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_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d4a2356 [2018-03-23 11:53:19,596 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-03-23 11:53:19,598 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-03-23 11:53:19,615 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-03-23 11:53:19,616 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-03-23 11:53:19,617 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-03-23 11:53:19,618 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-03-23 11:53:19,620 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-03-23 11:53:19,622 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-03-23 11:53:19,623 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-03-23 11:53:19,624 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-03-23 11:53:19,624 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-03-23 11:53:19,625 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-03-23 11:53:19,627 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-03-23 11:53:19,627 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-03-23 11:53:19,630 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-03-23 11:53:19,632 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-03-23 11:53:19,634 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-03-23 11:53:19,636 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-03-23 11:53:19,637 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-03-23 11:53:19,640 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-03-23 11:53:19,640 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-03-23 11:53:19,640 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-03-23 11:53:19,641 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-03-23 11:53:19,642 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-03-23 11:53:19,643 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-03-23 11:53:19,644 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-03-23 11:53:19,644 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-03-23 11:53:19,645 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-03-23 11:53:19,645 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-03-23 11:53:19,646 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-03-23 11:53:19,646 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-03-23 11:53:19,656 INFO L110 SettingsManager]: Loading preferences was successful [2018-03-23 11:53:19,656 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-03-23 11:53:19,657 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-03-23 11:53:19,657 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-03-23 11:53:19,657 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-03-23 11:53:19,657 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-03-23 11:53:19,658 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-03-23 11:53:19,658 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-03-23 11:53:19,659 INFO L133 SettingsManager]: * sizeof long=4 [2018-03-23 11:53:19,659 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-03-23 11:53:19,659 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-03-23 11:53:19,659 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-03-23 11:53:19,659 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-03-23 11:53:19,660 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-03-23 11:53:19,660 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-03-23 11:53:19,660 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-03-23 11:53:19,660 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-03-23 11:53:19,660 INFO L133 SettingsManager]: * sizeof long double=12 [2018-03-23 11:53:19,660 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-03-23 11:53:19,661 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-03-23 11:53:19,661 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-03-23 11:53:19,661 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-03-23 11:53:19,661 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-03-23 11:53:19,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-23 11:53:19,662 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-03-23 11:53:19,662 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-03-23 11:53:19,662 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-03-23 11:53:19,662 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-03-23 11:53:19,662 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-03-23 11:53:19,663 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-03-23 11:53:19,663 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-03-23 11:53:19,663 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-03-23 11:53:19,664 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-03-23 11:53:19,664 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-03-23 11:53:19,698 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-03-23 11:53:19,711 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-03-23 11:53:19,715 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-03-23 11:53:19,716 INFO L271 PluginConnector]: Initializing CDTParser... [2018-03-23 11:53:19,717 INFO L276 PluginConnector]: CDTParser initialized [2018-03-23 11:53:19,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-03-23 11:53:20,047 INFO L228 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG267ffb916 [2018-03-23 11:53:20,179 INFO L291 CDTParser]: IsIndexed: true [2018-03-23 11:53:20,179 INFO L292 CDTParser]: Found 1 translation units. [2018-03-23 11:53:20,180 INFO L171 CDTParser]: Scanning ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-03-23 11:53:20,181 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-03-23 11:53:20,181 INFO L215 ultiparseSymbolTable]: [2018-03-23 11:53:20,181 INFO L218 ultiparseSymbolTable]: Function table: [2018-03-23 11:53:20,181 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo ('foo') in ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-03-23 11:53:20,181 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-03-23 11:53:20,181 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-03-23 11:53:20,181 INFO L233 ultiparseSymbolTable]: [2018-03-23 11:53:20,196 INFO L334 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG267ffb916 [2018-03-23 11:53:20,200 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-03-23 11:53:20,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-03-23 11:53:20,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-03-23 11:53:20,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-03-23 11:53:20,208 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-03-23 11:53:20,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.03 11:53:20" (1/1) ... [2018-03-23 11:53:20,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a2e0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20, skipping insertion in model container [2018-03-23 11:53:20,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.03 11:53:20" (1/1) ... [2018-03-23 11:53:20,228 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-23 11:53:20,242 INFO L167 Dispatcher]: Using SV-COMP mode [2018-03-23 11:53:20,372 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-23 11:53:20,397 INFO L175 PostProcessor]: Settings: Checked method=main [2018-03-23 11:53:20,402 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-03-23 11:53:20,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20 WrapperNode [2018-03-23 11:53:20,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-03-23 11:53:20,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-03-23 11:53:20,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-03-23 11:53:20,410 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-03-23 11:53:20,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20" (1/1) ... [2018-03-23 11:53:20,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20" (1/1) ... [2018-03-23 11:53:20,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20" (1/1) ... [2018-03-23 11:53:20,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20" (1/1) ... [2018-03-23 11:53:20,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20" (1/1) ... [2018-03-23 11:53:20,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20" (1/1) ... [2018-03-23 11:53:20,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20" (1/1) ... [2018-03-23 11:53:20,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-03-23 11:53:20,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-03-23 11:53:20,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-03-23 11:53:20,437 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-03-23 11:53:20,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-03-23 11:53:20,495 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-03-23 11:53:20,495 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-03-23 11:53:20,495 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-03-23 11:53:20,495 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-03-23 11:53:20,495 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo [2018-03-23 11:53:20,495 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-03-23 11:53:20,496 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-03-23 11:53:20,496 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-03-23 11:53:20,496 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-03-23 11:53:20,496 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-03-23 11:53:20,496 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-03-23 11:53:20,496 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-03-23 11:53:20,496 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-03-23 11:53:20,797 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-03-23 11:53:20,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.03 11:53:20 BoogieIcfgContainer [2018-03-23 11:53:20,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-03-23 11:53:20,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-03-23 11:53:20,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-03-23 11:53:20,802 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-03-23 11:53:20,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.03 11:53:20" (1/3) ... [2018-03-23 11:53:20,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aaa0f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.03 11:53:20, skipping insertion in model container [2018-03-23 11:53:20,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.03 11:53:20" (2/3) ... [2018-03-23 11:53:20,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aaa0f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.03 11:53:20, skipping insertion in model container [2018-03-23 11:53:20,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.03 11:53:20" (3/3) ... [2018-03-23 11:53:20,805 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4_true-valid-memsafety_true-termination.c [2018-03-23 11:53:20,816 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-03-23 11:53:20,822 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-03-23 11:53:20,864 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-03-23 11:53:20,864 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-03-23 11:53:20,865 INFO L370 AbstractCegarLoop]: Hoare is true [2018-03-23 11:53:20,865 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-03-23 11:53:20,865 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-03-23 11:53:20,865 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-03-23 11:53:20,865 INFO L374 AbstractCegarLoop]: Difference is false [2018-03-23 11:53:20,865 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-03-23 11:53:20,866 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-03-23 11:53:20,867 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-03-23 11:53:20,883 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-03-23 11:53:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-03-23 11:53:20,890 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:20,891 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:20,891 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:20,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1440860085, now seen corresponding path program 1 times [2018-03-23 11:53:20,898 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:20,899 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:20,939 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:20,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:20,939 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:20,991 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:21,058 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-03-23 11:53:21,058 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-03-23 11:53:21,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-03-23 11:53:21,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-03-23 11:53:21,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-03-23 11:53:21,071 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2018-03-23 11:53:21,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:21,157 INFO L93 Difference]: Finished difference Result 134 states and 156 transitions. [2018-03-23 11:53:21,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-03-23 11:53:21,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-03-23 11:53:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:21,169 INFO L225 Difference]: With dead ends: 134 [2018-03-23 11:53:21,169 INFO L226 Difference]: Without dead ends: 79 [2018-03-23 11:53:21,173 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-03-23 11:53:21,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-03-23 11:53:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2018-03-23 11:53:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-03-23 11:53:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2018-03-23 11:53:21,212 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 14 [2018-03-23 11:53:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:21,212 INFO L459 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2018-03-23 11:53:21,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-03-23 11:53:21,213 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2018-03-23 11:53:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-03-23 11:53:21,213 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:21,214 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:21,214 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:21,214 INFO L82 PathProgramCache]: Analyzing trace with hash -658382786, now seen corresponding path program 1 times [2018-03-23 11:53:21,214 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:21,215 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:21,216 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:21,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:21,216 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:21,234 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:21,323 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-03-23 11:53:21,323 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-03-23 11:53:21,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-03-23 11:53:21,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-03-23 11:53:21,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-03-23 11:53:21,325 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 6 states. [2018-03-23 11:53:21,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:21,424 INFO L93 Difference]: Finished difference Result 126 states and 135 transitions. [2018-03-23 11:53:21,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-03-23 11:53:21,425 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-03-23 11:53:21,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:21,426 INFO L225 Difference]: With dead ends: 126 [2018-03-23 11:53:21,427 INFO L226 Difference]: Without dead ends: 75 [2018-03-23 11:53:21,428 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-03-23 11:53:21,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-03-23 11:53:21,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2018-03-23 11:53:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-03-23 11:53:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2018-03-23 11:53:21,438 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 23 [2018-03-23 11:53:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:21,438 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2018-03-23 11:53:21,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-03-23 11:53:21,438 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2018-03-23 11:53:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-03-23 11:53:21,439 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:21,440 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:21,440 INFO L408 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:21,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1064970165, now seen corresponding path program 1 times [2018-03-23 11:53:21,440 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:21,440 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:21,441 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:21,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:21,442 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:21,454 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:21,503 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-03-23 11:53:21,503 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-03-23 11:53:21,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-03-23 11:53:21,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-03-23 11:53:21,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-03-23 11:53:21,504 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 5 states. [2018-03-23 11:53:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:21,560 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2018-03-23 11:53:21,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-03-23 11:53:21,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-03-23 11:53:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:21,561 INFO L225 Difference]: With dead ends: 68 [2018-03-23 11:53:21,561 INFO L226 Difference]: Without dead ends: 67 [2018-03-23 11:53:21,561 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-03-23 11:53:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-03-23 11:53:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-03-23 11:53:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-03-23 11:53:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2018-03-23 11:53:21,568 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 24 [2018-03-23 11:53:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:21,568 INFO L459 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2018-03-23 11:53:21,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-03-23 11:53:21,568 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2018-03-23 11:53:21,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-03-23 11:53:21,569 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:21,569 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:21,569 INFO L408 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:21,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1064970166, now seen corresponding path program 1 times [2018-03-23 11:53:21,569 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:21,569 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:21,570 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:21,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:21,570 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:21,580 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:21,684 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-03-23 11:53:21,684 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-03-23 11:53:21,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-03-23 11:53:21,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-03-23 11:53:21,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-03-23 11:53:21,686 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 6 states. [2018-03-23 11:53:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:21,812 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2018-03-23 11:53:21,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-03-23 11:53:21,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-03-23 11:53:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:21,814 INFO L225 Difference]: With dead ends: 73 [2018-03-23 11:53:21,814 INFO L226 Difference]: Without dead ends: 72 [2018-03-23 11:53:21,814 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-03-23 11:53:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-03-23 11:53:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2018-03-23 11:53:21,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-03-23 11:53:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2018-03-23 11:53:21,822 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 24 [2018-03-23 11:53:21,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:21,823 INFO L459 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2018-03-23 11:53:21,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-03-23 11:53:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2018-03-23 11:53:21,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-03-23 11:53:21,824 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:21,824 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:21,824 INFO L408 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:21,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1397858905, now seen corresponding path program 1 times [2018-03-23 11:53:21,824 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:21,824 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:21,825 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:21,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:21,825 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:21,836 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:21,885 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:21,885 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:21,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:21,915 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:21,965 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 11:53:21,965 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-03-23 11:53:21,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-03-23 11:53:21,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-03-23 11:53:21,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-03-23 11:53:21,966 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 5 states. [2018-03-23 11:53:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:22,034 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2018-03-23 11:53:22,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-03-23 11:53:22,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-03-23 11:53:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:22,038 INFO L225 Difference]: With dead ends: 86 [2018-03-23 11:53:22,039 INFO L226 Difference]: Without dead ends: 85 [2018-03-23 11:53:22,039 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-03-23 11:53:22,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-03-23 11:53:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2018-03-23 11:53:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-03-23 11:53:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2018-03-23 11:53:22,050 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 32 [2018-03-23 11:53:22,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:22,050 INFO L459 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2018-03-23 11:53:22,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-03-23 11:53:22,051 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2018-03-23 11:53:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-03-23 11:53:22,052 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:22,052 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:22,052 INFO L408 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:22,053 INFO L82 PathProgramCache]: Analyzing trace with hash -383953043, now seen corresponding path program 1 times [2018-03-23 11:53:22,053 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:22,053 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:22,054 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:22,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:22,054 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:22,077 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:22,499 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:22,499 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:22,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:22,533 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:22,558 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-03-23 11:53:22,559 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-23 11:53:22,564 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-23 11:53:22,564 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-23 11:53:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:22,645 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 11:53:22,645 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-03-23 11:53:22,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-03-23 11:53:22,646 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-03-23 11:53:22,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-03-23 11:53:22,646 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 8 states. [2018-03-23 11:53:22,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:22,821 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-03-23 11:53:22,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-03-23 11:53:22,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-03-23 11:53:22,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:22,823 INFO L225 Difference]: With dead ends: 85 [2018-03-23 11:53:22,823 INFO L226 Difference]: Without dead ends: 84 [2018-03-23 11:53:22,823 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-03-23 11:53:22,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-03-23 11:53:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2018-03-23 11:53:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-03-23 11:53:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2018-03-23 11:53:22,832 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 33 [2018-03-23 11:53:22,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:22,832 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2018-03-23 11:53:22,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-03-23 11:53:22,833 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2018-03-23 11:53:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-03-23 11:53:22,834 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:22,834 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:22,834 INFO L408 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:22,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1868700066, now seen corresponding path program 2 times [2018-03-23 11:53:22,835 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:22,836 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:22,837 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:22,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:22,837 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:22,850 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:23,028 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:23,028 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:23,041 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-03-23 11:53:23,082 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-03-23 11:53:23,082 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 11:53:23,085 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-03-23 11:53:23,215 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 11:53:23,215 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 14 [2018-03-23 11:53:23,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-03-23 11:53:23,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-03-23 11:53:23,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2018-03-23 11:53:23,216 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 15 states. [2018-03-23 11:53:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:23,610 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2018-03-23 11:53:23,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-03-23 11:53:23,611 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2018-03-23 11:53:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:23,612 INFO L225 Difference]: With dead ends: 97 [2018-03-23 11:53:23,612 INFO L226 Difference]: Without dead ends: 96 [2018-03-23 11:53:23,612 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2018-03-23 11:53:23,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-03-23 11:53:23,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2018-03-23 11:53:23,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-03-23 11:53:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2018-03-23 11:53:23,621 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 41 [2018-03-23 11:53:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:23,621 INFO L459 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2018-03-23 11:53:23,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-03-23 11:53:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2018-03-23 11:53:23,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-03-23 11:53:23,622 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:23,622 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:23,623 INFO L408 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:23,623 INFO L82 PathProgramCache]: Analyzing trace with hash -2095127146, now seen corresponding path program 2 times [2018-03-23 11:53:23,623 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:23,623 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:23,624 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:23,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-03-23 11:53:23,624 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:23,634 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:23,867 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:23,868 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:23,880 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-03-23 11:53:23,895 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-03-23 11:53:23,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 11:53:23,898 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:23,902 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-03-23 11:53:23,902 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-23 11:53:23,927 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-23 11:53:23,928 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-23 11:53:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:24,052 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 11:53:24,052 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-03-23 11:53:24,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-03-23 11:53:24,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-03-23 11:53:24,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-03-23 11:53:24,053 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 10 states. [2018-03-23 11:53:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:24,264 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2018-03-23 11:53:24,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-03-23 11:53:24,264 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-03-23 11:53:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:24,265 INFO L225 Difference]: With dead ends: 96 [2018-03-23 11:53:24,266 INFO L226 Difference]: Without dead ends: 95 [2018-03-23 11:53:24,266 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2018-03-23 11:53:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-03-23 11:53:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2018-03-23 11:53:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-03-23 11:53:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2018-03-23 11:53:24,276 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 42 [2018-03-23 11:53:24,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:24,277 INFO L459 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2018-03-23 11:53:24,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-03-23 11:53:24,277 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2018-03-23 11:53:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-03-23 11:53:24,278 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:24,278 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:24,279 INFO L408 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:24,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1104010386, now seen corresponding path program 1 times [2018-03-23 11:53:24,279 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:24,279 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:24,280 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:24,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-03-23 11:53:24,280 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:24,291 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-03-23 11:53:24,344 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:24,345 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:24,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:24,370 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-03-23 11:53:24,441 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 11:53:24,442 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2018-03-23 11:53:24,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-03-23 11:53:24,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-03-23 11:53:24,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-03-23 11:53:24,443 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 11 states. [2018-03-23 11:53:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:24,586 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2018-03-23 11:53:24,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-03-23 11:53:24,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2018-03-23 11:53:24,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:24,587 INFO L225 Difference]: With dead ends: 185 [2018-03-23 11:53:24,587 INFO L226 Difference]: Without dead ends: 111 [2018-03-23 11:53:24,588 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-03-23 11:53:24,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-03-23 11:53:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2018-03-23 11:53:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-03-23 11:53:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2018-03-23 11:53:24,595 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 43 [2018-03-23 11:53:24,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:24,595 INFO L459 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2018-03-23 11:53:24,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-03-23 11:53:24,595 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2018-03-23 11:53:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-03-23 11:53:24,597 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:24,597 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:24,597 INFO L408 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:24,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1992308109, now seen corresponding path program 3 times [2018-03-23 11:53:24,597 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:24,597 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:24,598 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:24,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:24,598 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:24,610 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-03-23 11:53:24,903 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:24,903 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:24,912 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-03-23 11:53:24,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-03-23 11:53:24,933 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 11:53:24,936 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:24,954 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-03-23 11:53:24,955 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-23 11:53:24,964 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-03-23 11:53:24,964 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-03-23 11:53:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-03-23 11:53:25,152 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 11:53:25,152 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-03-23 11:53:25,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-03-23 11:53:25,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-03-23 11:53:25,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2018-03-23 11:53:25,153 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand 18 states. [2018-03-23 11:53:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:25,440 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2018-03-23 11:53:25,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-03-23 11:53:25,470 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 51 [2018-03-23 11:53:25,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:25,471 INFO L225 Difference]: With dead ends: 95 [2018-03-23 11:53:25,471 INFO L226 Difference]: Without dead ends: 94 [2018-03-23 11:53:25,471 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2018-03-23 11:53:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-03-23 11:53:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2018-03-23 11:53:25,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-03-23 11:53:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-03-23 11:53:25,479 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 51 [2018-03-23 11:53:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:25,479 INFO L459 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-03-23 11:53:25,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-03-23 11:53:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-03-23 11:53:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-03-23 11:53:25,481 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:25,481 INFO L353 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:25,481 INFO L408 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:25,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2132771683, now seen corresponding path program 2 times [2018-03-23 11:53:25,481 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:25,482 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:25,482 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:25,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-03-23 11:53:25,483 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:25,499 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 7 proven. 66 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-03-23 11:53:25,718 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:25,718 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:25,726 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-03-23 11:53:25,745 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-03-23 11:53:25,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 11:53:25,750 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 61 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-03-23 11:53:25,834 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 11:53:25,834 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-03-23 11:53:25,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-23 11:53:25,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-23 11:53:25,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-03-23 11:53:25,835 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 16 states. [2018-03-23 11:53:26,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:26,130 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2018-03-23 11:53:26,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-03-23 11:53:26,131 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2018-03-23 11:53:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:26,132 INFO L225 Difference]: With dead ends: 169 [2018-03-23 11:53:26,132 INFO L226 Difference]: Without dead ends: 98 [2018-03-23 11:53:26,133 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2018-03-23 11:53:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-03-23 11:53:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2018-03-23 11:53:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-03-23 11:53:26,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2018-03-23 11:53:26,143 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 90 [2018-03-23 11:53:26,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:26,143 INFO L459 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2018-03-23 11:53:26,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-23 11:53:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2018-03-23 11:53:26,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-03-23 11:53:26,146 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:26,146 INFO L353 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:26,146 INFO L408 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:26,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1578399211, now seen corresponding path program 3 times [2018-03-23 11:53:26,146 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:26,147 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:26,147 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:26,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-03-23 11:53:26,148 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:26,165 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-03-23 11:53:26,277 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:26,277 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:26,283 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-03-23 11:53:26,304 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-03-23 11:53:26,304 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 11:53:26,309 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-03-23 11:53:26,382 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-03-23 11:53:26,382 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2018-03-23 11:53:26,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-03-23 11:53:26,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-03-23 11:53:26,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-03-23 11:53:26,383 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 10 states. [2018-03-23 11:53:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:26,466 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2018-03-23 11:53:26,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-03-23 11:53:26,466 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2018-03-23 11:53:26,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:26,467 INFO L225 Difference]: With dead ends: 108 [2018-03-23 11:53:26,468 INFO L226 Difference]: Without dead ends: 107 [2018-03-23 11:53:26,468 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-03-23 11:53:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-03-23 11:53:26,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 90. [2018-03-23 11:53:26,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-03-23 11:53:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2018-03-23 11:53:26,476 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 108 [2018-03-23 11:53:26,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:26,477 INFO L459 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2018-03-23 11:53:26,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-03-23 11:53:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2018-03-23 11:53:26,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-03-23 11:53:26,479 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:26,479 INFO L353 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:26,479 INFO L408 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1646242832, now seen corresponding path program 1 times [2018-03-23 11:53:26,479 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:26,480 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:26,480 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:26,480 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-03-23 11:53:26,481 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:26,493 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-03-23 11:53:26,565 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:26,565 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:26,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:26,596 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 109 proven. 33 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-03-23 11:53:26,717 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 11:53:26,717 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 16 [2018-03-23 11:53:26,718 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-03-23 11:53:26,718 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-03-23 11:53:26,718 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-03-23 11:53:26,718 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 16 states. [2018-03-23 11:53:26,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:26,934 INFO L93 Difference]: Finished difference Result 208 states and 222 transitions. [2018-03-23 11:53:26,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-03-23 11:53:26,934 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 116 [2018-03-23 11:53:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:26,936 INFO L225 Difference]: With dead ends: 208 [2018-03-23 11:53:26,936 INFO L226 Difference]: Without dead ends: 130 [2018-03-23 11:53:26,936 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2018-03-23 11:53:26,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-03-23 11:53:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 109. [2018-03-23 11:53:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-03-23 11:53:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2018-03-23 11:53:26,945 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 116 [2018-03-23 11:53:26,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:26,945 INFO L459 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2018-03-23 11:53:26,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-03-23 11:53:26,946 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2018-03-23 11:53:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-03-23 11:53:26,948 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:26,948 INFO L353 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 12, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:26,948 INFO L408 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:26,948 INFO L82 PathProgramCache]: Analyzing trace with hash 273739284, now seen corresponding path program 2 times [2018-03-23 11:53:26,949 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:26,949 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:26,949 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:26,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:26,950 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:26,978 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 356 proven. 62 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2018-03-23 11:53:27,362 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:27,362 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:27,368 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-03-23 11:53:27,380 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-03-23 11:53:27,380 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 11:53:27,383 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:27,405 INFO L700 Elim1Store]: detected not equals via solver [2018-03-23 11:53:27,405 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 5 [2018-03-23 11:53:27,406 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-23 11:53:27,407 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-03-23 11:53:27,407 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-03-23 11:53:27,494 INFO L700 Elim1Store]: detected not equals via solver [2018-03-23 11:53:27,495 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 5 [2018-03-23 11:53:27,496 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-23 11:53:27,497 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-03-23 11:53:27,497 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-03-23 11:53:27,541 INFO L700 Elim1Store]: detected not equals via solver [2018-03-23 11:53:27,542 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 5 [2018-03-23 11:53:27,542 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-03-23 11:53:27,544 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-03-23 11:53:27,544 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-03-23 11:53:27,590 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_~#mask~0.base| Int)) (and (= (store |c_old(#valid)| |main_~#mask~0.base| 0) |c_#valid|) (= (select |c_old(#valid)| |main_~#mask~0.base|) 0))) is different from true [2018-03-23 11:53:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2018-03-23 11:53:27,721 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-03-23 11:53:27,721 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2018-03-23 11:53:27,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-03-23 11:53:27,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-03-23 11:53:27,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=186, Unknown=1, NotChecked=28, Total=272 [2018-03-23 11:53:27,722 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand 17 states. [2018-03-23 11:53:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:28,222 INFO L93 Difference]: Finished difference Result 221 states and 234 transitions. [2018-03-23 11:53:28,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-03-23 11:53:28,222 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 190 [2018-03-23 11:53:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:28,223 INFO L225 Difference]: With dead ends: 221 [2018-03-23 11:53:28,223 INFO L226 Difference]: Without dead ends: 116 [2018-03-23 11:53:28,224 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 182 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=312, Invalid=747, Unknown=1, NotChecked=62, Total=1122 [2018-03-23 11:53:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-03-23 11:53:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2018-03-23 11:53:28,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-03-23 11:53:28,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2018-03-23 11:53:28,234 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 190 [2018-03-23 11:53:28,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:28,234 INFO L459 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2018-03-23 11:53:28,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-03-23 11:53:28,235 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2018-03-23 11:53:28,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-03-23 11:53:28,237 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:28,237 INFO L353 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-03-23 11:53:28,237 INFO L408 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:28,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2055771129, now seen corresponding path program 1 times [2018-03-23 11:53:28,237 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:28,237 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:28,238 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:28,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-03-23 11:53:28,238 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:28,258 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2018-03-23 11:53:28,347 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:28,347 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:28,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:28,399 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 520 proven. 100 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2018-03-23 11:53:28,605 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 11:53:28,606 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15] total 19 [2018-03-23 11:53:28,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-03-23 11:53:28,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-03-23 11:53:28,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-03-23 11:53:28,606 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 19 states. [2018-03-23 11:53:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:28,854 INFO L93 Difference]: Finished difference Result 233 states and 244 transitions. [2018-03-23 11:53:28,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-03-23 11:53:28,854 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 219 [2018-03-23 11:53:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:28,855 INFO L225 Difference]: With dead ends: 233 [2018-03-23 11:53:28,855 INFO L226 Difference]: Without dead ends: 135 [2018-03-23 11:53:28,856 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2018-03-23 11:53:28,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-03-23 11:53:28,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 126. [2018-03-23 11:53:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-03-23 11:53:28,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 130 transitions. [2018-03-23 11:53:28,865 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 130 transitions. Word has length 219 [2018-03-23 11:53:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:28,865 INFO L459 AbstractCegarLoop]: Abstraction has 126 states and 130 transitions. [2018-03-23 11:53:28,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-03-23 11:53:28,865 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 130 transitions. [2018-03-23 11:53:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-03-23 11:53:28,867 INFO L345 BasicCegarLoop]: Found error trace [2018-03-23 11:53:28,867 INFO L353 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 18, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-03-23 11:53:28,867 INFO L408 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX, mainErr1AssertViolationARRAY_INDEX, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0AssertViolationARRAY_INDEX]=== [2018-03-23 11:53:28,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1853534010, now seen corresponding path program 2 times [2018-03-23 11:53:28,868 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-03-23 11:53:28,868 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-03-23 11:53:28,868 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:28,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-03-23 11:53:28,869 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-03-23 11:53:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-03-23 11:53:28,889 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-03-23 11:53:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2018-03-23 11:53:29,029 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-03-23 11:53:29,030 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-03-23 11:53:29,042 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-03-23 11:53:29,094 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-03-23 11:53:29,094 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-03-23 11:53:29,098 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-03-23 11:53:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 726 proven. 147 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2018-03-23 11:53:29,338 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-03-23 11:53:29,338 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17] total 23 [2018-03-23 11:53:29,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-03-23 11:53:29,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-03-23 11:53:29,339 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2018-03-23 11:53:29,339 INFO L87 Difference]: Start difference. First operand 126 states and 130 transitions. Second operand 23 states. [2018-03-23 11:53:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-03-23 11:53:29,664 INFO L93 Difference]: Finished difference Result 257 states and 268 transitions. [2018-03-23 11:53:29,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-03-23 11:53:29,664 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 253 [2018-03-23 11:53:29,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-03-23 11:53:29,665 INFO L225 Difference]: With dead ends: 257 [2018-03-23 11:53:29,665 INFO L226 Difference]: Without dead ends: 0 [2018-03-23 11:53:29,666 INFO L568 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=1322, Unknown=0, NotChecked=0, Total=1640 [2018-03-23 11:53:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-03-23 11:53:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-03-23 11:53:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-03-23 11:53:29,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-03-23 11:53:29,666 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 253 [2018-03-23 11:53:29,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-03-23 11:53:29,667 INFO L459 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-03-23 11:53:29,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-03-23 11:53:29,667 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-03-23 11:53:29,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-03-23 11:53:29,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-03-23 11:53:30,112 WARN L151 SmtUtils]: Spent 108ms on a formula simplification. DAG size of input: 36 DAG size of output 22 [2018-03-23 11:53:30,268 WARN L151 SmtUtils]: Spent 152ms on a formula simplification. DAG size of input: 70 DAG size of output 33 [2018-03-23 11:53:30,289 INFO L416 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-03-23 11:53:30,289 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-03-23 11:53:30,290 INFO L412 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-03-23 11:53:30,290 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-03-23 11:53:30,290 INFO L416 ceAbstractionStarter]: For program point __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooFINAL(lines 12 19) no Hoare annotation was computed. [2018-03-23 11:53:30,290 INFO L416 ceAbstractionStarter]: For program point L15''''(line 15) no Hoare annotation was computed. [2018-03-23 11:53:30,290 INFO L412 ceAbstractionStarter]: At program point L15''''''(lines 15 17) the Hoare annotation is: (or (not (= 32 |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_#in~size|)) (and (= 1 (select |#valid| __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_~b.base)) (= __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_~b.offset 0) (<= |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_#in~size| __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_~size) (<= 0 (+ __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_~b.offset __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_~i~0)) (<= __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_~size 32) (= 32 (select |#length| __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_~b.base))) (not (= 1 (select |#valid| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_#in~b.base|))) (not (= 0 |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_#in~b.offset|)) (not (= 32 (select |#length| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__foo_#in~b.base|)))) [2018-03-23 11:53:30,290 INFO L416 ceAbstractionStarter]: For program point L15'''''''(lines 15 17) no Hoare annotation was computed. [2018-03-23 11:53:30,291 INFO L416 ceAbstractionStarter]: For program point L16'''(line 16) no Hoare annotation was computed. [2018-03-23 11:53:30,291 INFO L416 ceAbstractionStarter]: For program point L15'(lines 15 17) no Hoare annotation was computed. [2018-03-23 11:53:30,291 INFO L416 ceAbstractionStarter]: For program point L16''(line 16) no Hoare annotation was computed. [2018-03-23 11:53:30,291 INFO L416 ceAbstractionStarter]: For program point __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr1RequiresViolation(line 16) no Hoare annotation was computed. [2018-03-23 11:53:30,291 INFO L416 ceAbstractionStarter]: For program point L15'''''(line 15) no Hoare annotation was computed. [2018-03-23 11:53:30,291 INFO L416 ceAbstractionStarter]: For program point __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr2RequiresViolation(line 16) no Hoare annotation was computed. [2018-03-23 11:53:30,291 INFO L416 ceAbstractionStarter]: For program point L12(lines 12 19) no Hoare annotation was computed. [2018-03-23 11:53:30,291 INFO L416 ceAbstractionStarter]: For program point L15'''(lines 15 17) no Hoare annotation was computed. [2018-03-23 11:53:30,291 INFO L416 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-03-23 11:53:30,291 INFO L416 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-03-23 11:53:30,292 INFO L416 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-03-23 11:53:30,292 INFO L416 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-03-23 11:53:30,292 INFO L416 ceAbstractionStarter]: For program point L16'(line 16) no Hoare annotation was computed. [2018-03-23 11:53:30,292 INFO L416 ceAbstractionStarter]: For program point __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooEXIT(lines 12 19) no Hoare annotation was computed. [2018-03-23 11:53:30,292 INFO L419 ceAbstractionStarter]: At program point __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooENTRY(lines 12 19) the Hoare annotation is: true [2018-03-23 11:53:30,292 INFO L416 ceAbstractionStarter]: For program point __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_true_termination_c__fooErr0AssertViolationARRAY_INDEX(line 16) no Hoare annotation was computed. [2018-03-23 11:53:30,292 INFO L419 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-03-23 11:53:30,292 INFO L419 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-03-23 11:53:30,292 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-03-23 11:53:30,293 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-03-23 11:53:30,293 INFO L416 ceAbstractionStarter]: For program point L28''''(line 28) no Hoare annotation was computed. [2018-03-23 11:53:30,293 INFO L416 ceAbstractionStarter]: For program point mainErr2EnsuresViolationMEMORY_LEAK(lines 21 34) no Hoare annotation was computed. [2018-03-23 11:53:30,293 INFO L416 ceAbstractionStarter]: For program point mainErr1AssertViolationARRAY_INDEX(line 29) no Hoare annotation was computed. [2018-03-23 11:53:30,293 INFO L416 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-03-23 11:53:30,293 INFO L416 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-03-23 11:53:30,293 INFO L412 ceAbstractionStarter]: At program point L28'''''(lines 28 32) the Hoare annotation is: (let ((.cse0 (= |#valid| (store |old(#valid)| |main_~#mask~0.base| 1))) (.cse1 (= 32 (select |#length| |main_~#mask~0.base|))) (.cse2 (= 0 |main_~#mask~0.offset|)) (.cse3 (= (select |old(#valid)| |main_~#mask~0.base|) 0))) (or (and .cse0 .cse1 .cse2 (<= 1 main_~i~1) .cse3) (and .cse0 .cse1 .cse2 (= main_~i~1 0) .cse3))) [2018-03-23 11:53:30,293 INFO L416 ceAbstractionStarter]: For program point L25(lines 25 27) no Hoare annotation was computed. [2018-03-23 11:53:30,294 INFO L416 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-03-23 11:53:30,294 INFO L416 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-03-23 11:53:30,294 INFO L416 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-03-23 11:53:30,294 INFO L416 ceAbstractionStarter]: For program point L28(lines 28 32) no Hoare annotation was computed. [2018-03-23 11:53:30,294 INFO L416 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-03-23 11:53:30,294 INFO L416 ceAbstractionStarter]: For program point L24''(line 24) no Hoare annotation was computed. [2018-03-23 11:53:30,294 INFO L416 ceAbstractionStarter]: For program point mainFINAL(lines 21 34) no Hoare annotation was computed. [2018-03-23 11:53:30,294 INFO L416 ceAbstractionStarter]: For program point mainEXIT(lines 21 34) no Hoare annotation was computed. [2018-03-23 11:53:30,294 INFO L412 ceAbstractionStarter]: At program point mainENTRY(lines 21 34) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-03-23 11:53:30,295 INFO L412 ceAbstractionStarter]: At program point L26'(line 26) the Hoare annotation is: (let ((.cse0 (= |#valid| (store |old(#valid)| |main_~#mask~0.base| 1))) (.cse1 (= 32 (select |#length| |main_~#mask~0.base|))) (.cse2 (= 0 |main_~#mask~0.offset|)) (.cse3 (= (select |old(#valid)| |main_~#mask~0.base|) 0))) (or (and .cse0 (and .cse1 .cse2 (<= 1 main_~i~1)) .cse3) (and (= 0 main_~i~1) .cse0 .cse1 .cse2 .cse3))) [2018-03-23 11:53:30,295 INFO L416 ceAbstractionStarter]: For program point L28''(lines 28 32) no Hoare annotation was computed. [2018-03-23 11:53:30,295 INFO L416 ceAbstractionStarter]: For program point L26''(line 26) no Hoare annotation was computed. [2018-03-23 11:53:30,295 INFO L416 ceAbstractionStarter]: For program point L26'''(line 26) no Hoare annotation was computed. [2018-03-23 11:53:30,295 INFO L412 ceAbstractionStarter]: At program point L25'''''(lines 25 27) the Hoare annotation is: (let ((.cse0 (= |#valid| (store |old(#valid)| |main_~#mask~0.base| 1))) (.cse1 (= 32 (select |#length| |main_~#mask~0.base|))) (.cse2 (= 0 |main_~#mask~0.offset|)) (.cse3 (= (select |old(#valid)| |main_~#mask~0.base|) 0))) (or (and .cse0 .cse1 .cse2 (<= 1 main_~i~1) .cse3) (and .cse0 .cse1 .cse2 (= main_~i~1 0) .cse3))) [2018-03-23 11:53:30,295 INFO L416 ceAbstractionStarter]: For program point mainErr0AssertViolationARRAY_INDEX(line 26) no Hoare annotation was computed. [2018-03-23 11:53:30,295 INFO L416 ceAbstractionStarter]: For program point L25'''(line 25) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L24''''(line 24) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L25''''''(lines 25 27) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L29'(lines 29 31) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L24'''''(line 24) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L28''''''(lines 28 32) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L25''''(line 25) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L26''''(line 26) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L25''(lines 25 27) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L24'''(line 24) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L24'(line 24) no Hoare annotation was computed. [2018-03-23 11:53:30,296 INFO L416 ceAbstractionStarter]: For program point L28'''(line 28) no Hoare annotation was computed. [2018-03-23 11:53:30,304 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,305 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,308 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,309 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,311 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,311 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,312 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,312 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,313 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,314 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,315 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,315 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.03 11:53:30 BoogieIcfgContainer [2018-03-23 11:53:30,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-03-23 11:53:30,318 INFO L168 Benchmark]: Toolchain (without parser) took 10117.48 ms. Allocated memory was 307.2 MB in the beginning and 617.6 MB in the end (delta: 310.4 MB). Free memory was 252.7 MB in the beginning and 522.1 MB in the end (delta: -269.4 MB). Peak memory consumption was 241.3 MB. Max. memory is 5.3 GB. [2018-03-23 11:53:30,319 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 307.2 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-03-23 11:53:30,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.29 ms. Allocated memory is still 307.2 MB. Free memory was 251.7 MB in the beginning and 242.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-03-23 11:53:30,320 INFO L168 Benchmark]: Boogie Preprocessor took 26.33 ms. Allocated memory is still 307.2 MB. Free memory was 242.6 MB in the beginning and 240.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-03-23 11:53:30,320 INFO L168 Benchmark]: RCFGBuilder took 361.55 ms. Allocated memory was 307.2 MB in the beginning and 473.4 MB in the end (delta: 166.2 MB). Free memory was 240.5 MB in the beginning and 440.3 MB in the end (delta: -199.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 5.3 GB. [2018-03-23 11:53:30,321 INFO L168 Benchmark]: TraceAbstraction took 9518.29 ms. Allocated memory was 473.4 MB in the beginning and 617.6 MB in the end (delta: 144.2 MB). Free memory was 439.0 MB in the beginning and 522.1 MB in the end (delta: -83.1 MB). Peak memory consumption was 261.4 MB. Max. memory is 5.3 GB. [2018-03-23 11:53:30,323 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 307.2 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 206.29 ms. Allocated memory is still 307.2 MB. Free memory was 251.7 MB in the beginning and 242.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.33 ms. Allocated memory is still 307.2 MB. Free memory was 242.6 MB in the beginning and 240.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 361.55 ms. Allocated memory was 307.2 MB in the beginning and 473.4 MB in the end (delta: 166.2 MB). Free memory was 240.5 MB in the beginning and 440.3 MB in the end (delta: -199.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 9518.29 ms. Allocated memory was 473.4 MB in the beginning and 617.6 MB in the end (delta: 144.2 MB). Free memory was 439.0 MB in the beginning and 522.1 MB in the end (delta: -83.1 MB). Peak memory consumption was 261.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 29]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 26]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant [2018-03-23 11:53:30,328 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,328 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,329 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,329 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((\valid == \old(\valid)[mask := 1] && 32 == unknown-#length-unknown[mask]) && 0 == mask) && 1 <= i) && \old(\valid)[mask] == 0) || ((((\valid == \old(\valid)[mask := 1] && 32 == unknown-#length-unknown[mask]) && 0 == mask) && i == 0) && \old(\valid)[mask] == 0) - InvariantResult [Line: 28]: Loop Invariant [2018-03-23 11:53:30,330 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,331 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,332 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,332 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((\valid == \old(\valid)[mask := 1] && 32 == unknown-#length-unknown[mask]) && 0 == mask) && 1 <= i) && \old(\valid)[mask] == 0) || ((((\valid == \old(\valid)[mask := 1] && 32 == unknown-#length-unknown[mask]) && 0 == mask) && i == 0) && \old(\valid)[mask] == 0) - InvariantResult [Line: 15]: Loop Invariant [2018-03-23 11:53:30,333 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,333 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,334 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-03-23 11:53:30,334 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: (((!(32 == \old(size)) || (((((1 == \valid[b] && b == 0) && \old(size) <= size) && 0 <= b + i) && size <= 32) && 32 == unknown-#length-unknown[b])) || !(1 == \valid[b])) || !(0 == b)) || !(32 == unknown-#length-unknown[b]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 62 locations, 6 error locations. SAFE Result, 9.4s OverallTime, 16 OverallIterations, 21 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 821 SDtfs, 1516 SDslu, 3498 SDs, 0 SdLazy, 1976 SolverSat, 164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1434 GetRequests, 1138 SyntacticMatches, 20 SemanticMatches, 276 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 157 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 35 PreInvPairs, 66 NumberOfFragments, 197 HoareAnnotationTreeSize, 35 FomulaSimplifications, 1606 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1016 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 2521 NumberOfCodeBlocks, 2290 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2493 ConstructedInterpolants, 140 QuantifiedInterpolants, 1074949 SizeOfPredicates, 73 NumberOfNonLiveVariables, 1959 ConjunctsInSsa, 139 ConjunctsInUnsatCore, 28 InterpolantComputations, 6 PerfectInterpolantSequences, 7344/7894 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-03-23_11-53-30-339.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength4_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-03-23_11-53-30-339.csv Received shutdown request...