37,092 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:38,071 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:38,071 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-11 22:19:38,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-11 22:19:38,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-11 22:19:38,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-04-11 22:19:38,073 INFO L87 Difference]: Start difference. First operand 194 states and 197 transitions. Second operand 64 states. [2018-04-11 22:19:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:43,765 INFO L93 Difference]: Finished difference Result 407 states and 441 transitions. [2018-04-11 22:19:43,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-11 22:19:43,765 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 158 [2018-04-11 22:19:43,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:43,768 INFO L225 Difference]: With dead ends: 407 [2018-04-11 22:19:43,768 INFO L226 Difference]: Without dead ends: 406 [2018-04-11 22:19:43,772 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-04-11 22:19:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-04-11 22:19:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 337. [2018-04-11 22:19:43,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-04-11 22:19:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 371 transitions. [2018-04-11 22:19:43,788 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 371 transitions. Word has length 158 [2018-04-11 22:19:43,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:43,788 INFO L459 AbstractCegarLoop]: Abstraction has 337 states and 371 transitions. [2018-04-11 22:19:43,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-11 22:19:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 371 transitions. [2018-04-11 22:19:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-04-11 22:19:43,790 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:43,791 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] [2018-04-11 22:19:43,791 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]=== [2018-04-11 22:19:43,791 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 [2018-04-11 22:19:43,799 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:43,832 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:43,835 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:19:43,835 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:19:43,838 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:19:43,838 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:19:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:44,476 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:45,557 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:45,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2018-04-11 22:19:45,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-04-11 22:19:45,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-04-11 22:19:45,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=4147, Unknown=0, NotChecked=0, Total=4830 [2018-04-11 22:19:45,559 INFO L87 Difference]: Start difference. First operand 337 states and 371 transitions. Second operand 70 states. [2018-04-11 22:19:54,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:54,192 INFO L93 Difference]: Finished difference Result 387 states and 421 transitions. [2018-04-11 22:19:54,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-11 22:19:54,192 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 159 [2018-04-11 22:19:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:54,194 INFO L225 Difference]: With dead ends: 387 [2018-04-11 22:19:54,194 INFO L226 Difference]: Without dead ends: 386 [2018-04-11 22:19:54,199 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5800 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=5590, Invalid=20492, Unknown=0, NotChecked=0, Total=26082 [2018-04-11 22:19:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-04-11 22:19:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 338. [2018-04-11 22:19:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-04-11 22:19:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 357 transitions. [2018-04-11 22:19:54,209 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 357 transitions. Word has length 159 [2018-04-11 22:19:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:54,209 INFO L459 AbstractCegarLoop]: Abstraction has 338 states and 357 transitions. [2018-04-11 22:19:54,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-04-11 22:19:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 357 transitions. [2018-04-11 22:19:54,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-04-11 22:19:54,210 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:54,210 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] [2018-04-11 22:19:54,210 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]=== [2018-04-11 22:19:54,211 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 [2018-04-11 22:19:54,219 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:54,255 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 3 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:54,664 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:19:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 3 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:55,355 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:19:55,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2018-04-11 22:19:55,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-04-11 22:19:55,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-04-11 22:19:55,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1192, Invalid=3364, Unknown=0, NotChecked=0, Total=4556 [2018-04-11 22:19:55,357 INFO L87 Difference]: Start difference. First operand 338 states and 357 transitions. Second operand 68 states. [2018-04-11 22:19:58,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:19:58,345 INFO L93 Difference]: Finished difference Result 668 states and 706 transitions. [2018-04-11 22:19:58,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-11 22:19:58,346 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 169 [2018-04-11 22:19:58,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:19:58,347 INFO L225 Difference]: With dead ends: 668 [2018-04-11 22:19:58,347 INFO L226 Difference]: Without dead ends: 338 [2018-04-11 22:19:58,349 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6512 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=6516, Invalid=14364, Unknown=0, NotChecked=0, Total=20880 [2018-04-11 22:19:58,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-04-11 22:19:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-04-11 22:19:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-04-11 22:19:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 341 transitions. [2018-04-11 22:19:58,359 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 341 transitions. Word has length 169 [2018-04-11 22:19:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:19:58,360 INFO L459 AbstractCegarLoop]: Abstraction has 338 states and 341 transitions. [2018-04-11 22:19:58,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-04-11 22:19:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 341 transitions. [2018-04-11 22:19:58,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-04-11 22:19:58,364 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:19:58,364 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] [2018-04-11 22:19:58,364 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]=== [2018-04-11 22:19:58,365 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 [2018-04-11 22:19:58,379 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:19:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:19:58,441 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:19:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:19:59,653 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:20:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:20:03,028 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:20:03,029 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-04-11 22:20:03,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-11 22:20:03,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-11 22:20:03,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=14979, Unknown=0, NotChecked=0, Total=16256 [2018-04-11 22:20:03,031 INFO L87 Difference]: Start difference. First operand 338 states and 341 transitions. Second operand 128 states. [2018-04-11 22:20:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:20:08,741 INFO L93 Difference]: Finished difference Result 356 states and 360 transitions. [2018-04-11 22:20:08,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-11 22:20:08,742 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 302 [2018-04-11 22:20:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:20:08,743 INFO L225 Difference]: With dead ends: 356 [2018-04-11 22:20:08,744 INFO L226 Difference]: Without dead ends: 355 [2018-04-11 22:20:08,745 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 [2018-04-11 22:20:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-04-11 22:20:08,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 346. [2018-04-11 22:20:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-04-11 22:20:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 350 transitions. [2018-04-11 22:20:08,759 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 350 transitions. Word has length 302 [2018-04-11 22:20:08,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:20:08,760 INFO L459 AbstractCegarLoop]: Abstraction has 346 states and 350 transitions. [2018-04-11 22:20:08,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-04-11 22:20:08,760 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 350 transitions. [2018-04-11 22:20:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-04-11 22:20:08,762 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:20:08,762 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] [2018-04-11 22:20:08,763 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]=== [2018-04-11 22:20:08,763 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 [2018-04-11 22:20:08,772 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:20:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:20:08,843 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:20:08,847 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:20:08,847 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:20:08,862 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:20:08,863 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:20:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 0 proven. 4309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:20:11,015 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:20:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 0 proven. 4309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:20:14,282 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:20:14,290 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 133 [2018-04-11 22:20:14,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-04-11 22:20:14,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-04-11 22:20:14,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1418, Invalid=16404, Unknown=0, NotChecked=0, Total=17822 [2018-04-11 22:20:14,291 INFO L87 Difference]: Start difference. First operand 346 states and 350 transitions. Second operand 134 states. [2018-04-11 22:20:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:20:24,046 INFO L93 Difference]: Finished difference Result 355 states and 359 transitions. [2018-04-11 22:20:24,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-04-11 22:20:24,047 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 303 [2018-04-11 22:20:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:20:24,048 INFO L225 Difference]: With dead ends: 355 [2018-04-11 22:20:24,048 INFO L226 Difference]: Without dead ends: 354 [2018-04-11 22:20:24,050 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10768 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=4945, Invalid=47725, Unknown=0, NotChecked=0, Total=52670 [2018-04-11 22:20:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-04-11 22:20:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 347. [2018-04-11 22:20:24,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-04-11 22:20:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 351 transitions. [2018-04-11 22:20:24,063 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 351 transitions. Word has length 303 [2018-04-11 22:20:24,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:20:24,063 INFO L459 AbstractCegarLoop]: Abstraction has 347 states and 351 transitions. [2018-04-11 22:20:24,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-04-11 22:20:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 351 transitions. [2018-04-11 22:20:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-04-11 22:20:24,065 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:20:24,065 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] [2018-04-11 22:20:24,065 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]=== [2018-04-11 22:20:24,065 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 [2018-04-11 22:20:24,072 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:20:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:20:24,144 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:20:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 4560 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:20:25,639 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:20:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 4560 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:20:27,946 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:20:27,946 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [69, 69] imperfect sequences [] total 134 [2018-04-11 22:20:27,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-04-11 22:20:27,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-04-11 22:20:27,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3467, Invalid=14355, Unknown=0, NotChecked=0, Total=17822 [2018-04-11 22:20:27,948 INFO L87 Difference]: Start difference. First operand 347 states and 351 transitions. Second operand 134 states. [2018-04-11 22:20:32,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:20:32,128 INFO L93 Difference]: Finished difference Result 679 states and 688 transitions. [2018-04-11 22:20:32,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-04-11 22:20:32,128 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 311 [2018-04-11 22:20:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:20:32,130 INFO L225 Difference]: With dead ends: 679 [2018-04-11 22:20:32,130 INFO L226 Difference]: Without dead ends: 346 [2018-04-11 22:20:32,132 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 487 SyntacticMatches, 2 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12977 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13102, Invalid=40954, Unknown=0, NotChecked=0, Total=54056 [2018-04-11 22:20:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-04-11 22:20:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 343. [2018-04-11 22:20:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-04-11 22:20:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 346 transitions. [2018-04-11 22:20:32,140 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 346 transitions. Word has length 311 [2018-04-11 22:20:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:20:32,141 INFO L459 AbstractCegarLoop]: Abstraction has 343 states and 346 transitions. [2018-04-11 22:20:32,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-04-11 22:20:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 346 transitions. [2018-04-11 22:20:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-04-11 22:20:32,142 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:20:32,142 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] [2018-04-11 22:20:32,142 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]=== [2018-04-11 22:20:32,143 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 [2018-04-11 22:20:32,149 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:20:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:20:32,207 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:20:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 3 proven. 4247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:20:33,511 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:20:33,732 WARN L148 SmtUtils]: Spent 215ms on a formula simplification that was a NOOP. DAG size: 165 [2018-04-11 22:20:33,963 WARN L148 SmtUtils]: Spent 225ms on a formula simplification that was a NOOP. DAG size: 165 [2018-04-11 22:20:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 3 proven. 4247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 22:20:35,136 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:20:35,137 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 131 [2018-04-11 22:20:35,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-04-11 22:20:35,138 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-04-11 22:20:35,139 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3396, Invalid=13634, Unknown=0, NotChecked=0, Total=17030 [2018-04-11 22:20:35,139 INFO L87 Difference]: Start difference. First operand 343 states and 346 transitions. Second operand 131 states. [2018-04-11 22:20:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:20:37,101 INFO L93 Difference]: Finished difference Result 675 states and 681 transitions. [2018-04-11 22:20:37,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-04-11 22:20:37,102 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 313 [2018-04-11 22:20:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:20:37,104 INFO L225 Difference]: With dead ends: 675 [2018-04-11 22:20:37,104 INFO L226 Difference]: Without dead ends: 343 [2018-04-11 22:20:37,107 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 [2018-04-11 22:20:37,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-04-11 22:20:37,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-04-11 22:20:37,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-04-11 22:20:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 345 transitions. [2018-04-11 22:20:37,121 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 345 transitions. Word has length 313 [2018-04-11 22:20:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:20:37,122 INFO L459 AbstractCegarLoop]: Abstraction has 343 states and 345 transitions. [2018-04-11 22:20:37,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-04-11 22:20:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 345 transitions. [2018-04-11 22:20:37,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-04-11 22:20:37,125 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:20:37,125 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] [2018-04-11 22:20:37,125 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]=== [2018-04-11 22:20:37,125 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 [2018-04-11 22:20:37,141 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:20:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:20:37,242 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:20:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-11 22:20:37,293 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:20:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-11 22:20:37,395 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-11 22:20:37,395 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-11 22:20:37,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-11 22:20:37,395 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-11 22:20:37,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-04-11 22:20:37,396 INFO L87 Difference]: Start difference. First operand 343 states and 345 transitions. Second operand 9 states. [2018-04-11 22:20:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:20:37,438 INFO L93 Difference]: Finished difference Result 359 states and 361 transitions. [2018-04-11 22:20:37,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-11 22:20:37,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 322 [2018-04-11 22:20:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:20:37,440 INFO L225 Difference]: With dead ends: 359 [2018-04-11 22:20:37,440 INFO L226 Difference]: Without dead ends: 358 [2018-04-11 22:20:37,440 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 [2018-04-11 22:20:37,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-04-11 22:20:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 341. [2018-04-11 22:20:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-04-11 22:20:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 343 transitions. [2018-04-11 22:20:37,451 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 343 transitions. Word has length 322 [2018-04-11 22:20:37,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:20:37,452 INFO L459 AbstractCegarLoop]: Abstraction has 341 states and 343 transitions. [2018-04-11 22:20:37,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-11 22:20:37,452 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 343 transitions. [2018-04-11 22:20:37,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-04-11 22:20:37,453 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:20:37,453 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] [2018-04-11 22:20:37,453 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]=== [2018-04-11 22:20:37,454 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 [2018-04-11 22:20:37,462 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:20:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:20:37,530 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:20:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-11 22:20:37,598 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:20:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-11 22:20:37,745 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:20:37,745 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-04-11 22:20:37,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 22:20:37,746 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 22:20:37,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-04-11 22:20:37,747 INFO L87 Difference]: Start difference. First operand 341 states and 343 transitions. Second operand 8 states. [2018-04-11 22:20:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:20:37,884 INFO L93 Difference]: Finished difference Result 391 states and 397 transitions. [2018-04-11 22:20:37,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 22:20:37,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2018-04-11 22:20:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:20:37,887 INFO L225 Difference]: With dead ends: 391 [2018-04-11 22:20:37,887 INFO L226 Difference]: Without dead ends: 371 [2018-04-11 22:20:37,888 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 [2018-04-11 22:20:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-04-11 22:20:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 361. [2018-04-11 22:20:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-04-11 22:20:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 365 transitions. [2018-04-11 22:20:37,904 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 365 transitions. Word has length 330 [2018-04-11 22:20:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:20:37,905 INFO L459 AbstractCegarLoop]: Abstraction has 361 states and 365 transitions. [2018-04-11 22:20:37,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 22:20:37,905 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 365 transitions. [2018-04-11 22:20:37,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2018-04-11 22:20:37,916 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:20:37,917 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] [2018-04-11 22:20:37,917 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]=== [2018-04-11 22:20:37,917 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 [2018-04-11 22:20:37,926 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:20:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:20:38,152 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:20:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 41682 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 41646 trivial. 0 not checked. [2018-04-11 22:20:38,571 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:20:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 41682 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 41646 trivial. 0 not checked. [2018-04-11 22:20:38,900 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:20:38,900 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-04-11 22:20:38,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 22:20:38,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 22:20:38,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-04-11 22:20:38,902 INFO L87 Difference]: Start difference. First operand 361 states and 365 transitions. Second operand 16 states. [2018-04-11 22:20:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:20:39,065 INFO L93 Difference]: Finished difference Result 431 states and 443 transitions. [2018-04-11 22:20:39,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-11 22:20:39,065 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 946 [2018-04-11 22:20:39,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:20:39,068 INFO L225 Difference]: With dead ends: 431 [2018-04-11 22:20:39,068 INFO L226 Difference]: Without dead ends: 411 [2018-04-11 22:20:39,069 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1903 GetRequests, 1877 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2018-04-11 22:20:39,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-04-11 22:20:39,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 401. [2018-04-11 22:20:39,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-04-11 22:20:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 409 transitions. [2018-04-11 22:20:39,082 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 409 transitions. Word has length 946 [2018-04-11 22:20:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:20:39,083 INFO L459 AbstractCegarLoop]: Abstraction has 401 states and 409 transitions. [2018-04-11 22:20:39,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 22:20:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 409 transitions. [2018-04-11 22:20:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2179 [2018-04-11 22:20:39,107 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:20:39,107 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] [2018-04-11 22:20:39,108 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]=== [2018-04-11 22:20:39,108 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 [2018-04-11 22:20:39,114 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:20:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:20:39,545 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:20:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 228354 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 228130 trivial. 0 not checked. [2018-04-11 22:20:41,365 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:20:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 228354 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 228130 trivial. 0 not checked. [2018-04-11 22:20:42,986 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:20:42,987 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-04-11 22:20:42,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-11 22:20:42,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-11 22:20:42,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2018-04-11 22:20:42,989 INFO L87 Difference]: Start difference. First operand 401 states and 409 transitions. Second operand 32 states. [2018-04-11 22:20:43,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:20:43,591 INFO L93 Difference]: Finished difference Result 511 states and 535 transitions. [2018-04-11 22:20:43,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 22:20:43,591 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 2178 [2018-04-11 22:20:43,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:20:43,597 INFO L225 Difference]: With dead ends: 511 [2018-04-11 22:20:43,597 INFO L226 Difference]: Without dead ends: 491 [2018-04-11 22:20:43,598 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4383 GetRequests, 4325 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1155, Invalid=2385, Unknown=0, NotChecked=0, Total=3540 [2018-04-11 22:20:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-04-11 22:20:43,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 481. [2018-04-11 22:20:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-04-11 22:20:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 497 transitions. [2018-04-11 22:20:43,625 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 497 transitions. Word has length 2178 [2018-04-11 22:20:43,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:20:43,627 INFO L459 AbstractCegarLoop]: Abstraction has 481 states and 497 transitions. [2018-04-11 22:20:43,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-11 22:20:43,627 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 497 transitions. [2018-04-11 22:20:43,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4643 [2018-04-11 22:20:43,762 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:20:43,763 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] [2018-04-11 22:20:43,764 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]=== [2018-04-11 22:20:43,764 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 [2018-04-11 22:20:43,772 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:20:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:20:44,742 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:20:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1051170 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1050090 trivial. 0 not checked. [2018-04-11 22:20:50,657 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:20:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1051170 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1050090 trivial. 0 not checked. [2018-04-11 22:20:56,598 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:20:56,599 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2018-04-11 22:20:56,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-11 22:20:56,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-11 22:20:56,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2018-04-11 22:20:56,602 INFO L87 Difference]: Start difference. First operand 481 states and 497 transitions. Second operand 64 states. [2018-04-11 22:20:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:20:57,874 INFO L93 Difference]: Finished difference Result 671 states and 719 transitions. [2018-04-11 22:20:57,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-11 22:20:57,874 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 4642 [2018-04-11 22:20:57,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:20:57,882 INFO L225 Difference]: With dead ends: 671 [2018-04-11 22:20:57,882 INFO L226 Difference]: Without dead ends: 651 [2018-04-11 22:20:57,884 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 [2018-04-11 22:20:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2018-04-11 22:20:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 641. [2018-04-11 22:20:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2018-04-11 22:20:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 673 transitions. [2018-04-11 22:20:57,911 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 673 transitions. Word has length 4642 [2018-04-11 22:20:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:20:57,913 INFO L459 AbstractCegarLoop]: Abstraction has 641 states and 673 transitions. [2018-04-11 22:20:57,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-11 22:20:57,913 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 673 transitions. [2018-04-11 22:20:58,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9571 [2018-04-11 22:20:58,291 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:20:58,294 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] [2018-04-11 22:20:58,294 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]=== [2018-04-11 22:20:58,295 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 [2018-04-11 22:20:58,301 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:20:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:20:59,992 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:21:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4494690 backedges. 0 proven. 4712 refuted. 0 times theorem prover too weak. 4489978 trivial. 0 not checked. [2018-04-11 22:21:23,556 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:21:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4494690 backedges. 0 proven. 4712 refuted. 0 times theorem prover too weak. 4489978 trivial. 0 not checked. [2018-04-11 22:21:47,212 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:21:47,213 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-04-11 22:21:47,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-04-11 22:21:47,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-04-11 22:21:47,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2018-04-11 22:21:47,219 INFO L87 Difference]: Start difference. First operand 641 states and 673 transitions. Second operand 65 states. [2018-04-11 22:21:48,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:21:48,706 INFO L93 Difference]: Finished difference Result 681 states and 715 transitions. [2018-04-11 22:21:48,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-11 22:21:48,706 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 9570 [2018-04-11 22:21:48,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:21:48,713 INFO L225 Difference]: With dead ends: 681 [2018-04-11 22:21:48,713 INFO L226 Difference]: Without dead ends: 661 [2018-04-11 22:21:48,715 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 19201 GetRequests, 19013 SyntacticMatches, 63 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5673 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5118, Invalid=10884, Unknown=0, NotChecked=0, Total=16002 [2018-04-11 22:21:48,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2018-04-11 22:21:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 651. [2018-04-11 22:21:48,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2018-04-11 22:21:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 684 transitions. [2018-04-11 22:21:48,738 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 684 transitions. Word has length 9570 [2018-04-11 22:21:48,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:21:48,741 INFO L459 AbstractCegarLoop]: Abstraction has 651 states and 684 transitions. [2018-04-11 22:21:48,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-04-11 22:21:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 684 transitions. [2018-04-11 22:21:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9879 [2018-04-11 22:21:49,142 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:21:49,145 INFO L355 BasicCegarLoop]: trace histogram [1056, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 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] [2018-04-11 22:21:49,145 INFO L408 AbstractCegarLoop]: === Iteration 28 === [__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]=== [2018-04-11 22:21:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash 609377232, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:21:49,153 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:21:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:21:50,933 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 22:21:52,388 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 22:21:52,388 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:52,391 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:52,391 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-11 22:21:52,542 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:52,543 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:52,543 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:52,547 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:52,547 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:52,651 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:52,653 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:52,653 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:52,658 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:52,658 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:52,783 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:52,785 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:52,785 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:52,790 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:52,791 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:52,938 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:52,939 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:52,940 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:52,946 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:52,947 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:53,066 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:53,067 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:53,068 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,073 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,073 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:53,192 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:53,193 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:53,193 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,198 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,198 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:53,323 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:53,324 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:53,325 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,330 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,330 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:53,465 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:53,466 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:53,467 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,472 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,472 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:53,608 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:53,609 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:53,609 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,613 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,614 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:53,737 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:53,738 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:53,739 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,743 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,743 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:53,866 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:53,867 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:53,868 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,872 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:53,872 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:53,997 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:53,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:53,999 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,003 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,003 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:54,130 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:54,131 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:54,131 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,136 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,136 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:54,265 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:54,267 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:54,267 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,271 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,272 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:54,404 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:54,406 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:54,406 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,410 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,410 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:54,544 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:54,545 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:54,545 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,549 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,549 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:54,696 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:54,697 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:54,697 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,702 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,702 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:54,840 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:54,841 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:54,841 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,846 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,847 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:54,985 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:54,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:54,987 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,991 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:54,992 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:55,133 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:55,134 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:55,135 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,139 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,139 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:55,283 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:55,285 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:55,285 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,289 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,289 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:55,434 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:55,435 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:55,435 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,443 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,444 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:55,591 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:55,592 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:55,592 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,596 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,597 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:55,744 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:55,745 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:55,746 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,750 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,750 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:55,905 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:55,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:55,907 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,911 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:55,911 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:56,075 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:56,077 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:56,078 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,087 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,088 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:56,241 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:56,242 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:56,243 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,247 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,247 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:56,403 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:56,404 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:56,404 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,408 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,408 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:56,567 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:56,569 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:56,569 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,573 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,573 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:56,731 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:56,732 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:56,733 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,738 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,738 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-11 22:21:56,903 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 22:21:56,904 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-11 22:21:56,905 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,909 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 22:21:56,909 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:5 [2018-04-11 22:22:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4789504 backedges. 4590 proven. 294781 refuted. 0 times theorem prover too weak. 4490133 trivial. 0 not checked. [2018-04-11 22:22:24,716 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-11 22:22:30,308 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-04-11 22:22:30,308 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 22:22:30,309 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-04-11 22:22:30,310 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 22:22:30,314 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-11 22:22:30,314 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:14, output treesize:7 [2018-04-11 22:22:30,544 WARN L148 SmtUtils]: Spent 225ms on a formula simplification that was a NOOP. DAG size: 167 [2018-04-11 22:22:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4789504 backedges. 0 proven. 294931 refuted. 0 times theorem prover too weak. 4494573 trivial. 0 not checked. [2018-04-11 22:22:59,299 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 22:22:59,301 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 76] total 137 [2018-04-11 22:22:59,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-04-11 22:22:59,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-04-11 22:22:59,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1332, Invalid=17300, Unknown=0, NotChecked=0, Total=18632 [2018-04-11 22:22:59,308 INFO L87 Difference]: Start difference. First operand 651 states and 684 transitions. Second operand 137 states. [2018-04-11 22:23:10,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 22:23:10,934 INFO L93 Difference]: Finished difference Result 661 states and 693 transitions. [2018-04-11 22:23:10,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-04-11 22:23:10,935 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 9878 [2018-04-11 22:23:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 22:23:10,958 INFO L225 Difference]: With dead ends: 661 [2018-04-11 22:23:10,958 INFO L226 Difference]: Without dead ends: 656 [2018-04-11 22:23:10,967 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 19884 GetRequests, 19526 SyntacticMatches, 94 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17218 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=5702, Invalid=64788, Unknown=0, NotChecked=0, Total=70490 [2018-04-11 22:23:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2018-04-11 22:23:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 652. [2018-04-11 22:23:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2018-04-11 22:23:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 685 transitions. [2018-04-11 22:23:11,008 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 685 transitions. Word has length 9878 [2018-04-11 22:23:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 22:23:11,014 INFO L459 AbstractCegarLoop]: Abstraction has 652 states and 685 transitions. [2018-04-11 22:23:11,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-04-11 22:23:11,014 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 685 transitions. [2018-04-11 22:23:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9881 [2018-04-11 22:23:11,495 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 22:23:11,498 INFO L355 BasicCegarLoop]: trace histogram [1056, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 1024, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 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] [2018-04-11 22:23:11,498 INFO L408 AbstractCegarLoop]: === Iteration 29 === [__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]=== [2018-04-11 22:23:11,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1786407478, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-11 22:23:11,507 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-11 22:23:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 22:23:13,245 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown