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 0.1.23-453dfda-m [2018-04-09 22:02:49,692 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-09 22:02:49,694 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-09 22:02:49,707 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-09 22:02:49,707 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-09 22:02:49,708 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-09 22:02:49,709 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-09 22:02:49,711 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-09 22:02:49,713 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-09 22:02:49,714 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-09 22:02:49,714 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-09 22:02:49,715 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-09 22:02:49,716 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-09 22:02:49,717 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-09 22:02:49,718 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-09 22:02:49,720 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-09 22:02:49,722 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-09 22:02:49,723 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-09 22:02:49,725 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-09 22:02:49,726 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-09 22:02:49,728 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-09 22:02:49,728 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-09 22:02:49,729 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-09 22:02:49,730 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-09 22:02:49,730 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-09 22:02:49,732 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-09 22:02:49,732 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-09 22:02:49,733 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-09 22:02:49,733 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-09 22:02:49,734 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-09 22:02:49,734 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-09 22:02:49,734 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 [2018-04-09 22:02:49,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-09 22:02:49,757 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-09 22:02:49,757 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-09 22:02:49,757 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-09 22:02:49,757 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-09 22:02:49,758 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-09 22:02:49,758 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-09 22:02:49,758 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-09 22:02:49,758 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-09 22:02:49,758 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-09 22:02:49,759 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-09 22:02:49,759 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-09 22:02:49,759 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-09 22:02:49,759 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-09 22:02:49,759 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-09 22:02:49,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-09 22:02:49,759 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-09 22:02:49,760 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-09 22:02:49,760 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-09 22:02:49,760 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-09 22:02:49,760 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-09 22:02:49,760 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-09 22:02:49,761 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-09 22:02:49,761 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-09 22:02:49,761 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-09 22:02:49,761 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-09 22:02:49,761 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-09 22:02:49,761 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-09 22:02:49,762 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-09 22:02:49,762 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-09 22:02:49,762 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-09 22:02:49,762 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-09 22:02:49,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 22:02:49,762 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-09 22:02:49,763 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-09 22:02:49,763 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-09 22:02:49,763 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-09 22:02:49,764 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-09 22:02:49,795 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-09 22:02:49,804 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-09 22:02:49,808 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-09 22:02:49,809 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-09 22:02:49,809 INFO L276 PluginConnector]: CDTParser initialized [2018-04-09 22:02:49,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-04-09 22:02:50,087 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGb91746a93 [2018-04-09 22:02:50,220 INFO L287 CDTParser]: IsIndexed: true [2018-04-09 22:02:50,220 INFO L288 CDTParser]: Found 1 translation units. [2018-04-09 22:02:50,221 INFO L168 CDTParser]: Scanning ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-04-09 22:02:50,222 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-09 22:02:50,222 INFO L215 ultiparseSymbolTable]: [2018-04-09 22:02:50,222 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-09 22:02:50,222 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo ('foo') in ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-04-09 22:02:50,222 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-04-09 22:02:50,222 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-09 22:02:50,222 INFO L233 ultiparseSymbolTable]: [2018-04-09 22:02:50,237 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGb91746a93 [2018-04-09 22:02:50,242 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-09 22:02:50,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-09 22:02:50,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-09 22:02:50,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-09 22:02:50,251 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-09 22:02:50,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.04 10:02:50" (1/1) ... [2018-04-09 22:02:50,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606aa564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50, skipping insertion in model container [2018-04-09 22:02:50,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.04 10:02:50" (1/1) ... [2018-04-09 22:02:50,268 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-09 22:02:50,280 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-09 22:02:50,424 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-09 22:02:50,444 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-09 22:02:50,448 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-09 22:02:50,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50 WrapperNode [2018-04-09 22:02:50,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-09 22:02:50,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-09 22:02:50,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-09 22:02:50,457 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-09 22:02:50,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50" (1/1) ... [2018-04-09 22:02:50,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50" (1/1) ... [2018-04-09 22:02:50,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50" (1/1) ... [2018-04-09 22:02:50,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50" (1/1) ... [2018-04-09 22:02:50,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50" (1/1) ... [2018-04-09 22:02:50,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50" (1/1) ... [2018-04-09 22:02:50,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50" (1/1) ... [2018-04-09 22:02:50,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-09 22:02:50,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-09 22:02:50,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-09 22:02:50,490 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-09 22:02:50,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50" (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 [2018-04-09 22:02:50,553 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-09 22:02:50,553 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-09 22:02:50,553 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-04-09 22:02:50,553 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-09 22:02:50,553 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-04-09 22:02:50,553 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-09 22:02:50,554 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-09 22:02:50,554 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-09 22:02:50,554 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-09 22:02:50,554 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-09 22:02:50,554 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-09 22:02:50,554 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-09 22:02:50,554 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-09 22:02:50,798 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-09 22:02:50,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.04 10:02:50 BoogieIcfgContainer [2018-04-09 22:02:50,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-09 22:02:50,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-09 22:02:50,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-09 22:02:50,802 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-09 22:02:50,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.04 10:02:50" (1/3) ... [2018-04-09 22:02:50,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486770ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.04 10:02:50, skipping insertion in model container [2018-04-09 22:02:50,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 10:02:50" (2/3) ... [2018-04-09 22:02:50,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486770ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.04 10:02:50, skipping insertion in model container [2018-04-09 22:02:50,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.04 10:02:50" (3/3) ... [2018-04-09 22:02:50,805 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-04-09 22:02:50,813 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-09 22:02:50,821 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-04-09 22:02:50,863 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-09 22:02:50,864 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-09 22:02:50,864 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-09 22:02:50,865 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-09 22:02:50,865 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-09 22:02:50,865 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-09 22:02:50,865 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-09 22:02:50,865 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-09 22:02:50,865 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-09 22:02:50,866 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-09 22:02:50,881 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-04-09 22:02:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-04-09 22:02:50,885 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:50,886 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:02:50,886 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]=== [2018-04-09 22:02:50,889 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 [2018-04-09 22:02:50,902 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:50,942 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:50,995 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:51,048 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:02:51,048 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-04-09 22:02:51,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-09 22:02:51,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-09 22:02:51,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-04-09 22:02:51,061 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 5 states. [2018-04-09 22:02:51,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:51,154 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2018-04-09 22:02:51,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-09 22:02:51,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-04-09 22:02:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:51,164 INFO L225 Difference]: With dead ends: 137 [2018-04-09 22:02:51,164 INFO L226 Difference]: Without dead ends: 81 [2018-04-09 22:02:51,167 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 [2018-04-09 22:02:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-04-09 22:02:51,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 65. [2018-04-09 22:02:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-04-09 22:02:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2018-04-09 22:02:51,210 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 14 [2018-04-09 22:02:51,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:51,210 INFO L459 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2018-04-09 22:02:51,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-09 22:02:51,210 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2018-04-09 22:02:51,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-09 22:02:51,211 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:51,211 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] [2018-04-09 22:02:51,211 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]=== [2018-04-09 22:02:51,211 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 [2018-04-09 22:02:51,225 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:51,243 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:51,250 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:51,302 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:02:51,302 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-09 22:02:51,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-09 22:02:51,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-09 22:02:51,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-09 22:02:51,304 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 4 states. [2018-04-09 22:02:51,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:51,338 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-04-09 22:02:51,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-09 22:02:51,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-04-09 22:02:51,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:51,342 INFO L225 Difference]: With dead ends: 79 [2018-04-09 22:02:51,342 INFO L226 Difference]: Without dead ends: 78 [2018-04-09 22:02:51,343 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 [2018-04-09 22:02:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-04-09 22:02:51,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2018-04-09 22:02:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-04-09 22:02:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2018-04-09 22:02:51,353 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 23 [2018-04-09 22:02:51,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:51,353 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2018-04-09 22:02:51,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-09 22:02:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2018-04-09 22:02:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-09 22:02:51,354 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:51,354 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] [2018-04-09 22:02:51,354 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]=== [2018-04-09 22:02:51,355 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 [2018-04-09 22:02:51,362 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:51,379 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:51,415 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 [2018-04-09 22:02:51,417 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:02:51,420 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:02:51,420 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-09 22:02:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:51,442 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:51,469 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:02:51,469 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2018-04-09 22:02:51,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-09 22:02:51,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-09 22:02:51,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-09 22:02:51,470 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 5 states. [2018-04-09 22:02:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:51,588 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2018-04-09 22:02:51,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-09 22:02:51,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-04-09 22:02:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:51,590 INFO L225 Difference]: With dead ends: 68 [2018-04-09 22:02:51,590 INFO L226 Difference]: Without dead ends: 67 [2018-04-09 22:02:51,591 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 [2018-04-09 22:02:51,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-04-09 22:02:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-04-09 22:02:51,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-04-09 22:02:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-04-09 22:02:51,599 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 24 [2018-04-09 22:02:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:51,600 INFO L459 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-04-09 22:02:51,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-09 22:02:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-04-09 22:02:51,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-09 22:02:51,601 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:51,601 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] [2018-04-09 22:02:51,601 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]=== [2018-04-09 22:02:51,601 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 [2018-04-09 22:02:51,624 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:51,641 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:51,663 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 [2018-04-09 22:02:51,663 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:02:51,669 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:02:51,669 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:02:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:51,701 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:51,808 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:02:51,808 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2018-04-09 22:02:51,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-09 22:02:51,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-09 22:02:51,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-04-09 22:02:51,809 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 10 states. [2018-04-09 22:02:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:51,928 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2018-04-09 22:02:51,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-09 22:02:51,929 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-04-09 22:02:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:51,930 INFO L225 Difference]: With dead ends: 76 [2018-04-09 22:02:51,930 INFO L226 Difference]: Without dead ends: 75 [2018-04-09 22:02:51,931 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 [2018-04-09 22:02:51,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-04-09 22:02:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2018-04-09 22:02:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-04-09 22:02:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2018-04-09 22:02:51,939 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 24 [2018-04-09 22:02:51,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:51,939 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2018-04-09 22:02:51,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-09 22:02:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2018-04-09 22:02:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-09 22:02:51,941 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:51,941 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 22:02:51,941 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]=== [2018-04-09 22:02:51,941 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 [2018-04-09 22:02:51,952 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:51,973 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:52,025 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:52,108 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:02:52,108 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-04-09 22:02:52,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-09 22:02:52,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-09 22:02:52,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-04-09 22:02:52,109 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 8 states. [2018-04-09 22:02:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:52,363 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2018-04-09 22:02:52,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-09 22:02:52,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-04-09 22:02:52,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:52,365 INFO L225 Difference]: With dead ends: 102 [2018-04-09 22:02:52,365 INFO L226 Difference]: Without dead ends: 101 [2018-04-09 22:02:52,365 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 [2018-04-09 22:02:52,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-04-09 22:02:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 85. [2018-04-09 22:02:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-04-09 22:02:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2018-04-09 22:02:52,374 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 32 [2018-04-09 22:02:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:52,375 INFO L459 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2018-04-09 22:02:52,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-09 22:02:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2018-04-09 22:02:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-04-09 22:02:52,376 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:52,376 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] [2018-04-09 22:02:52,377 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]=== [2018-04-09 22:02:52,377 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 [2018-04-09 22:02:52,387 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:52,402 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:52,406 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 [2018-04-09 22:02:52,407 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:02:52,411 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:02:52,411 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:02:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:52,476 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:52,638 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:02:52,638 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-04-09 22:02:52,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-09 22:02:52,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-09 22:02:52,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-04-09 22:02:52,640 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 14 states. [2018-04-09 22:02:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:53,011 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2018-04-09 22:02:53,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-09 22:02:53,012 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2018-04-09 22:02:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:53,013 INFO L225 Difference]: With dead ends: 96 [2018-04-09 22:02:53,013 INFO L226 Difference]: Without dead ends: 95 [2018-04-09 22:02:53,014 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2018-04-09 22:02:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-04-09 22:02:53,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2018-04-09 22:02:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-09 22:02:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2018-04-09 22:02:53,023 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 33 [2018-04-09 22:02:53,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:53,023 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2018-04-09 22:02:53,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-09 22:02:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2018-04-09 22:02:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-09 22:02:53,025 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:53,025 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] [2018-04-09 22:02:53,025 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]=== [2018-04-09 22:02:53,025 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 [2018-04-09 22:02:53,031 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:53,043 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:53,057 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:53,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:53,119 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:02:53,119 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-09 22:02:53,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-09 22:02:53,120 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-09 22:02:53,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-04-09 22:02:53,121 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 8 states. [2018-04-09 22:02:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:53,177 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2018-04-09 22:02:53,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-09 22:02:53,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-04-09 22:02:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:53,179 INFO L225 Difference]: With dead ends: 161 [2018-04-09 22:02:53,179 INFO L226 Difference]: Without dead ends: 86 [2018-04-09 22:02:53,180 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 [2018-04-09 22:02:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-04-09 22:02:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-04-09 22:02:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-09 22:02:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2018-04-09 22:02:53,189 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 34 [2018-04-09 22:02:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:53,190 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2018-04-09 22:02:53,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-09 22:02:53,190 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2018-04-09 22:02:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-04-09 22:02:53,191 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:53,192 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] [2018-04-09 22:02:53,192 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]=== [2018-04-09 22:02:53,192 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 [2018-04-09 22:02:53,199 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:53,215 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:53,244 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:53,324 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:02:53,324 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-04-09 22:02:53,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-09 22:02:53,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-09 22:02:53,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-04-09 22:02:53,326 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 12 states. [2018-04-09 22:02:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:53,434 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2018-04-09 22:02:53,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-09 22:02:53,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2018-04-09 22:02:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:53,435 INFO L225 Difference]: With dead ends: 164 [2018-04-09 22:02:53,435 INFO L226 Difference]: Without dead ends: 86 [2018-04-09 22:02:53,436 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 [2018-04-09 22:02:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-04-09 22:02:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-04-09 22:02:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-09 22:02:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2018-04-09 22:02:53,441 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 43 [2018-04-09 22:02:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:53,442 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2018-04-09 22:02:53,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-09 22:02:53,442 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2018-04-09 22:02:53,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-04-09 22:02:53,443 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:53,443 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] [2018-04-09 22:02:53,443 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]=== [2018-04-09 22:02:53,443 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 [2018-04-09 22:02:53,449 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:53,464 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:53,496 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:53,633 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:02:53,633 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-04-09 22:02:53,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-09 22:02:53,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-09 22:02:53,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-09 22:02:53,634 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 16 states. [2018-04-09 22:02:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:53,977 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2018-04-09 22:02:53,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-09 22:02:53,978 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2018-04-09 22:02:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:53,979 INFO L225 Difference]: With dead ends: 143 [2018-04-09 22:02:53,979 INFO L226 Difference]: Without dead ends: 142 [2018-04-09 22:02:53,980 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 [2018-04-09 22:02:53,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-04-09 22:02:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 121. [2018-04-09 22:02:53,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-04-09 22:02:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2018-04-09 22:02:53,989 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 50 [2018-04-09 22:02:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:53,990 INFO L459 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2018-04-09 22:02:53,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-09 22:02:53,990 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2018-04-09 22:02:53,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-04-09 22:02:53,991 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:53,991 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] [2018-04-09 22:02:53,991 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]=== [2018-04-09 22:02:53,991 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 [2018-04-09 22:02:53,999 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:54,020 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:54,028 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 [2018-04-09 22:02:54,028 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:02:54,031 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:02:54,031 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:02:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:54,157 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:54,356 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:02:54,356 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-04-09 22:02:54,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-09 22:02:54,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-09 22:02:54,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2018-04-09 22:02:54,357 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 22 states. [2018-04-09 22:02:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:55,023 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2018-04-09 22:02:55,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-09 22:02:55,024 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2018-04-09 22:02:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:55,025 INFO L225 Difference]: With dead ends: 135 [2018-04-09 22:02:55,025 INFO L226 Difference]: Without dead ends: 134 [2018-04-09 22:02:55,026 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 [2018-04-09 22:02:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-04-09 22:02:55,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 122. [2018-04-09 22:02:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-04-09 22:02:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2018-04-09 22:02:55,033 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 51 [2018-04-09 22:02:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:55,034 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2018-04-09 22:02:55,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-09 22:02:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2018-04-09 22:02:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-04-09 22:02:55,035 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:55,035 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] [2018-04-09 22:02:55,035 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]=== [2018-04-09 22:02:55,035 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 [2018-04-09 22:02:55,043 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:55,062 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:55,149 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:55,271 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:02:55,271 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-04-09 22:02:55,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-09 22:02:55,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-09 22:02:55,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2018-04-09 22:02:55,272 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand 20 states. [2018-04-09 22:02:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:55,583 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2018-04-09 22:02:55,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-04-09 22:02:55,583 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 61 [2018-04-09 22:02:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:55,584 INFO L225 Difference]: With dead ends: 236 [2018-04-09 22:02:55,584 INFO L226 Difference]: Without dead ends: 122 [2018-04-09 22:02:55,585 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 [2018-04-09 22:02:55,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-04-09 22:02:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-04-09 22:02:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-04-09 22:02:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2018-04-09 22:02:55,592 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 61 [2018-04-09 22:02:55,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:55,592 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2018-04-09 22:02:55,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-09 22:02:55,592 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2018-04-09 22:02:55,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-04-09 22:02:55,593 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:55,593 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] [2018-04-09 22:02:55,593 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]=== [2018-04-09 22:02:55,593 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 [2018-04-09 22:02:55,599 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:55,624 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:55,761 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:56,034 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:02:56,035 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-04-09 22:02:56,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-09 22:02:56,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-09 22:02:56,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2018-04-09 22:02:56,036 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand 32 states. [2018-04-09 22:02:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:57,156 INFO L93 Difference]: Finished difference Result 231 states and 249 transitions. [2018-04-09 22:02:57,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-09 22:02:57,157 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 86 [2018-04-09 22:02:57,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:57,158 INFO L225 Difference]: With dead ends: 231 [2018-04-09 22:02:57,158 INFO L226 Difference]: Without dead ends: 230 [2018-04-09 22:02:57,159 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 [2018-04-09 22:02:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-04-09 22:02:57,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 193. [2018-04-09 22:02:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-04-09 22:02:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 211 transitions. [2018-04-09 22:02:57,167 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 211 transitions. Word has length 86 [2018-04-09 22:02:57,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:02:57,167 INFO L459 AbstractCegarLoop]: Abstraction has 193 states and 211 transitions. [2018-04-09 22:02:57,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-09 22:02:57,168 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 211 transitions. [2018-04-09 22:02:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-04-09 22:02:57,168 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:02:57,168 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] [2018-04-09 22:02:57,168 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]=== [2018-04-09 22:02:57,169 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 [2018-04-09 22:02:57,174 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:02:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:02:57,194 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:02:57,197 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 [2018-04-09 22:02:57,197 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:02:57,200 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:02:57,200 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:02:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:57,404 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:02:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:02:57,761 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:02:57,761 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2018-04-09 22:02:57,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-04-09 22:02:57,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-04-09 22:02:57,762 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2018-04-09 22:02:57,762 INFO L87 Difference]: Start difference. First operand 193 states and 211 transitions. Second operand 38 states. [2018-04-09 22:02:59,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:02:59,993 INFO L93 Difference]: Finished difference Result 219 states and 237 transitions. [2018-04-09 22:02:59,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-09 22:02:59,993 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 87 [2018-04-09 22:02:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:02:59,995 INFO L225 Difference]: With dead ends: 219 [2018-04-09 22:02:59,995 INFO L226 Difference]: Without dead ends: 218 [2018-04-09 22:02:59,996 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1510, Invalid=5132, Unknown=0, NotChecked=0, Total=6642 [2018-04-09 22:02:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-04-09 22:03:00,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 194. [2018-04-09 22:03:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-04-09 22:03:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 205 transitions. [2018-04-09 22:03:00,004 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 205 transitions. Word has length 87 [2018-04-09 22:03:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:03:00,004 INFO L459 AbstractCegarLoop]: Abstraction has 194 states and 205 transitions. [2018-04-09 22:03:00,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-04-09 22:03:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 205 transitions. [2018-04-09 22:03:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-04-09 22:03:00,005 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:03:00,005 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] [2018-04-09 22:03:00,005 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]=== [2018-04-09 22:03:00,005 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 [2018-04-09 22:03:00,012 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:03:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:03:00,036 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:03:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 3 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:00,220 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:03:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 3 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:00,513 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:03:00,513 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2018-04-09 22:03:00,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-04-09 22:03:00,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-04-09 22:03:00,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2018-04-09 22:03:00,515 INFO L87 Difference]: Start difference. First operand 194 states and 205 transitions. Second operand 36 states. [2018-04-09 22:03:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:03:01,384 INFO L93 Difference]: Finished difference Result 380 states and 402 transitions. [2018-04-09 22:03:01,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-04-09 22:03:01,384 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 97 [2018-04-09 22:03:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:03:01,385 INFO L225 Difference]: With dead ends: 380 [2018-04-09 22:03:01,385 INFO L226 Difference]: Without dead ends: 194 [2018-04-09 22:03:01,387 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2018-04-09 22:03:01,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-04-09 22:03:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-04-09 22:03:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-04-09 22:03:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2018-04-09 22:03:01,393 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 97 [2018-04-09 22:03:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:03:01,394 INFO L459 AbstractCegarLoop]: Abstraction has 194 states and 197 transitions. [2018-04-09 22:03:01,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-04-09 22:03:01,394 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 197 transitions. [2018-04-09 22:03:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-04-09 22:03:01,395 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:03:01,395 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] [2018-04-09 22:03:01,395 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]=== [2018-04-09 22:03:01,395 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 [2018-04-09 22:03:01,401 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:03:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:03:01,438 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:03:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:01,762 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:03:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:02,698 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:03:02,698 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-04-09 22:03:02,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-09 22:03:02,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-09 22:03:02,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2018-04-09 22:03:02,700 INFO L87 Difference]: Start difference. First operand 194 states and 197 transitions. Second operand 64 states. [2018-04-09 22:03:08,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:03:08,087 INFO L93 Difference]: Finished difference Result 407 states and 441 transitions. [2018-04-09 22:03:08,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-09 22:03:08,088 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 158 [2018-04-09 22:03:08,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:03:08,090 INFO L225 Difference]: With dead ends: 407 [2018-04-09 22:03:08,090 INFO L226 Difference]: Without dead ends: 406 [2018-04-09 22:03:08,095 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3452 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4624, Invalid=14282, Unknown=0, NotChecked=0, Total=18906 [2018-04-09 22:03:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-04-09 22:03:08,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 337. [2018-04-09 22:03:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-04-09 22:03:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 371 transitions. [2018-04-09 22:03:08,110 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 371 transitions. Word has length 158 [2018-04-09 22:03:08,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:03:08,111 INFO L459 AbstractCegarLoop]: Abstraction has 337 states and 371 transitions. [2018-04-09 22:03:08,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-09 22:03:08,111 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 371 transitions. [2018-04-09 22:03:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-04-09 22:03:08,113 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:03:08,113 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] [2018-04-09 22:03:08,113 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]=== [2018-04-09 22:03:08,113 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 [2018-04-09 22:03:08,122 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:03:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:03:08,155 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:03:08,160 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 [2018-04-09 22:03:08,161 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:03:08,167 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:03:08,167 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:03:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:08,769 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:03:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:09,826 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:03:09,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2018-04-09 22:03:09,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-04-09 22:03:09,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-04-09 22:03:09,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=4147, Unknown=0, NotChecked=0, Total=4830 [2018-04-09 22:03:09,828 INFO L87 Difference]: Start difference. First operand 337 states and 371 transitions. Second operand 70 states. [2018-04-09 22:03:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:03:18,264 INFO L93 Difference]: Finished difference Result 387 states and 421 transitions. [2018-04-09 22:03:18,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-09 22:03:18,264 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 159 [2018-04-09 22:03:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:03:18,267 INFO L225 Difference]: With dead ends: 387 [2018-04-09 22:03:18,267 INFO L226 Difference]: Without dead ends: 386 [2018-04-09 22:03:18,272 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5800 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5590, Invalid=20492, Unknown=0, NotChecked=0, Total=26082 [2018-04-09 22:03:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-04-09 22:03:18,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 338. [2018-04-09 22:03:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-04-09 22:03:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 357 transitions. [2018-04-09 22:03:18,282 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 357 transitions. Word has length 159 [2018-04-09 22:03:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:03:18,282 INFO L459 AbstractCegarLoop]: Abstraction has 338 states and 357 transitions. [2018-04-09 22:03:18,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-04-09 22:03:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 357 transitions. [2018-04-09 22:03:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-04-09 22:03:18,283 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:03:18,283 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] [2018-04-09 22:03:18,283 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]=== [2018-04-09 22:03:18,283 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 [2018-04-09 22:03:18,290 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:03:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:03:18,324 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:03:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 3 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:18,722 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:03:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 3 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:19,417 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:03:19,417 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 68 [2018-04-09 22:03:19,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-04-09 22:03:19,418 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-04-09 22:03:19,418 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1192, Invalid=3364, Unknown=0, NotChecked=0, Total=4556 [2018-04-09 22:03:19,419 INFO L87 Difference]: Start difference. First operand 338 states and 357 transitions. Second operand 68 states. [2018-04-09 22:03:22,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:03:22,087 INFO L93 Difference]: Finished difference Result 668 states and 706 transitions. [2018-04-09 22:03:22,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-09 22:03:22,087 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 169 [2018-04-09 22:03:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:03:22,089 INFO L225 Difference]: With dead ends: 668 [2018-04-09 22:03:22,089 INFO L226 Difference]: Without dead ends: 338 [2018-04-09 22:03:22,091 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6512 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6516, Invalid=14364, Unknown=0, NotChecked=0, Total=20880 [2018-04-09 22:03:22,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-04-09 22:03:22,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2018-04-09 22:03:22,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-04-09 22:03:22,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 341 transitions. [2018-04-09 22:03:22,106 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 341 transitions. Word has length 169 [2018-04-09 22:03:22,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:03:22,106 INFO L459 AbstractCegarLoop]: Abstraction has 338 states and 341 transitions. [2018-04-09 22:03:22,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-04-09 22:03:22,107 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 341 transitions. [2018-04-09 22:03:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-04-09 22:03:22,111 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:03:22,111 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] [2018-04-09 22:03:22,111 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]=== [2018-04-09 22:03:22,111 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 [2018-04-09 22:03:22,120 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:03:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:03:22,186 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:03:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:23,404 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:03:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:26,782 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:03:26,783 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-04-09 22:03:26,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-04-09 22:03:26,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-04-09 22:03:26,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=14979, Unknown=0, NotChecked=0, Total=16256 [2018-04-09 22:03:26,785 INFO L87 Difference]: Start difference. First operand 338 states and 341 transitions. Second operand 128 states. [2018-04-09 22:03:32,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:03:32,250 INFO L93 Difference]: Finished difference Result 356 states and 360 transitions. [2018-04-09 22:03:32,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-09 22:03:32,250 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 302 [2018-04-09 22:03:32,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:03:32,251 INFO L225 Difference]: With dead ends: 356 [2018-04-09 22:03:32,251 INFO L226 Difference]: Without dead ends: 355 [2018-04-09 22:03:32,253 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 [2018-04-09 22:03:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-04-09 22:03:32,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 346. [2018-04-09 22:03:32,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-04-09 22:03:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 350 transitions. [2018-04-09 22:03:32,261 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 350 transitions. Word has length 302 [2018-04-09 22:03:32,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:03:32,262 INFO L459 AbstractCegarLoop]: Abstraction has 346 states and 350 transitions. [2018-04-09 22:03:32,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-04-09 22:03:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 350 transitions. [2018-04-09 22:03:32,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-04-09 22:03:32,263 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:03:32,263 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] [2018-04-09 22:03:32,263 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]=== [2018-04-09 22:03:32,263 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 [2018-04-09 22:03:32,283 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:03:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:03:32,358 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:03:32,373 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 [2018-04-09 22:03:32,373 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:03:32,376 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:03:32,376 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:03:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 0 proven. 4309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:34,480 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:03:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4309 backedges. 0 proven. 4309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:37,707 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:03:37,719 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 133 [2018-04-09 22:03:37,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-04-09 22:03:37,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-04-09 22:03:37,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1418, Invalid=16404, Unknown=0, NotChecked=0, Total=17822 [2018-04-09 22:03:37,721 INFO L87 Difference]: Start difference. First operand 346 states and 350 transitions. Second operand 134 states. [2018-04-09 22:03:47,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:03:47,358 INFO L93 Difference]: Finished difference Result 355 states and 359 transitions. [2018-04-09 22:03:47,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-04-09 22:03:47,358 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 303 [2018-04-09 22:03:47,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:03:47,359 INFO L225 Difference]: With dead ends: 355 [2018-04-09 22:03:47,360 INFO L226 Difference]: Without dead ends: 354 [2018-04-09 22:03:47,361 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10768 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=4945, Invalid=47725, Unknown=0, NotChecked=0, Total=52670 [2018-04-09 22:03:47,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-04-09 22:03:47,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 347. [2018-04-09 22:03:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-04-09 22:03:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 351 transitions. [2018-04-09 22:03:47,375 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 351 transitions. Word has length 303 [2018-04-09 22:03:47,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:03:47,376 INFO L459 AbstractCegarLoop]: Abstraction has 347 states and 351 transitions. [2018-04-09 22:03:47,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-04-09 22:03:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 351 transitions. [2018-04-09 22:03:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-04-09 22:03:47,378 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:03:47,379 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] [2018-04-09 22:03:47,379 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]=== [2018-04-09 22:03:47,379 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 [2018-04-09 22:03:47,389 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:03:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:03:47,447 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:03:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 4560 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:48,866 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:03:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 4560 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:51,158 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:03:51,158 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [69, 69] imperfect sequences [] total 134 [2018-04-09 22:03:51,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-04-09 22:03:51,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-04-09 22:03:51,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3467, Invalid=14355, Unknown=0, NotChecked=0, Total=17822 [2018-04-09 22:03:51,160 INFO L87 Difference]: Start difference. First operand 347 states and 351 transitions. Second operand 134 states. [2018-04-09 22:03:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:03:55,187 INFO L93 Difference]: Finished difference Result 679 states and 688 transitions. [2018-04-09 22:03:55,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-04-09 22:03:55,187 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 311 [2018-04-09 22:03:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:03:55,189 INFO L225 Difference]: With dead ends: 679 [2018-04-09 22:03:55,189 INFO L226 Difference]: Without dead ends: 346 [2018-04-09 22:03:55,191 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 487 SyntacticMatches, 2 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12977 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=13102, Invalid=40954, Unknown=0, NotChecked=0, Total=54056 [2018-04-09 22:03:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-04-09 22:03:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 343. [2018-04-09 22:03:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-04-09 22:03:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 346 transitions. [2018-04-09 22:03:55,199 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 346 transitions. Word has length 311 [2018-04-09 22:03:55,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:03:55,200 INFO L459 AbstractCegarLoop]: Abstraction has 343 states and 346 transitions. [2018-04-09 22:03:55,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-04-09 22:03:55,200 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 346 transitions. [2018-04-09 22:03:55,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-04-09 22:03:55,201 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:03:55,201 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] [2018-04-09 22:03:55,201 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]=== [2018-04-09 22:03:55,201 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 [2018-04-09 22:03:55,213 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:03:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:03:55,292 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:03:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 3 proven. 4247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:56,609 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:03:56,818 WARN L148 SmtUtils]: Spent 203ms on a formula simplification that was a NOOP. DAG size: 165 [2018-04-09 22:03:57,037 WARN L148 SmtUtils]: Spent 215ms on a formula simplification that was a NOOP. DAG size: 165 [2018-04-09 22:03:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 3 proven. 4247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 22:03:58,195 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:03:58,196 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 131 [2018-04-09 22:03:58,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-04-09 22:03:58,197 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-04-09 22:03:58,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3396, Invalid=13634, Unknown=0, NotChecked=0, Total=17030 [2018-04-09 22:03:58,198 INFO L87 Difference]: Start difference. First operand 343 states and 346 transitions. Second operand 131 states. [2018-04-09 22:04:00,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:04:00,119 INFO L93 Difference]: Finished difference Result 675 states and 681 transitions. [2018-04-09 22:04:00,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-04-09 22:04:00,120 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 313 [2018-04-09 22:04:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:04:00,122 INFO L225 Difference]: With dead ends: 675 [2018-04-09 22:04:00,122 INFO L226 Difference]: Without dead ends: 343 [2018-04-09 22:04:00,125 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 [2018-04-09 22:04:00,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-04-09 22:04:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-04-09 22:04:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-04-09 22:04:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 345 transitions. [2018-04-09 22:04:00,138 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 345 transitions. Word has length 313 [2018-04-09 22:04:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:04:00,138 INFO L459 AbstractCegarLoop]: Abstraction has 343 states and 345 transitions. [2018-04-09 22:04:00,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-04-09 22:04:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 345 transitions. [2018-04-09 22:04:00,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-04-09 22:04:00,140 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:04:00,140 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] [2018-04-09 22:04:00,140 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]=== [2018-04-09 22:04:00,140 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 [2018-04-09 22:04:00,148 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:04:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:04:00,207 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:04:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-09 22:04:00,320 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:04:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-09 22:04:00,418 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 22:04:00,419 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-09 22:04:00,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-09 22:04:00,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-09 22:04:00,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-04-09 22:04:00,420 INFO L87 Difference]: Start difference. First operand 343 states and 345 transitions. Second operand 9 states. [2018-04-09 22:04:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:04:00,471 INFO L93 Difference]: Finished difference Result 359 states and 361 transitions. [2018-04-09 22:04:00,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-09 22:04:00,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 322 [2018-04-09 22:04:00,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:04:00,473 INFO L225 Difference]: With dead ends: 359 [2018-04-09 22:04:00,473 INFO L226 Difference]: Without dead ends: 358 [2018-04-09 22:04:00,474 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 [2018-04-09 22:04:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-04-09 22:04:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 341. [2018-04-09 22:04:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-04-09 22:04:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 343 transitions. [2018-04-09 22:04:00,485 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 343 transitions. Word has length 322 [2018-04-09 22:04:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:04:00,486 INFO L459 AbstractCegarLoop]: Abstraction has 341 states and 343 transitions. [2018-04-09 22:04:00,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-09 22:04:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 343 transitions. [2018-04-09 22:04:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-04-09 22:04:00,488 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:04:00,488 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] [2018-04-09 22:04:00,489 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]=== [2018-04-09 22:04:00,489 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 [2018-04-09 22:04:00,499 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:04:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:04:00,577 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:04:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-09 22:04:00,654 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:04:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4528 trivial. 0 not checked. [2018-04-09 22:04:00,737 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:04:00,737 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-04-09 22:04:00,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-09 22:04:00,738 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-09 22:04:00,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-04-09 22:04:00,738 INFO L87 Difference]: Start difference. First operand 341 states and 343 transitions. Second operand 8 states. [2018-04-09 22:04:00,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:04:00,797 INFO L93 Difference]: Finished difference Result 391 states and 397 transitions. [2018-04-09 22:04:00,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-09 22:04:00,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2018-04-09 22:04:00,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:04:00,800 INFO L225 Difference]: With dead ends: 391 [2018-04-09 22:04:00,800 INFO L226 Difference]: Without dead ends: 371 [2018-04-09 22:04:00,800 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 [2018-04-09 22:04:00,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-04-09 22:04:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 361. [2018-04-09 22:04:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-04-09 22:04:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 365 transitions. [2018-04-09 22:04:00,817 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 365 transitions. Word has length 330 [2018-04-09 22:04:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:04:00,817 INFO L459 AbstractCegarLoop]: Abstraction has 361 states and 365 transitions. [2018-04-09 22:04:00,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-09 22:04:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 365 transitions. [2018-04-09 22:04:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2018-04-09 22:04:00,828 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:04:00,828 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] [2018-04-09 22:04:00,828 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]=== [2018-04-09 22:04:00,829 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 [2018-04-09 22:04:00,838 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:04:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:04:01,085 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:04:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 41682 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 41646 trivial. 0 not checked. [2018-04-09 22:04:01,433 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:04:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 41682 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 41646 trivial. 0 not checked. [2018-04-09 22:04:01,801 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:04:01,801 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-04-09 22:04:01,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-09 22:04:01,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-09 22:04:01,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-04-09 22:04:01,802 INFO L87 Difference]: Start difference. First operand 361 states and 365 transitions. Second operand 16 states. [2018-04-09 22:04:01,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:04:01,989 INFO L93 Difference]: Finished difference Result 431 states and 443 transitions. [2018-04-09 22:04:01,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-09 22:04:01,989 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 946 [2018-04-09 22:04:01,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:04:01,992 INFO L225 Difference]: With dead ends: 431 [2018-04-09 22:04:01,992 INFO L226 Difference]: Without dead ends: 411 [2018-04-09 22:04:01,992 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1903 GetRequests, 1877 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2018-04-09 22:04:01,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-04-09 22:04:02,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 401. [2018-04-09 22:04:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-04-09 22:04:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 409 transitions. [2018-04-09 22:04:02,006 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 409 transitions. Word has length 946 [2018-04-09 22:04:02,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:04:02,007 INFO L459 AbstractCegarLoop]: Abstraction has 401 states and 409 transitions. [2018-04-09 22:04:02,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-09 22:04:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 409 transitions. [2018-04-09 22:04:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2179 [2018-04-09 22:04:02,030 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:04:02,030 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] [2018-04-09 22:04:02,030 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]=== [2018-04-09 22:04:02,031 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 [2018-04-09 22:04:02,045 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:04:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:04:02,472 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:04:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 228354 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 228130 trivial. 0 not checked. [2018-04-09 22:04:04,008 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:04:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 228354 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 228130 trivial. 0 not checked. [2018-04-09 22:04:05,596 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:04:05,598 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-04-09 22:04:05,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-09 22:04:05,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-09 22:04:05,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2018-04-09 22:04:05,602 INFO L87 Difference]: Start difference. First operand 401 states and 409 transitions. Second operand 32 states. [2018-04-09 22:04:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:04:06,267 INFO L93 Difference]: Finished difference Result 511 states and 535 transitions. [2018-04-09 22:04:06,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-09 22:04:06,267 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 2178 [2018-04-09 22:04:06,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:04:06,272 INFO L225 Difference]: With dead ends: 511 [2018-04-09 22:04:06,272 INFO L226 Difference]: Without dead ends: 491 [2018-04-09 22:04:06,274 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4383 GetRequests, 4325 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1155, Invalid=2385, Unknown=0, NotChecked=0, Total=3540 [2018-04-09 22:04:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-04-09 22:04:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 481. [2018-04-09 22:04:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-04-09 22:04:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 497 transitions. [2018-04-09 22:04:06,300 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 497 transitions. Word has length 2178 [2018-04-09 22:04:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:04:06,301 INFO L459 AbstractCegarLoop]: Abstraction has 481 states and 497 transitions. [2018-04-09 22:04:06,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-09 22:04:06,302 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 497 transitions. [2018-04-09 22:04:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4643 [2018-04-09 22:04:06,429 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:04:06,430 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] [2018-04-09 22:04:06,431 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]=== [2018-04-09 22:04:06,431 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 [2018-04-09 22:04:06,437 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:04:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:04:07,388 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:04:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1051170 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1050090 trivial. 0 not checked. [2018-04-09 22:04:13,243 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:04:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1051170 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1050090 trivial. 0 not checked. [2018-04-09 22:04:19,111 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:04:19,121 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2018-04-09 22:04:19,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-04-09 22:04:19,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-04-09 22:04:19,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2018-04-09 22:04:19,124 INFO L87 Difference]: Start difference. First operand 481 states and 497 transitions. Second operand 64 states. [2018-04-09 22:04:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:04:20,379 INFO L93 Difference]: Finished difference Result 671 states and 719 transitions. [2018-04-09 22:04:20,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-04-09 22:04:20,379 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 4642 [2018-04-09 22:04:20,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:04:20,386 INFO L225 Difference]: With dead ends: 671 [2018-04-09 22:04:20,386 INFO L226 Difference]: Without dead ends: 651 [2018-04-09 22:04:20,388 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 [2018-04-09 22:04:20,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2018-04-09 22:04:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 641. [2018-04-09 22:04:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2018-04-09 22:04:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 673 transitions. [2018-04-09 22:04:20,414 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 673 transitions. Word has length 4642 [2018-04-09 22:04:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:04:20,416 INFO L459 AbstractCegarLoop]: Abstraction has 641 states and 673 transitions. [2018-04-09 22:04:20,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-04-09 22:04:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 673 transitions. [2018-04-09 22:04:20,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9571 [2018-04-09 22:04:20,793 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:04:20,796 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] [2018-04-09 22:04:20,796 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]=== [2018-04-09 22:04:20,797 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 [2018-04-09 22:04:20,802 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:04:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:04:22,443 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:04:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4494690 backedges. 0 proven. 4712 refuted. 0 times theorem prover too weak. 4489978 trivial. 0 not checked. [2018-04-09 22:04:45,565 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:05:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4494690 backedges. 0 proven. 4712 refuted. 0 times theorem prover too weak. 4489978 trivial. 0 not checked. [2018-04-09 22:05:09,938 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:05:09,940 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-04-09 22:05:09,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-04-09 22:05:09,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-04-09 22:05:09,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3072, Unknown=0, NotChecked=0, Total=4160 [2018-04-09 22:05:09,946 INFO L87 Difference]: Start difference. First operand 641 states and 673 transitions. Second operand 65 states. [2018-04-09 22:05:11,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:05:11,488 INFO L93 Difference]: Finished difference Result 681 states and 715 transitions. [2018-04-09 22:05:11,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-04-09 22:05:11,488 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 9570 [2018-04-09 22:05:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:05:11,497 INFO L225 Difference]: With dead ends: 681 [2018-04-09 22:05:11,497 INFO L226 Difference]: Without dead ends: 661 [2018-04-09 22:05:11,499 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 [2018-04-09 22:05:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2018-04-09 22:05:11,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 651. [2018-04-09 22:05:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2018-04-09 22:05:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 684 transitions. [2018-04-09 22:05:11,523 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 684 transitions. Word has length 9570 [2018-04-09 22:05:11,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:05:11,527 INFO L459 AbstractCegarLoop]: Abstraction has 651 states and 684 transitions. [2018-04-09 22:05:11,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-04-09 22:05:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 684 transitions. [2018-04-09 22:05:11,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9879 [2018-04-09 22:05:11,935 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:05:11,938 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] [2018-04-09 22:05:11,938 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]=== [2018-04-09 22:05:11,940 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 [2018-04-09 22:05:11,945 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:05:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:05:13,744 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 22:05:15,222 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 [2018-04-09 22:05:15,223 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,225 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,225 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-09 22:05:15,376 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:15,378 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 [2018-04-09 22:05:15,378 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,382 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,383 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:15,495 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:15,496 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 [2018-04-09 22:05:15,497 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,502 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,502 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:15,630 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:15,632 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 [2018-04-09 22:05:15,632 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,645 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,646 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:15,795 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:15,796 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 [2018-04-09 22:05:15,797 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,802 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,802 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:15,917 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:15,919 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 [2018-04-09 22:05:15,919 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,924 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:15,924 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:16,038 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:16,039 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 [2018-04-09 22:05:16,039 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,043 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,044 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:16,169 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:16,170 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 [2018-04-09 22:05:16,171 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,175 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,176 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:16,319 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:16,321 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 [2018-04-09 22:05:16,321 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,329 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,329 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:16,490 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:16,491 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 [2018-04-09 22:05:16,492 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,496 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,496 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:16,619 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:16,620 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 [2018-04-09 22:05:16,620 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,624 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,625 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:16,752 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:16,754 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 [2018-04-09 22:05:16,754 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,758 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,759 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:16,883 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:16,884 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 [2018-04-09 22:05:16,901 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,906 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:16,906 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:17,034 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:17,035 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 [2018-04-09 22:05:17,036 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,041 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,041 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:17,169 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:17,170 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 [2018-04-09 22:05:17,170 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,174 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,174 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:17,307 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:17,308 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 [2018-04-09 22:05:17,308 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,312 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,312 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:17,445 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:17,446 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 [2018-04-09 22:05:17,446 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,450 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,450 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:17,586 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:17,587 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 [2018-04-09 22:05:17,588 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,592 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,592 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:17,729 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:17,730 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 [2018-04-09 22:05:17,730 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,735 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,735 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:17,877 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:17,879 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 [2018-04-09 22:05:17,879 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,883 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:17,884 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:18,026 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:18,027 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 [2018-04-09 22:05:18,028 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,032 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,032 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:18,177 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:18,178 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 [2018-04-09 22:05:18,178 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,184 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,184 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:18,332 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:18,333 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 [2018-04-09 22:05:18,333 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,337 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,338 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:18,497 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:18,498 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 [2018-04-09 22:05:18,498 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,503 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,503 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:18,661 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:18,662 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 [2018-04-09 22:05:18,662 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,666 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,667 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:18,823 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:18,824 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 [2018-04-09 22:05:18,824 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,829 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,829 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:18,982 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:18,987 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 [2018-04-09 22:05:18,987 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,992 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:18,992 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:19,146 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:19,148 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 [2018-04-09 22:05:19,148 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:19,152 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:19,152 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:19,304 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:19,305 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 [2018-04-09 22:05:19,305 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:19,309 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:19,309 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:19,464 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:19,465 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 [2018-04-09 22:05:19,465 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:19,469 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:19,470 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:19,629 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:19,630 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 [2018-04-09 22:05:19,631 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:19,637 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:19,637 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-09 22:05:19,807 INFO L700 Elim1Store]: detected not equals via solver [2018-04-09 22:05:19,809 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 [2018-04-09 22:05:19,809 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:19,813 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-09 22:05:19,814 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:5 [2018-04-09 22:05:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4789504 backedges. 4590 proven. 294781 refuted. 0 times theorem prover too weak. 4490133 trivial. 0 not checked. [2018-04-09 22:05:47,655 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 22:05:53,278 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 [2018-04-09 22:05:53,279 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:53,280 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 [2018-04-09 22:05:53,280 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-09 22:05:53,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-09 22:05:53,284 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:14, output treesize:7 [2018-04-09 22:05:53,571 WARN L148 SmtUtils]: Spent 279ms on a formula simplification that was a NOOP. DAG size: 167 [2018-04-09 22:06:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4789504 backedges. 0 proven. 294931 refuted. 0 times theorem prover too weak. 4494573 trivial. 0 not checked. [2018-04-09 22:06:22,266 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-09 22:06:22,268 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 76] total 137 [2018-04-09 22:06:22,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-04-09 22:06:22,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-04-09 22:06:22,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1332, Invalid=17300, Unknown=0, NotChecked=0, Total=18632 [2018-04-09 22:06:22,274 INFO L87 Difference]: Start difference. First operand 651 states and 684 transitions. Second operand 137 states. [2018-04-09 22:06:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 22:06:33,869 INFO L93 Difference]: Finished difference Result 661 states and 693 transitions. [2018-04-09 22:06:33,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-04-09 22:06:33,869 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 9878 [2018-04-09 22:06:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 22:06:33,889 INFO L225 Difference]: With dead ends: 661 [2018-04-09 22:06:33,889 INFO L226 Difference]: Without dead ends: 656 [2018-04-09 22:06:33,895 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 19884 GetRequests, 19526 SyntacticMatches, 94 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17218 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=5702, Invalid=64788, Unknown=0, NotChecked=0, Total=70490 [2018-04-09 22:06:33,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2018-04-09 22:06:33,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 652. [2018-04-09 22:06:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2018-04-09 22:06:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 685 transitions. [2018-04-09 22:06:33,923 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 685 transitions. Word has length 9878 [2018-04-09 22:06:33,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 22:06:33,926 INFO L459 AbstractCegarLoop]: Abstraction has 652 states and 685 transitions. [2018-04-09 22:06:33,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-04-09 22:06:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 685 transitions. [2018-04-09 22:06:34,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9881 [2018-04-09 22:06:34,353 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 22:06:34,357 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] [2018-04-09 22:06:34,357 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]=== [2018-04-09 22:06:34,358 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 [2018-04-09 22:06:34,364 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 22:06:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 22:06:36,137 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown