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 --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-408c70d-m [2018-04-12 15:13:44,440 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-12 15:13:44,442 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-12 15:13:44,455 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-12 15:13:44,455 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-12 15:13:44,456 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-12 15:13:44,457 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-12 15:13:44,458 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-12 15:13:44,460 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-12 15:13:44,460 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-12 15:13:44,461 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-12 15:13:44,461 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-12 15:13:44,462 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-12 15:13:44,463 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-12 15:13:44,464 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-12 15:13:44,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-12 15:13:44,466 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-12 15:13:44,468 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-12 15:13:44,469 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-12 15:13:44,469 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-12 15:13:44,471 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-12 15:13:44,471 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-12 15:13:44,471 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-12 15:13:44,472 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-12 15:13:44,473 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-12 15:13:44,474 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-12 15:13:44,474 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-12 15:13:44,475 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-12 15:13:44,475 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-12 15:13:44,475 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-12 15:13:44,476 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-12 15:13:44,476 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-04-12 15:13:44,485 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-12 15:13:44,486 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-12 15:13:44,487 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-12 15:13:44,487 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-12 15:13:44,487 INFO L133 SettingsManager]: * Use SBE=true [2018-04-12 15:13:44,487 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-12 15:13:44,487 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-12 15:13:44,487 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-12 15:13:44,488 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-12 15:13:44,488 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-12 15:13:44,488 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-12 15:13:44,488 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-12 15:13:44,488 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-12 15:13:44,488 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-12 15:13:44,488 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-12 15:13:44,489 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-12 15:13:44,489 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-12 15:13:44,489 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-12 15:13:44,489 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-12 15:13:44,489 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-12 15:13:44,489 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-12 15:13:44,489 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-12 15:13:44,490 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-12 15:13:44,490 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-04-12 15:13:44,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-12 15:13:44,530 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-12 15:13:44,533 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-12 15:13:44,534 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-12 15:13:44,536 INFO L276 PluginConnector]: CDTParser initialized [2018-04-12 15:13:44,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-12 15:13:44,904 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG2f4408c2f [2018-04-12 15:13:44,985 INFO L287 CDTParser]: IsIndexed: true [2018-04-12 15:13:44,985 INFO L288 CDTParser]: Found 1 translation units. [2018-04-12 15:13:44,986 INFO L168 CDTParser]: Scanning ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-12 15:13:44,986 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-12 15:13:44,986 INFO L215 ultiparseSymbolTable]: [2018-04-12 15:13:44,986 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-12 15:13:44,986 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo ('foo') in ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-12 15:13:44,986 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-12 15:13:44,987 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__bar ('bar') in ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-12 15:13:44,987 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-12 15:13:44,987 INFO L233 ultiparseSymbolTable]: [2018-04-12 15:13:44,999 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG2f4408c2f [2018-04-12 15:13:45,003 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-12 15:13:45,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-12 15:13:45,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-12 15:13:45,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-12 15:13:45,010 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-12 15:13:45,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.04 03:13:45" (1/1) ... [2018-04-12 15:13:45,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42afc22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45, skipping insertion in model container [2018-04-12 15:13:45,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.04 03:13:45" (1/1) ... [2018-04-12 15:13:45,027 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-12 15:13:45,037 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-12 15:13:45,158 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-12 15:13:45,184 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-12 15:13:45,188 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 10 non ball SCCs. Number of states in SCCs 10. [2018-04-12 15:13:45,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45 WrapperNode [2018-04-12 15:13:45,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-12 15:13:45,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-12 15:13:45,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-12 15:13:45,196 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-12 15:13:45,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45" (1/1) ... [2018-04-12 15:13:45,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45" (1/1) ... [2018-04-12 15:13:45,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45" (1/1) ... [2018-04-12 15:13:45,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45" (1/1) ... [2018-04-12 15:13:45,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45" (1/1) ... [2018-04-12 15:13:45,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45" (1/1) ... [2018-04-12 15:13:45,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45" (1/1) ... [2018-04-12 15:13:45,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-12 15:13:45,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-12 15:13:45,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-12 15:13:45,223 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-12 15:13:45,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-12 15:13:45,260 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-12 15:13:45,260 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-12 15:13:45,260 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__bar [2018-04-12 15:13:45,260 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo [2018-04-12 15:13:45,260 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-12 15:13:45,260 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__bar [2018-04-12 15:13:45,260 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-12 15:13:45,260 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo [2018-04-12 15:13:45,260 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-12 15:13:45,261 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-12 15:13:45,261 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-12 15:13:45,261 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-12 15:13:45,261 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-12 15:13:45,261 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-12 15:13:45,261 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-12 15:13:45,490 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-12 15:13:45,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 03:13:45 BoogieIcfgContainer [2018-04-12 15:13:45,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-12 15:13:45,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-12 15:13:45,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-12 15:13:45,493 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-12 15:13:45,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.04 03:13:45" (1/3) ... [2018-04-12 15:13:45,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565044cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.04 03:13:45, skipping insertion in model container [2018-04-12 15:13:45,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 03:13:45" (2/3) ... [2018-04-12 15:13:45,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565044cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.04 03:13:45, skipping insertion in model container [2018-04-12 15:13:45,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 03:13:45" (3/3) ... [2018-04-12 15:13:45,496 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-12 15:13:45,505 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-12 15:13:45,509 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-04-12 15:13:45,535 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-12 15:13:45,536 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-12 15:13:45,536 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-12 15:13:45,536 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-12 15:13:45,536 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-12 15:13:45,536 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-12 15:13:45,536 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-12 15:13:45,536 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-12 15:13:45,536 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-12 15:13:45,537 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-12 15:13:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2018-04-12 15:13:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-12 15:13:45,559 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:45,560 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:45,560 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:45,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1613294992, now seen corresponding path program 1 times [2018-04-12 15:13:45,564 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:45,564 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:45,597 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:45,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:45,598 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:45,622 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:45,644 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:45,644 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-04-12 15:13:45,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-04-12 15:13:45,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-04-12 15:13:45,656 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-12 15:13:45,657 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2018-04-12 15:13:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:45,674 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2018-04-12 15:13:45,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-04-12 15:13:45,675 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-04-12 15:13:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:45,684 INFO L225 Difference]: With dead ends: 68 [2018-04-12 15:13:45,684 INFO L226 Difference]: Without dead ends: 65 [2018-04-12 15:13:45,686 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-12 15:13:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-04-12 15:13:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-04-12 15:13:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-04-12 15:13:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-04-12 15:13:45,710 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 13 [2018-04-12 15:13:45,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:45,710 INFO L459 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-04-12 15:13:45,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-04-12 15:13:45,710 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-04-12 15:13:45,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-04-12 15:13:45,711 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:45,711 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:45,711 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:45,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1969953325, now seen corresponding path program 1 times [2018-04-12 15:13:45,711 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:45,711 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:45,712 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:45,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:45,712 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:45,725 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:45,752 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:45,752 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-12 15:13:45,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-12 15:13:45,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-12 15:13:45,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-12 15:13:45,754 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 3 states. [2018-04-12 15:13:45,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:45,787 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2018-04-12 15:13:45,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-12 15:13:45,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-04-12 15:13:45,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:45,790 INFO L225 Difference]: With dead ends: 71 [2018-04-12 15:13:45,790 INFO L226 Difference]: Without dead ends: 71 [2018-04-12 15:13:45,791 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-12 15:13:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-04-12 15:13:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2018-04-12 15:13:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-04-12 15:13:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-04-12 15:13:45,797 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 14 [2018-04-12 15:13:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:45,798 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-04-12 15:13:45,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-12 15:13:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-04-12 15:13:45,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-04-12 15:13:45,798 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:45,798 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:45,799 INFO L408 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:45,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1297061679, now seen corresponding path program 1 times [2018-04-12 15:13:45,799 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:45,799 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:45,800 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:45,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:45,800 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:45,813 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:45,879 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:45,879 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-04-12 15:13:45,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-12 15:13:45,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-12 15:13:45,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-04-12 15:13:45,880 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 6 states. [2018-04-12 15:13:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:45,991 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2018-04-12 15:13:45,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-12 15:13:45,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-04-12 15:13:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:45,992 INFO L225 Difference]: With dead ends: 85 [2018-04-12 15:13:45,992 INFO L226 Difference]: Without dead ends: 85 [2018-04-12 15:13:45,993 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-04-12 15:13:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-04-12 15:13:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2018-04-12 15:13:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-04-12 15:13:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2018-04-12 15:13:45,997 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 17 [2018-04-12 15:13:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:45,997 INFO L459 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2018-04-12 15:13:45,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-12 15:13:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2018-04-12 15:13:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-12 15:13:45,998 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:45,998 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:45,998 INFO L408 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:45,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184185, now seen corresponding path program 1 times [2018-04-12 15:13:45,998 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:45,998 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:45,999 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:45,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:45,999 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:46,012 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:46,036 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:46,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-12 15:13:46,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-12 15:13:46,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-12 15:13:46,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-12 15:13:46,038 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 5 states. [2018-04-12 15:13:46,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:46,136 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-04-12 15:13:46,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-12 15:13:46,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-04-12 15:13:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:46,139 INFO L225 Difference]: With dead ends: 77 [2018-04-12 15:13:46,139 INFO L226 Difference]: Without dead ends: 77 [2018-04-12 15:13:46,139 INFO L567 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 [2018-04-12 15:13:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-12 15:13:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-04-12 15:13:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-12 15:13:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-04-12 15:13:46,144 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 21 [2018-04-12 15:13:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:46,144 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-04-12 15:13:46,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-12 15:13:46,144 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-04-12 15:13:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-12 15:13:46,145 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:46,145 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:46,145 INFO L408 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:46,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184184, now seen corresponding path program 1 times [2018-04-12 15:13:46,145 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:46,145 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:46,146 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:46,146 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:46,157 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:46,198 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:46,198 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-12 15:13:46,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-12 15:13:46,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-12 15:13:46,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-04-12 15:13:46,199 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2018-04-12 15:13:46,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:46,271 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2018-04-12 15:13:46,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-12 15:13:46,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-04-12 15:13:46,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:46,272 INFO L225 Difference]: With dead ends: 89 [2018-04-12 15:13:46,272 INFO L226 Difference]: Without dead ends: 89 [2018-04-12 15:13:46,273 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-04-12 15:13:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-04-12 15:13:46,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2018-04-12 15:13:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-04-12 15:13:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2018-04-12 15:13:46,276 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 21 [2018-04-12 15:13:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:46,277 INFO L459 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2018-04-12 15:13:46,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-12 15:13:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2018-04-12 15:13:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-12 15:13:46,277 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:46,277 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:46,277 INFO L408 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:46,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1759981910, now seen corresponding path program 1 times [2018-04-12 15:13:46,278 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:46,278 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:46,279 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:46,279 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:46,291 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:46,317 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:46,317 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-12 15:13:46,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-12 15:13:46,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-12 15:13:46,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-12 15:13:46,318 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 5 states. [2018-04-12 15:13:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:46,332 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2018-04-12 15:13:46,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-12 15:13:46,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-04-12 15:13:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:46,333 INFO L225 Difference]: With dead ends: 91 [2018-04-12 15:13:46,333 INFO L226 Difference]: Without dead ends: 91 [2018-04-12 15:13:46,334 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-04-12 15:13:46,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-04-12 15:13:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2018-04-12 15:13:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-04-12 15:13:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2018-04-12 15:13:46,339 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 31 [2018-04-12 15:13:46,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:46,340 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2018-04-12 15:13:46,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-12 15:13:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2018-04-12 15:13:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-12 15:13:46,341 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:46,341 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:46,341 INFO L408 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:46,341 INFO L82 PathProgramCache]: Analyzing trace with hash 216183673, now seen corresponding path program 1 times [2018-04-12 15:13:46,341 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:46,341 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:46,342 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:46,342 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:46,363 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:46,432 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:46,432 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-12 15:13:46,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-12 15:13:46,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-12 15:13:46,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-12 15:13:46,433 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 5 states. [2018-04-12 15:13:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:46,509 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2018-04-12 15:13:46,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-12 15:13:46,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-04-12 15:13:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:46,510 INFO L225 Difference]: With dead ends: 86 [2018-04-12 15:13:46,510 INFO L226 Difference]: Without dead ends: 86 [2018-04-12 15:13:46,511 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-04-12 15:13:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-04-12 15:13:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-04-12 15:13:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-12 15:13:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2018-04-12 15:13:46,516 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 31 [2018-04-12 15:13:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:46,516 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2018-04-12 15:13:46,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-12 15:13:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2018-04-12 15:13:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-12 15:13:46,517 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:46,517 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:46,517 INFO L408 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:46,517 INFO L82 PathProgramCache]: Analyzing trace with hash 216183674, now seen corresponding path program 1 times [2018-04-12 15:13:46,517 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:46,517 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:46,518 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:46,518 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:46,529 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:46,612 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:46,612 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-12 15:13:46,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-12 15:13:46,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-12 15:13:46,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-04-12 15:13:46,614 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 8 states. [2018-04-12 15:13:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:46,785 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2018-04-12 15:13:46,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-12 15:13:46,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-04-12 15:13:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:46,786 INFO L225 Difference]: With dead ends: 101 [2018-04-12 15:13:46,786 INFO L226 Difference]: Without dead ends: 101 [2018-04-12 15:13:46,786 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-04-12 15:13:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-04-12 15:13:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2018-04-12 15:13:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-04-12 15:13:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2018-04-12 15:13:46,791 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 31 [2018-04-12 15:13:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:46,791 INFO L459 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2018-04-12 15:13:46,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-12 15:13:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2018-04-12 15:13:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-04-12 15:13:46,792 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:46,792 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:46,792 INFO L408 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:46,793 INFO L82 PathProgramCache]: Analyzing trace with hash -231887552, now seen corresponding path program 1 times [2018-04-12 15:13:46,793 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:46,793 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:46,794 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:46,794 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:46,804 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:46,853 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:46,853 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-12 15:13:46,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-12 15:13:46,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-12 15:13:46,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-12 15:13:46,854 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand 5 states. [2018-04-12 15:13:46,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:46,911 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2018-04-12 15:13:46,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-12 15:13:46,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2018-04-12 15:13:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:46,912 INFO L225 Difference]: With dead ends: 96 [2018-04-12 15:13:46,912 INFO L226 Difference]: Without dead ends: 96 [2018-04-12 15:13:46,912 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-04-12 15:13:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-04-12 15:13:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-04-12 15:13:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-04-12 15:13:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2018-04-12 15:13:46,917 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 42 [2018-04-12 15:13:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:46,917 INFO L459 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2018-04-12 15:13:46,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-12 15:13:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2018-04-12 15:13:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-04-12 15:13:46,918 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:46,918 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:46,918 INFO L408 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:46,919 INFO L82 PathProgramCache]: Analyzing trace with hash -231887551, now seen corresponding path program 1 times [2018-04-12 15:13:46,919 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:46,919 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:46,920 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:46,920 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:46,933 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:47,058 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:47,058 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:47,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:47,108 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:47,146 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-12 15:13:47,148 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:47,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-12 15:13:47,153 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:47,157 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 15:13:47,157 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-12 15:13:47,186 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| Int) (__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n Int)) (and (= 0 (select |c_old(#valid)| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base|)) (= |c_#length| (store |c_old(#length)| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| (* 4 __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n))))) is different from true [2018-04-12 15:13:47,193 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-04-12 15:13:47,194 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:47,196 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 8 treesize of output 7 [2018-04-12 15:13:47,196 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:47,198 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-12 15:13:47,198 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-12 15:13:47,229 WARN L1033 $PredicateComparison]: unable to prove that (and (exists ((v_prenex_2 Int) (v_prenex_1 Int)) (and (= (store |c_old(#length)| v_prenex_1 (* 4 v_prenex_2)) |c_#length|) (= 0 (select |c_old(#valid)| v_prenex_1)))) (exists ((|__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| Int) (__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n Int)) (= (select |c_#length| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base|) (* 4 __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n)))) is different from true [2018-04-12 15:13:47,249 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:47,250 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:47,251 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-12 15:13:47,251 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:47,262 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 14 treesize of output 17 [2018-04-12 15:13:47,263 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:47,271 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-04-12 15:13:47,271 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:34, output treesize:27 [2018-04-12 15:13:47,395 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:47,402 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2018-04-12 15:13:47,403 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-04-12 15:13:47,422 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:47,423 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:47,424 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-12 15:13:47,424 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:47,439 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2018-04-12 15:13:47,440 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:38, output treesize:52 [2018-04-12 15:13:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2018-04-12 15:13:47,529 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:47,529 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2018-04-12 15:13:47,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-12 15:13:47,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-12 15:13:47,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=322, Unknown=2, NotChecked=74, Total=462 [2018-04-12 15:13:47,530 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 22 states. [2018-04-12 15:13:48,773 WARN L1033 $PredicateComparison]: unable to prove that (and (exists ((|__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| Int) (__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n Int)) (= (select |c_#length| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base|) (* 4 __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n))) (exists ((|__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| Int) (__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n Int)) (and (= 0 (select |c_old(#valid)| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base|)) (= |c_#length| (store |c_old(#length)| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| (* 4 __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n)))))) is different from true [2018-04-12 15:13:49,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:49,433 INFO L93 Difference]: Finished difference Result 234 states and 266 transitions. [2018-04-12 15:13:49,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-12 15:13:49,434 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-04-12 15:13:49,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:49,435 INFO L225 Difference]: With dead ends: 234 [2018-04-12 15:13:49,435 INFO L226 Difference]: Without dead ends: 234 [2018-04-12 15:13:49,437 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=393, Invalid=2159, Unknown=10, NotChecked=300, Total=2862 [2018-04-12 15:13:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-04-12 15:13:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 178. [2018-04-12 15:13:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-04-12 15:13:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 207 transitions. [2018-04-12 15:13:49,446 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 207 transitions. Word has length 42 [2018-04-12 15:13:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:49,447 INFO L459 AbstractCegarLoop]: Abstraction has 178 states and 207 transitions. [2018-04-12 15:13:49,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-12 15:13:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 207 transitions. [2018-04-12 15:13:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-04-12 15:13:49,448 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:49,448 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:49,448 INFO L408 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:49,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1401420489, now seen corresponding path program 1 times [2018-04-12 15:13:49,448 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:49,451 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:49,452 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:49,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:49,452 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:49,462 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-04-12 15:13:49,538 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:49,538 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-12 15:13:49,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-12 15:13:49,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-12 15:13:49,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-04-12 15:13:49,539 INFO L87 Difference]: Start difference. First operand 178 states and 207 transitions. Second operand 8 states. [2018-04-12 15:13:49,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:49,624 INFO L93 Difference]: Finished difference Result 177 states and 204 transitions. [2018-04-12 15:13:49,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-12 15:13:49,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2018-04-12 15:13:49,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:49,625 INFO L225 Difference]: With dead ends: 177 [2018-04-12 15:13:49,625 INFO L226 Difference]: Without dead ends: 177 [2018-04-12 15:13:49,625 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-04-12 15:13:49,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-04-12 15:13:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-04-12 15:13:49,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-04-12 15:13:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 204 transitions. [2018-04-12 15:13:49,632 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 204 transitions. Word has length 43 [2018-04-12 15:13:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:49,632 INFO L459 AbstractCegarLoop]: Abstraction has 177 states and 204 transitions. [2018-04-12 15:13:49,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-12 15:13:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 204 transitions. [2018-04-12 15:13:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-12 15:13:49,633 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:49,633 INFO L355 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-04-12 15:13:49,634 INFO L408 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1644784265, now seen corresponding path program 1 times [2018-04-12 15:13:49,634 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:49,634 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:49,634 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:49,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:49,634 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:49,644 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:49,680 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:49,680 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:49,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:49,710 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 15:13:49,747 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-12 15:13:49,748 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2018-04-12 15:13:49,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-12 15:13:49,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-12 15:13:49,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-04-12 15:13:49,748 INFO L87 Difference]: Start difference. First operand 177 states and 204 transitions. Second operand 9 states. [2018-04-12 15:13:49,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:49,828 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2018-04-12 15:13:49,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-12 15:13:49,829 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2018-04-12 15:13:49,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:49,830 INFO L225 Difference]: With dead ends: 141 [2018-04-12 15:13:49,830 INFO L226 Difference]: Without dead ends: 141 [2018-04-12 15:13:49,830 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-04-12 15:13:49,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-04-12 15:13:49,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2018-04-12 15:13:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-04-12 15:13:49,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2018-04-12 15:13:49,834 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 46 [2018-04-12 15:13:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:49,837 INFO L459 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2018-04-12 15:13:49,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-12 15:13:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2018-04-12 15:13:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-04-12 15:13:49,838 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:49,838 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:49,838 INFO L408 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:49,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1096362099, now seen corresponding path program 1 times [2018-04-12 15:13:49,838 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:49,838 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:49,839 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:49,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:49,839 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:49,857 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-04-12 15:13:49,896 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 15:13:49,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-12 15:13:49,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-12 15:13:49,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-12 15:13:49,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-04-12 15:13:49,897 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand 6 states. [2018-04-12 15:13:49,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:49,954 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2018-04-12 15:13:49,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-12 15:13:49,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2018-04-12 15:13:49,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:49,955 INFO L225 Difference]: With dead ends: 143 [2018-04-12 15:13:49,955 INFO L226 Difference]: Without dead ends: 143 [2018-04-12 15:13:49,955 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-04-12 15:13:49,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-04-12 15:13:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 134. [2018-04-12 15:13:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-04-12 15:13:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2018-04-12 15:13:49,958 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 52 [2018-04-12 15:13:49,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:49,958 INFO L459 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2018-04-12 15:13:49,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-12 15:13:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2018-04-12 15:13:49,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-04-12 15:13:49,959 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:49,959 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:49,959 INFO L408 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:49,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1224161946, now seen corresponding path program 1 times [2018-04-12 15:13:49,959 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:49,959 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:49,960 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:49,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:49,960 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:49,971 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 15:13:50,035 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:50,035 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:50,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:50,063 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-12 15:13:50,148 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:50,148 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2018-04-12 15:13:50,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-12 15:13:50,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-12 15:13:50,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-04-12 15:13:50,149 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 15 states. [2018-04-12 15:13:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:50,331 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2018-04-12 15:13:50,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-12 15:13:50,331 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-04-12 15:13:50,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:50,332 INFO L225 Difference]: With dead ends: 138 [2018-04-12 15:13:50,332 INFO L226 Difference]: Without dead ends: 138 [2018-04-12 15:13:50,332 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-04-12 15:13:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-04-12 15:13:50,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-04-12 15:13:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-04-12 15:13:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2018-04-12 15:13:50,335 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 57 [2018-04-12 15:13:50,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:50,335 INFO L459 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2018-04-12 15:13:50,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-12 15:13:50,335 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2018-04-12 15:13:50,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-04-12 15:13:50,336 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:50,336 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2018-04-12 15:13:50,336 INFO L408 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:50,336 INFO L82 PathProgramCache]: Analyzing trace with hash -227989441, now seen corresponding path program 1 times [2018-04-12 15:13:50,336 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:50,336 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:50,337 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:50,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:50,337 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:50,346 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-04-12 15:13:50,421 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:50,421 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:50,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:50,458 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-12 15:13:50,549 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-12 15:13:50,549 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2018-04-12 15:13:50,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-12 15:13:50,550 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-12 15:13:50,550 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-04-12 15:13:50,550 INFO L87 Difference]: Start difference. First operand 133 states and 141 transitions. Second operand 14 states. [2018-04-12 15:13:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:50,827 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-04-12 15:13:50,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-12 15:13:50,951 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2018-04-12 15:13:50,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:50,951 INFO L225 Difference]: With dead ends: 146 [2018-04-12 15:13:50,951 INFO L226 Difference]: Without dead ends: 128 [2018-04-12 15:13:50,952 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2018-04-12 15:13:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-04-12 15:13:50,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2018-04-12 15:13:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-04-12 15:13:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2018-04-12 15:13:50,956 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 62 [2018-04-12 15:13:50,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:50,956 INFO L459 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2018-04-12 15:13:50,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-12 15:13:50,956 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2018-04-12 15:13:50,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-04-12 15:13:50,957 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:50,957 INFO L355 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:50,957 INFO L408 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:50,957 INFO L82 PathProgramCache]: Analyzing trace with hash 897277161, now seen corresponding path program 1 times [2018-04-12 15:13:50,957 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:50,957 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:50,958 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:50,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:50,958 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:50,970 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-04-12 15:13:51,116 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:51,116 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:51,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:51,141 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:51,189 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-04-12 15:13:51,190 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 8 treesize of output 7 [2018-04-12 15:13:51,190 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:51,191 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 15:13:51,194 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-12 15:13:51,194 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-04-12 15:13:51,343 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 28 [2018-04-12 15:13:51,346 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 17 treesize of output 16 [2018-04-12 15:13:51,347 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:51,354 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 15:13:51,355 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-04-12 15:13:51,356 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:15, output treesize:11 [2018-04-12 15:13:51,445 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| (store (select |c_old(#memory_int)| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base|) 0 (select (select |c_old(#memory_int)| |c___U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_#in~b.base|) |c___U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_#in~b.offset|)))) (= (select (select |c_#memory_int| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base|) 0) |c___U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_#t~ret4|))) is different from true [2018-04-12 15:13:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2018-04-12 15:13:51,520 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:51,520 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 34 [2018-04-12 15:13:51,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-12 15:13:51,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-12 15:13:51,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=939, Unknown=15, NotChecked=62, Total=1122 [2018-04-12 15:13:51,521 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand 34 states. [2018-04-12 15:13:54,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:54,785 INFO L93 Difference]: Finished difference Result 191 states and 209 transitions. [2018-04-12 15:13:54,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-04-12 15:13:54,785 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 67 [2018-04-12 15:13:54,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:54,787 INFO L225 Difference]: With dead ends: 191 [2018-04-12 15:13:54,787 INFO L226 Difference]: Without dead ends: 187 [2018-04-12 15:13:54,788 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=413, Invalid=3325, Unknown=48, NotChecked=120, Total=3906 [2018-04-12 15:13:54,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-04-12 15:13:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2018-04-12 15:13:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-04-12 15:13:54,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2018-04-12 15:13:54,794 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 67 [2018-04-12 15:13:54,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:54,794 INFO L459 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2018-04-12 15:13:54,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-12 15:13:54,795 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2018-04-12 15:13:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-04-12 15:13:54,795 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:54,795 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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] [2018-04-12 15:13:54,796 INFO L408 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:54,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2066805359, now seen corresponding path program 1 times [2018-04-12 15:13:54,796 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:54,796 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:54,797 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:54,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:54,797 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:54,811 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-04-12 15:13:54,911 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:54,911 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:54,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:54,943 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:55,016 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:55,017 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 19 treesize of output 22 [2018-04-12 15:13:55,018 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:55,026 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:55,027 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:55,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-12 15:13:55,028 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:55,033 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-04-12 15:13:55,033 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:35, output treesize:28 [2018-04-12 15:13:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-04-12 15:13:55,103 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:55,103 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2018-04-12 15:13:55,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-12 15:13:55,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-12 15:13:55,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2018-04-12 15:13:55,104 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 19 states. [2018-04-12 15:13:55,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:55,444 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2018-04-12 15:13:55,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-12 15:13:55,445 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2018-04-12 15:13:55,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:55,445 INFO L225 Difference]: With dead ends: 143 [2018-04-12 15:13:55,446 INFO L226 Difference]: Without dead ends: 143 [2018-04-12 15:13:55,446 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2018-04-12 15:13:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-04-12 15:13:55,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2018-04-12 15:13:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-04-12 15:13:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2018-04-12 15:13:55,449 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 78 [2018-04-12 15:13:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:55,450 INFO L459 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2018-04-12 15:13:55,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-12 15:13:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2018-04-12 15:13:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-04-12 15:13:55,450 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:55,451 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:55,451 INFO L408 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:55,451 INFO L82 PathProgramCache]: Analyzing trace with hash -864143526, now seen corresponding path program 1 times [2018-04-12 15:13:55,451 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:55,451 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:55,451 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:55,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:55,452 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:55,461 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-04-12 15:13:55,492 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:55,492 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:55,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:55,522 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-04-12 15:13:55,562 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:55,562 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-04-12 15:13:55,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-12 15:13:55,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-12 15:13:55,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-04-12 15:13:55,563 INFO L87 Difference]: Start difference. First operand 140 states and 149 transitions. Second operand 6 states. [2018-04-12 15:13:55,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:55,585 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2018-04-12 15:13:55,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-12 15:13:55,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-04-12 15:13:55,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:55,586 INFO L225 Difference]: With dead ends: 145 [2018-04-12 15:13:55,586 INFO L226 Difference]: Without dead ends: 145 [2018-04-12 15:13:55,587 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-04-12 15:13:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-04-12 15:13:55,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2018-04-12 15:13:55,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-04-12 15:13:55,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2018-04-12 15:13:55,589 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 80 [2018-04-12 15:13:55,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:55,589 INFO L459 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2018-04-12 15:13:55,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-12 15:13:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2018-04-12 15:13:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-04-12 15:13:55,590 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:55,590 INFO L355 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-04-12 15:13:55,590 INFO L408 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:55,590 INFO L82 PathProgramCache]: Analyzing trace with hash -999779067, now seen corresponding path program 2 times [2018-04-12 15:13:55,590 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:55,590 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:55,591 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:55,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:55,591 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:55,602 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-04-12 15:13:55,744 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:55,744 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:55,749 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 15:13:55,771 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 15:13:55,772 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:13:55,774 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:55,849 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:55,849 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:56,092 INFO L303 Elim1Store]: Index analysis took 244 ms [2018-04-12 15:13:56,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-12 15:13:56,092 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:56,100 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 19 treesize of output 22 [2018-04-12 15:13:56,100 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:56,106 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-04-12 15:13:56,106 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:37, output treesize:30 [2018-04-12 15:13:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-04-12 15:13:56,243 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:56,243 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2018-04-12 15:13:56,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-12 15:13:56,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-12 15:13:56,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2018-04-12 15:13:56,244 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand 22 states. [2018-04-12 15:13:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:56,680 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2018-04-12 15:13:56,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-04-12 15:13:56,681 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 84 [2018-04-12 15:13:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:56,681 INFO L225 Difference]: With dead ends: 141 [2018-04-12 15:13:56,681 INFO L226 Difference]: Without dead ends: 141 [2018-04-12 15:13:56,682 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2018-04-12 15:13:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-04-12 15:13:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2018-04-12 15:13:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-04-12 15:13:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2018-04-12 15:13:56,684 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 84 [2018-04-12 15:13:56,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:56,684 INFO L459 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2018-04-12 15:13:56,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-12 15:13:56,684 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2018-04-12 15:13:56,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-04-12 15:13:56,685 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:56,685 INFO L355 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-04-12 15:13:56,685 INFO L408 AbstractCegarLoop]: === Iteration 20 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:56,685 INFO L82 PathProgramCache]: Analyzing trace with hash 311899052, now seen corresponding path program 2 times [2018-04-12 15:13:56,685 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:56,685 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:56,686 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:56,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:13:56,686 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:56,695 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-04-12 15:13:56,777 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:56,777 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:56,783 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 15:13:56,806 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 15:13:56,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:13:56,808 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-04-12 15:13:56,881 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:56,881 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-04-12 15:13:56,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-12 15:13:56,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-12 15:13:56,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-04-12 15:13:56,882 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 17 states. [2018-04-12 15:13:57,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:57,140 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2018-04-12 15:13:57,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-12 15:13:57,140 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 93 [2018-04-12 15:13:57,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:57,141 INFO L225 Difference]: With dead ends: 148 [2018-04-12 15:13:57,141 INFO L226 Difference]: Without dead ends: 148 [2018-04-12 15:13:57,141 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2018-04-12 15:13:57,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-04-12 15:13:57,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 141. [2018-04-12 15:13:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-04-12 15:13:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2018-04-12 15:13:57,144 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 93 [2018-04-12 15:13:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:57,144 INFO L459 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2018-04-12 15:13:57,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-12 15:13:57,144 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2018-04-12 15:13:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-04-12 15:13:57,145 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:57,145 INFO L355 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:57,145 INFO L408 AbstractCegarLoop]: === Iteration 21 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:57,145 INFO L82 PathProgramCache]: Analyzing trace with hash -52037211, now seen corresponding path program 2 times [2018-04-12 15:13:57,145 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:57,146 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:57,146 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:57,146 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:13:57,146 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:57,162 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 68 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-04-12 15:13:57,268 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:57,268 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:57,273 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 15:13:57,299 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 15:13:57,299 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:13:57,301 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-04-12 15:13:57,386 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:57,386 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2018-04-12 15:13:57,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-12 15:13:57,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-12 15:13:57,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-04-12 15:13:57,387 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand 19 states. [2018-04-12 15:13:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:57,623 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2018-04-12 15:13:57,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-12 15:13:57,623 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 109 [2018-04-12 15:13:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:57,624 INFO L225 Difference]: With dead ends: 164 [2018-04-12 15:13:57,624 INFO L226 Difference]: Without dead ends: 138 [2018-04-12 15:13:57,624 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2018-04-12 15:13:57,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-04-12 15:13:57,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2018-04-12 15:13:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-04-12 15:13:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2018-04-12 15:13:57,628 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 109 [2018-04-12 15:13:57,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:57,628 INFO L459 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2018-04-12 15:13:57,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-12 15:13:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2018-04-12 15:13:57,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-04-12 15:13:57,629 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:57,629 INFO L355 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:57,629 INFO L408 AbstractCegarLoop]: === Iteration 22 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1577506560, now seen corresponding path program 3 times [2018-04-12 15:13:57,629 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:57,629 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:57,630 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:57,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:13:57,630 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:57,648 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 10 proven. 65 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-04-12 15:13:57,969 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:57,969 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:57,974 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 15:13:58,008 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-04-12 15:13:58,008 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:13:58,010 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:58,015 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-12 15:13:58,016 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,036 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-12 15:13:58,036 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,039 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,040 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-12 15:13:58,055 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| Int) (__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n Int)) (and (= 0 (select |c_old(#valid)| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base|)) (= |c_#length| (store |c_old(#length)| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| (* 4 __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n))))) is different from true [2018-04-12 15:13:58,058 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 8 treesize of output 7 [2018-04-12 15:13:58,059 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-04-12 15:13:58,062 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,063 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-12 15:13:58,064 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-12 15:13:58,094 WARN L1033 $PredicateComparison]: unable to prove that (and (exists ((v_prenex_6 Int) (v_prenex_5 Int)) (and (= (store |c_old(#length)| v_prenex_5 (* 4 v_prenex_6)) |c_#length|) (= 0 (select |c_old(#valid)| v_prenex_5)))) (exists ((|__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| Int) (__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n Int)) (= (select |c_#length| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base|) (* 4 __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n)))) is different from true [2018-04-12 15:13:58,124 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:58,125 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 14 treesize of output 17 [2018-04-12 15:13:58,126 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,135 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:58,135 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:58,136 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-12 15:13:58,136 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,143 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-04-12 15:13:58,143 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:34, output treesize:27 [2018-04-12 15:13:58,228 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-04-12 15:13:58,228 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,230 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 8 treesize of output 7 [2018-04-12 15:13:58,230 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,232 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-12 15:13:58,232 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-12 15:13:58,240 WARN L1033 $PredicateComparison]: unable to prove that (and (exists ((|__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| Int) (__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n Int)) (= (select |c_#length| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base|) (* 4 __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n))) (exists ((v_prenex_7 Int) (v_prenex_8 Int)) (and (= |c_#length| (store |c_old(#length)| v_prenex_7 (* 4 v_prenex_8))) (= 0 (select |c_old(#valid)| v_prenex_7))))) is different from true [2018-04-12 15:13:58,251 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:58,263 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2018-04-12 15:13:58,264 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-04-12 15:13:58,292 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:58,292 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:58,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-12 15:13:58,293 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,307 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, End of recursive call: 10 dim-0 vars, and 2 xjuncts. [2018-04-12 15:13:58,308 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:45, output treesize:66 [2018-04-12 15:13:58,437 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 8 treesize of output 7 [2018-04-12 15:13:58,437 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,441 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 5 treesize of output 1 [2018-04-12 15:13:58,441 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,444 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-12 15:13:58,444 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-12 15:13:58,453 WARN L1033 $PredicateComparison]: unable to prove that (and (exists ((|__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base| Int) (__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n Int)) (= (select |c_#length| |__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~#a~0.base|) (* 4 __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo_~n))) (exists ((v_prenex_14 Int) (v_prenex_13 Int)) (and (= |c_#length| (store |c_old(#length)| v_prenex_13 (* 4 v_prenex_14))) (= 0 (select |c_old(#valid)| v_prenex_13))))) is different from true [2018-04-12 15:13:58,464 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:58,475 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2018-04-12 15:13:58,476 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-04-12 15:13:58,507 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:58,508 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 15:13:58,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-12 15:13:58,508 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 15:13:58,526 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 12 dim-0 vars, and 2 xjuncts. [2018-04-12 15:13:58,526 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:60, output treesize:96 [2018-04-12 15:13:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 14 not checked. [2018-04-12 15:13:58,620 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:58,620 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14] total 32 [2018-04-12 15:13:58,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-04-12 15:13:58,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-04-12 15:13:58,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=697, Unknown=4, NotChecked=228, Total=1056 [2018-04-12 15:13:58,621 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand 33 states. [2018-04-12 15:13:59,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:59,309 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2018-04-12 15:13:59,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-12 15:13:59,309 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 114 [2018-04-12 15:13:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:59,310 INFO L225 Difference]: With dead ends: 134 [2018-04-12 15:13:59,310 INFO L226 Difference]: Without dead ends: 134 [2018-04-12 15:13:59,310 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=265, Invalid=1387, Unknown=4, NotChecked=324, Total=1980 [2018-04-12 15:13:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-04-12 15:13:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-04-12 15:13:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-04-12 15:13:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2018-04-12 15:13:59,314 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 114 [2018-04-12 15:13:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:59,314 INFO L459 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2018-04-12 15:13:59,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-04-12 15:13:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2018-04-12 15:13:59,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-04-12 15:13:59,315 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:59,315 INFO L355 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:59,315 INFO L408 AbstractCegarLoop]: === Iteration 23 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:59,315 INFO L82 PathProgramCache]: Analyzing trace with hash -308556470, now seen corresponding path program 1 times [2018-04-12 15:13:59,315 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:59,315 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:59,316 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:59,316 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:13:59,316 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:59,328 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-04-12 15:13:59,372 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:59,372 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-04-12 15:13:59,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:59,425 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-04-12 15:13:59,468 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:59,469 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-04-12 15:13:59,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-12 15:13:59,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-12 15:13:59,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-04-12 15:13:59,469 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand 7 states. [2018-04-12 15:13:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:59,499 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-04-12 15:13:59,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-12 15:13:59,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2018-04-12 15:13:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:59,500 INFO L225 Difference]: With dead ends: 146 [2018-04-12 15:13:59,500 INFO L226 Difference]: Without dead ends: 146 [2018-04-12 15:13:59,501 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-04-12 15:13:59,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-04-12 15:13:59,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-04-12 15:13:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-04-12 15:13:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 146 transitions. [2018-04-12 15:13:59,504 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 146 transitions. Word has length 122 [2018-04-12 15:13:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:13:59,504 INFO L459 AbstractCegarLoop]: Abstraction has 141 states and 146 transitions. [2018-04-12 15:13:59,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-12 15:13:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 146 transitions. [2018-04-12 15:13:59,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-04-12 15:13:59,505 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:13:59,505 INFO L355 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:13:59,506 INFO L408 AbstractCegarLoop]: === Iteration 24 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:13:59,506 INFO L82 PathProgramCache]: Analyzing trace with hash -974589226, now seen corresponding path program 2 times [2018-04-12 15:13:59,506 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:13:59,506 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:13:59,507 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:59,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:13:59,507 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:13:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:13:59,524 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:13:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-04-12 15:13:59,600 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:13:59,600 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:13:59,607 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 15:13:59,670 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 15:13:59,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:13:59,674 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:13:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 133 proven. 10 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2018-04-12 15:13:59,785 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:13:59,785 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 16 [2018-04-12 15:13:59,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-12 15:13:59,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-12 15:13:59,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-04-12 15:13:59,786 INFO L87 Difference]: Start difference. First operand 141 states and 146 transitions. Second operand 16 states. [2018-04-12 15:13:59,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:13:59,994 INFO L93 Difference]: Finished difference Result 208 states and 221 transitions. [2018-04-12 15:13:59,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-12 15:13:59,994 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 169 [2018-04-12 15:13:59,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:13:59,995 INFO L225 Difference]: With dead ends: 208 [2018-04-12 15:13:59,996 INFO L226 Difference]: Without dead ends: 208 [2018-04-12 15:13:59,996 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2018-04-12 15:13:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-04-12 15:13:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2018-04-12 15:13:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-04-12 15:14:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 189 transitions. [2018-04-12 15:14:00,000 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 189 transitions. Word has length 169 [2018-04-12 15:14:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:00,001 INFO L459 AbstractCegarLoop]: Abstraction has 180 states and 189 transitions. [2018-04-12 15:14:00,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-12 15:14:00,001 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 189 transitions. [2018-04-12 15:14:00,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-04-12 15:14:00,002 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:00,002 INFO L355 BasicCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 9, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:00,002 INFO L408 AbstractCegarLoop]: === Iteration 25 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:00,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1271505270, now seen corresponding path program 3 times [2018-04-12 15:14:00,003 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:00,003 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:00,003 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:00,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:00,004 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:00,028 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2018-04-12 15:14:00,096 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:00,096 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:00,104 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 15:14:00,132 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-04-12 15:14:00,132 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:14:00,135 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2018-04-12 15:14:00,237 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-12 15:14:00,238 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2018-04-12 15:14:00,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-04-12 15:14:00,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-04-12 15:14:00,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-04-12 15:14:00,239 INFO L87 Difference]: Start difference. First operand 180 states and 189 transitions. Second operand 11 states. [2018-04-12 15:14:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:00,406 INFO L93 Difference]: Finished difference Result 191 states and 202 transitions. [2018-04-12 15:14:00,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-12 15:14:00,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2018-04-12 15:14:00,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:00,408 INFO L225 Difference]: With dead ends: 191 [2018-04-12 15:14:00,408 INFO L226 Difference]: Without dead ends: 191 [2018-04-12 15:14:00,408 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2018-04-12 15:14:00,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-04-12 15:14:00,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2018-04-12 15:14:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-04-12 15:14:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2018-04-12 15:14:00,413 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 228 [2018-04-12 15:14:00,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:00,413 INFO L459 AbstractCegarLoop]: Abstraction has 183 states and 193 transitions. [2018-04-12 15:14:00,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-04-12 15:14:00,413 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 193 transitions. [2018-04-12 15:14:00,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-04-12 15:14:00,414 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:00,414 INFO L355 BasicCegarLoop]: trace histogram [18, 15, 12, 12, 12, 12, 12, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:00,414 INFO L408 AbstractCegarLoop]: === Iteration 26 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:00,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1986892732, now seen corresponding path program 1 times [2018-04-12 15:14:00,415 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:00,415 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:00,415 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:00,415 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:00,415 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:00,446 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2018-04-12 15:14:00,561 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:00,562 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:00,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:14:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:00,668 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 844 proven. 9 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-04-12 15:14:00,840 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:00,840 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2018-04-12 15:14:00,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-12 15:14:00,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-12 15:14:00,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-04-12 15:14:00,842 INFO L87 Difference]: Start difference. First operand 183 states and 193 transitions. Second operand 19 states. [2018-04-12 15:14:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:01,131 INFO L93 Difference]: Finished difference Result 223 states and 239 transitions. [2018-04-12 15:14:01,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-12 15:14:01,158 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 286 [2018-04-12 15:14:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:01,159 INFO L225 Difference]: With dead ends: 223 [2018-04-12 15:14:01,159 INFO L226 Difference]: Without dead ends: 206 [2018-04-12 15:14:01,160 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2018-04-12 15:14:01,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-04-12 15:14:01,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 198. [2018-04-12 15:14:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-04-12 15:14:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 209 transitions. [2018-04-12 15:14:01,163 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 209 transitions. Word has length 286 [2018-04-12 15:14:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:01,163 INFO L459 AbstractCegarLoop]: Abstraction has 198 states and 209 transitions. [2018-04-12 15:14:01,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-12 15:14:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 209 transitions. [2018-04-12 15:14:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-04-12 15:14:01,165 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:01,165 INFO L355 BasicCegarLoop]: trace histogram [22, 22, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:01,165 INFO L408 AbstractCegarLoop]: === Iteration 27 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:01,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1059600550, now seen corresponding path program 2 times [2018-04-12 15:14:01,165 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:01,165 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:01,166 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:01,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:14:01,166 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:01,189 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 1933 trivial. 0 not checked. [2018-04-12 15:14:01,303 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:01,303 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:01,309 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 15:14:01,395 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 15:14:01,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:14:01,401 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 1284 proven. 24 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2018-04-12 15:14:01,648 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:01,648 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2018-04-12 15:14:01,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-04-12 15:14:01,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-04-12 15:14:01,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-04-12 15:14:01,650 INFO L87 Difference]: Start difference. First operand 198 states and 209 transitions. Second operand 21 states. [2018-04-12 15:14:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:02,172 INFO L93 Difference]: Finished difference Result 305 states and 332 transitions. [2018-04-12 15:14:02,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-12 15:14:02,172 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 359 [2018-04-12 15:14:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:02,173 INFO L225 Difference]: With dead ends: 305 [2018-04-12 15:14:02,173 INFO L226 Difference]: Without dead ends: 305 [2018-04-12 15:14:02,173 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2018-04-12 15:14:02,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-04-12 15:14:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 243. [2018-04-12 15:14:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-04-12 15:14:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 258 transitions. [2018-04-12 15:14:02,180 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 258 transitions. Word has length 359 [2018-04-12 15:14:02,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:02,180 INFO L459 AbstractCegarLoop]: Abstraction has 243 states and 258 transitions. [2018-04-12 15:14:02,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-04-12 15:14:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 258 transitions. [2018-04-12 15:14:02,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-04-12 15:14:02,183 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:02,184 INFO L355 BasicCegarLoop]: trace histogram [30, 26, 22, 22, 22, 22, 22, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:02,184 INFO L408 AbstractCegarLoop]: === Iteration 28 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:02,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1405874031, now seen corresponding path program 3 times [2018-04-12 15:14:02,184 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:02,185 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:02,185 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:02,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:02,185 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:02,302 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3483 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 3271 trivial. 0 not checked. [2018-04-12 15:14:02,487 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:02,487 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:02,493 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 15:14:02,586 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-04-12 15:14:02,586 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:14:02,592 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3483 backedges. 973 proven. 21 refuted. 0 times theorem prover too weak. 2489 trivial. 0 not checked. [2018-04-12 15:14:02,793 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:02,793 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2018-04-12 15:14:02,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-12 15:14:02,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-12 15:14:02,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-04-12 15:14:02,794 INFO L87 Difference]: Start difference. First operand 243 states and 258 transitions. Second operand 18 states. [2018-04-12 15:14:03,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:03,090 INFO L93 Difference]: Finished difference Result 349 states and 389 transitions. [2018-04-12 15:14:03,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-12 15:14:03,091 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 441 [2018-04-12 15:14:03,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:03,093 INFO L225 Difference]: With dead ends: 349 [2018-04-12 15:14:03,094 INFO L226 Difference]: Without dead ends: 340 [2018-04-12 15:14:03,094 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-04-12 15:14:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-04-12 15:14:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2018-04-12 15:14:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-04-12 15:14:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 289 transitions. [2018-04-12 15:14:03,102 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 289 transitions. Word has length 441 [2018-04-12 15:14:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:03,103 INFO L459 AbstractCegarLoop]: Abstraction has 266 states and 289 transitions. [2018-04-12 15:14:03,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-12 15:14:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 289 transitions. [2018-04-12 15:14:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-04-12 15:14:03,106 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:03,106 INFO L355 BasicCegarLoop]: trace histogram [35, 35, 26, 26, 26, 26, 26, 26, 26, 26, 26, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:03,106 INFO L408 AbstractCegarLoop]: === Iteration 29 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1260936207, now seen corresponding path program 4 times [2018-04-12 15:14:03,107 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:03,107 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:03,108 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:03,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:03,108 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:03,161 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 5131 trivial. 0 not checked. [2018-04-12 15:14:03,519 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:03,519 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:03,567 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-12 15:14:03,701 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-12 15:14:03,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:14:03,708 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 3198 proven. 44 refuted. 0 times theorem prover too weak. 2159 trivial. 0 not checked. [2018-04-12 15:14:03,957 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:03,957 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2018-04-12 15:14:03,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-12 15:14:03,957 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-12 15:14:03,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2018-04-12 15:14:03,958 INFO L87 Difference]: Start difference. First operand 266 states and 289 transitions. Second operand 25 states. [2018-04-12 15:14:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:04,297 INFO L93 Difference]: Finished difference Result 602 states and 697 transitions. [2018-04-12 15:14:04,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-04-12 15:14:04,297 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 530 [2018-04-12 15:14:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:04,301 INFO L225 Difference]: With dead ends: 602 [2018-04-12 15:14:04,301 INFO L226 Difference]: Without dead ends: 602 [2018-04-12 15:14:04,302 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=294, Invalid=1266, Unknown=0, NotChecked=0, Total=1560 [2018-04-12 15:14:04,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2018-04-12 15:14:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 317. [2018-04-12 15:14:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-04-12 15:14:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 345 transitions. [2018-04-12 15:14:04,312 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 345 transitions. Word has length 530 [2018-04-12 15:14:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:04,313 INFO L459 AbstractCegarLoop]: Abstraction has 317 states and 345 transitions. [2018-04-12 15:14:04,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-12 15:14:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 345 transitions. [2018-04-12 15:14:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-04-12 15:14:04,317 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:04,318 INFO L355 BasicCegarLoop]: trace histogram [45, 39, 35, 35, 35, 35, 35, 29, 29, 29, 29, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:04,318 INFO L408 AbstractCegarLoop]: === Iteration 30 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:04,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1579835560, now seen corresponding path program 5 times [2018-04-12 15:14:04,318 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:04,318 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:04,319 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:04,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:04,319 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:04,439 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7993 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 7658 trivial. 0 not checked. [2018-04-12 15:14:04,711 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:04,711 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:04,716 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-12 15:14:07,370 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-04-12 15:14:07,370 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:14:07,385 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7993 backedges. 4046 proven. 128 refuted. 0 times theorem prover too weak. 3819 trivial. 0 not checked. [2018-04-12 15:14:07,776 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:07,776 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2018-04-12 15:14:07,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-04-12 15:14:07,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-04-12 15:14:07,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2018-04-12 15:14:07,778 INFO L87 Difference]: Start difference. First operand 317 states and 345 transitions. Second operand 27 states. [2018-04-12 15:14:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:08,257 INFO L93 Difference]: Finished difference Result 369 states and 396 transitions. [2018-04-12 15:14:08,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-12 15:14:08,257 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 624 [2018-04-12 15:14:08,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:08,259 INFO L225 Difference]: With dead ends: 369 [2018-04-12 15:14:08,259 INFO L226 Difference]: Without dead ends: 353 [2018-04-12 15:14:08,260 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=1929, Unknown=0, NotChecked=0, Total=2256 [2018-04-12 15:14:08,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-04-12 15:14:08,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 334. [2018-04-12 15:14:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-04-12 15:14:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 356 transitions. [2018-04-12 15:14:08,264 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 356 transitions. Word has length 624 [2018-04-12 15:14:08,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:08,264 INFO L459 AbstractCegarLoop]: Abstraction has 334 states and 356 transitions. [2018-04-12 15:14:08,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-04-12 15:14:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 356 transitions. [2018-04-12 15:14:08,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-04-12 15:14:08,267 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:08,268 INFO L355 BasicCegarLoop]: trace histogram [51, 45, 40, 40, 40, 40, 40, 34, 34, 34, 34, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:08,268 INFO L408 AbstractCegarLoop]: === Iteration 31 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:08,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1723936527, now seen corresponding path program 6 times [2018-04-12 15:14:08,268 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:08,268 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:08,269 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:08,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:08,269 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:08,320 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10474 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 10067 trivial. 0 not checked. [2018-04-12 15:14:08,717 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:08,717 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:08,724 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-12 15:14:12,758 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-04-12 15:14:12,758 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:14:12,769 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 10474 backedges. 2204 proven. 38 refuted. 0 times theorem prover too weak. 8232 trivial. 0 not checked. [2018-04-12 15:14:13,192 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:13,193 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-04-12 15:14:13,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-12 15:14:13,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-12 15:14:13,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-04-12 15:14:13,194 INFO L87 Difference]: Start difference. First operand 334 states and 356 transitions. Second operand 24 states. [2018-04-12 15:14:13,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:13,491 INFO L93 Difference]: Finished difference Result 534 states and 604 transitions. [2018-04-12 15:14:13,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-04-12 15:14:13,492 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 704 [2018-04-12 15:14:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:13,494 INFO L225 Difference]: With dead ends: 534 [2018-04-12 15:14:13,494 INFO L226 Difference]: Without dead ends: 525 [2018-04-12 15:14:13,494 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2018-04-12 15:14:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2018-04-12 15:14:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 357. [2018-04-12 15:14:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-04-12 15:14:13,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 388 transitions. [2018-04-12 15:14:13,501 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 388 transitions. Word has length 704 [2018-04-12 15:14:13,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:13,501 INFO L459 AbstractCegarLoop]: Abstraction has 357 states and 388 transitions. [2018-04-12 15:14:13,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-12 15:14:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 388 transitions. [2018-04-12 15:14:13,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-04-12 15:14:13,505 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:13,505 INFO L355 BasicCegarLoop]: trace histogram [57, 57, 45, 45, 45, 45, 45, 45, 45, 45, 45, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:13,505 INFO L408 AbstractCegarLoop]: === Iteration 32 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:13,506 INFO L82 PathProgramCache]: Analyzing trace with hash 324361008, now seen corresponding path program 7 times [2018-04-12 15:14:13,506 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:13,506 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:13,506 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:13,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:13,507 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:13,556 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14684 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 14198 trivial. 0 not checked. [2018-04-12 15:14:13,900 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:13,900 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:13,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:14:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:14,065 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 14684 backedges. 8198 proven. 70 refuted. 0 times theorem prover too weak. 6416 trivial. 0 not checked. [2018-04-12 15:14:14,666 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:14,666 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 30 [2018-04-12 15:14:14,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-12 15:14:14,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-12 15:14:14,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2018-04-12 15:14:14,668 INFO L87 Difference]: Start difference. First operand 357 states and 388 transitions. Second operand 30 states. [2018-04-12 15:14:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:15,025 INFO L93 Difference]: Finished difference Result 876 states and 1019 transitions. [2018-04-12 15:14:15,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-04-12 15:14:15,026 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 814 [2018-04-12 15:14:15,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:15,030 INFO L225 Difference]: With dead ends: 876 [2018-04-12 15:14:15,030 INFO L226 Difference]: Without dead ends: 876 [2018-04-12 15:14:15,031 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=440, Invalid=1912, Unknown=0, NotChecked=0, Total=2352 [2018-04-12 15:14:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2018-04-12 15:14:15,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 414. [2018-04-12 15:14:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-04-12 15:14:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 450 transitions. [2018-04-12 15:14:15,044 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 450 transitions. Word has length 814 [2018-04-12 15:14:15,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:15,045 INFO L459 AbstractCegarLoop]: Abstraction has 414 states and 450 transitions. [2018-04-12 15:14:15,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-12 15:14:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 450 transitions. [2018-04-12 15:14:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-04-12 15:14:15,053 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:15,053 INFO L355 BasicCegarLoop]: trace histogram [70, 62, 57, 57, 57, 57, 57, 49, 49, 49, 49, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:15,053 INFO L408 AbstractCegarLoop]: === Iteration 33 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash -362362842, now seen corresponding path program 8 times [2018-04-12 15:14:15,054 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:15,054 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:15,055 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:15,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:14:15,055 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:15,143 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20144 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 19572 trivial. 0 not checked. [2018-04-12 15:14:15,577 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:15,577 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:15,590 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 15:14:15,854 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 15:14:15,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:14:15,872 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20144 backedges. 9377 proven. 38 refuted. 0 times theorem prover too weak. 10729 trivial. 0 not checked. [2018-04-12 15:14:16,431 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:16,431 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2018-04-12 15:14:16,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-12 15:14:16,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-12 15:14:16,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2018-04-12 15:14:16,433 INFO L87 Difference]: Start difference. First operand 414 states and 450 transitions. Second operand 30 states. [2018-04-12 15:14:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:16,884 INFO L93 Difference]: Finished difference Result 456 states and 491 transitions. [2018-04-12 15:14:16,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-04-12 15:14:16,884 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 931 [2018-04-12 15:14:16,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:16,885 INFO L225 Difference]: With dead ends: 456 [2018-04-12 15:14:16,885 INFO L226 Difference]: Without dead ends: 440 [2018-04-12 15:14:16,886 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 918 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=439, Invalid=1913, Unknown=0, NotChecked=0, Total=2352 [2018-04-12 15:14:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2018-04-12 15:14:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 413. [2018-04-12 15:14:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-04-12 15:14:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 441 transitions. [2018-04-12 15:14:16,893 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 441 transitions. Word has length 931 [2018-04-12 15:14:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:16,893 INFO L459 AbstractCegarLoop]: Abstraction has 413 states and 441 transitions. [2018-04-12 15:14:16,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-12 15:14:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 441 transitions. [2018-04-12 15:14:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2018-04-12 15:14:16,902 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:16,902 INFO L355 BasicCegarLoop]: trace histogram [77, 69, 63, 63, 63, 63, 63, 55, 55, 55, 55, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:16,903 INFO L408 AbstractCegarLoop]: === Iteration 34 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:16,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1709282318, now seen corresponding path program 9 times [2018-04-12 15:14:16,903 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:16,903 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:16,904 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:16,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:16,904 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:16,997 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 24702 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 24037 trivial. 0 not checked. [2018-04-12 15:14:17,675 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:17,675 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:17,680 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 15:14:17,989 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-04-12 15:14:17,989 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:14:17,996 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 24702 backedges. 7406 proven. 327 refuted. 0 times theorem prover too weak. 16969 trivial. 0 not checked. [2018-04-12 15:14:18,567 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:18,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 37 [2018-04-12 15:14:18,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-04-12 15:14:18,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-04-12 15:14:18,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1109, Unknown=0, NotChecked=0, Total=1332 [2018-04-12 15:14:18,569 INFO L87 Difference]: Start difference. First operand 413 states and 441 transitions. Second operand 37 states. [2018-04-12 15:14:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:19,214 INFO L93 Difference]: Finished difference Result 741 states and 848 transitions. [2018-04-12 15:14:19,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-04-12 15:14:19,214 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 1022 [2018-04-12 15:14:19,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:19,216 INFO L225 Difference]: With dead ends: 741 [2018-04-12 15:14:19,216 INFO L226 Difference]: Without dead ends: 732 [2018-04-12 15:14:19,217 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1003 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=553, Invalid=3107, Unknown=0, NotChecked=0, Total=3660 [2018-04-12 15:14:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2018-04-12 15:14:19,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 464. [2018-04-12 15:14:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2018-04-12 15:14:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 506 transitions. [2018-04-12 15:14:19,223 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 506 transitions. Word has length 1022 [2018-04-12 15:14:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:19,223 INFO L459 AbstractCegarLoop]: Abstraction has 464 states and 506 transitions. [2018-04-12 15:14:19,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-04-12 15:14:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 506 transitions. [2018-04-12 15:14:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1154 [2018-04-12 15:14:19,230 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:19,230 INFO L355 BasicCegarLoop]: trace histogram [84, 84, 69, 69, 69, 69, 69, 69, 69, 69, 69, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 13, 13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:19,230 INFO L408 AbstractCegarLoop]: === Iteration 35 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:19,230 INFO L82 PathProgramCache]: Analyzing trace with hash 452446382, now seen corresponding path program 10 times [2018-04-12 15:14:19,230 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:19,230 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:19,231 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:19,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:19,231 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:19,298 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 32549 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 31784 trivial. 0 not checked. [2018-04-12 15:14:20,123 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:20,123 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:20,129 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-12 15:14:20,349 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-12 15:14:20,349 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:14:20,361 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 32549 backedges. 17085 proven. 102 refuted. 0 times theorem prover too weak. 15362 trivial. 0 not checked. [2018-04-12 15:14:20,895 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:20,895 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2018-04-12 15:14:20,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-12 15:14:20,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-12 15:14:20,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=946, Unknown=0, NotChecked=0, Total=1190 [2018-04-12 15:14:20,897 INFO L87 Difference]: Start difference. First operand 464 states and 506 transitions. Second operand 35 states. [2018-04-12 15:14:21,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:21,390 INFO L93 Difference]: Finished difference Result 1209 states and 1418 transitions. [2018-04-12 15:14:21,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-04-12 15:14:21,391 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 1153 [2018-04-12 15:14:21,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:21,395 INFO L225 Difference]: With dead ends: 1209 [2018-04-12 15:14:21,395 INFO L226 Difference]: Without dead ends: 1209 [2018-04-12 15:14:21,396 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=617, Invalid=2689, Unknown=0, NotChecked=0, Total=3306 [2018-04-12 15:14:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2018-04-12 15:14:21,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 527. [2018-04-12 15:14:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-04-12 15:14:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 574 transitions. [2018-04-12 15:14:21,408 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 574 transitions. Word has length 1153 [2018-04-12 15:14:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:21,409 INFO L459 AbstractCegarLoop]: Abstraction has 527 states and 574 transitions. [2018-04-12 15:14:21,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-12 15:14:21,409 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 574 transitions. [2018-04-12 15:14:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1294 [2018-04-12 15:14:21,418 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:21,418 INFO L355 BasicCegarLoop]: trace histogram [100, 90, 84, 84, 84, 84, 84, 74, 74, 74, 74, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:21,418 INFO L408 AbstractCegarLoop]: === Iteration 36 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:21,418 INFO L82 PathProgramCache]: Analyzing trace with hash 2142572569, now seen corresponding path program 11 times [2018-04-12 15:14:21,419 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:21,419 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:21,419 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:21,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:21,420 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:21,518 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 42453 backedges. 0 proven. 872 refuted. 0 times theorem prover too weak. 41581 trivial. 0 not checked. [2018-04-12 15:14:22,475 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:22,490 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:22,495 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-12 15:14:38,919 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-04-12 15:14:38,919 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:14:38,936 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:14:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 42453 backedges. 18458 proven. 92 refuted. 0 times theorem prover too weak. 23903 trivial. 0 not checked. [2018-04-12 15:14:39,544 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:14:39,545 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33 [2018-04-12 15:14:39,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-04-12 15:14:39,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-04-12 15:14:39,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2018-04-12 15:14:39,546 INFO L87 Difference]: Start difference. First operand 527 states and 574 transitions. Second operand 33 states. [2018-04-12 15:14:40,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:14:40,094 INFO L93 Difference]: Finished difference Result 722 states and 818 transitions. [2018-04-12 15:14:40,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-04-12 15:14:40,094 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1293 [2018-04-12 15:14:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:14:40,096 INFO L225 Difference]: With dead ends: 722 [2018-04-12 15:14:40,096 INFO L226 Difference]: Without dead ends: 722 [2018-04-12 15:14:40,096 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 1280 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2018-04-12 15:14:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2018-04-12 15:14:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 616. [2018-04-12 15:14:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2018-04-12 15:14:40,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 673 transitions. [2018-04-12 15:14:40,116 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 673 transitions. Word has length 1293 [2018-04-12 15:14:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:14:40,117 INFO L459 AbstractCegarLoop]: Abstraction has 616 states and 673 transitions. [2018-04-12 15:14:40,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-04-12 15:14:40,117 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 673 transitions. [2018-04-12 15:14:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1396 [2018-04-12 15:14:40,144 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:14:40,144 INFO L355 BasicCegarLoop]: trace histogram [108, 98, 91, 91, 91, 91, 91, 81, 81, 81, 81, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:14:40,145 INFO L408 AbstractCegarLoop]: === Iteration 37 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:14:40,145 INFO L82 PathProgramCache]: Analyzing trace with hash 719366254, now seen corresponding path program 12 times [2018-04-12 15:14:40,145 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:14:40,145 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:14:40,146 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:40,146 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:14:40,146 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:14:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:14:40,438 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:14:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 49992 backedges. 0 proven. 986 refuted. 0 times theorem prover too weak. 49006 trivial. 0 not checked. [2018-04-12 15:14:41,493 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:14:41,493 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:14:41,498 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-12 15:16:09,362 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2018-04-12 15:16:09,362 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:16:09,398 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:16:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 49992 backedges. 6802 proven. 185 refuted. 0 times theorem prover too weak. 43005 trivial. 0 not checked. [2018-04-12 15:16:10,093 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:16:10,093 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 34 [2018-04-12 15:16:10,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-12 15:16:10,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-12 15:16:10,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2018-04-12 15:16:10,095 INFO L87 Difference]: Start difference. First operand 616 states and 673 transitions. Second operand 34 states. [2018-04-12 15:16:10,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:16:10,808 INFO L93 Difference]: Finished difference Result 1059 states and 1234 transitions. [2018-04-12 15:16:10,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-12 15:16:10,808 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 1395 [2018-04-12 15:16:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:16:10,812 INFO L225 Difference]: With dead ends: 1059 [2018-04-12 15:16:10,812 INFO L226 Difference]: Without dead ends: 1050 [2018-04-12 15:16:10,813 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1382 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=721, Invalid=3185, Unknown=0, NotChecked=0, Total=3906 [2018-04-12 15:16:10,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2018-04-12 15:16:10,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 639. [2018-04-12 15:16:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2018-04-12 15:16:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 709 transitions. [2018-04-12 15:16:10,825 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 709 transitions. Word has length 1395 [2018-04-12 15:16:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:16:10,825 INFO L459 AbstractCegarLoop]: Abstraction has 639 states and 709 transitions. [2018-04-12 15:16:10,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-12 15:16:10,825 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 709 transitions. [2018-04-12 15:16:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1548 [2018-04-12 15:16:10,836 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:16:10,837 INFO L355 BasicCegarLoop]: trace histogram [116, 116, 98, 98, 98, 98, 98, 98, 98, 98, 98, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 16, 16, 16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:16:10,837 INFO L408 AbstractCegarLoop]: === Iteration 38 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:16:10,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1789902741, now seen corresponding path program 13 times [2018-04-12 15:16:10,837 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:16:10,837 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:16:10,838 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:16:10,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:16:10,838 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:16:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:16:10,993 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:16:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 63136 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 62029 trivial. 0 not checked. [2018-04-12 15:16:11,904 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:16:11,904 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:16:11,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:16:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:16:12,254 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:16:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 63136 backedges. 31434 proven. 140 refuted. 0 times theorem prover too weak. 31562 trivial. 0 not checked. [2018-04-12 15:16:13,073 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:16:13,073 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2018-04-12 15:16:13,074 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-12 15:16:13,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-12 15:16:13,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1239, Unknown=0, NotChecked=0, Total=1560 [2018-04-12 15:16:13,074 INFO L87 Difference]: Start difference. First operand 639 states and 709 transitions. Second operand 40 states. [2018-04-12 15:16:13,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:16:13,701 INFO L93 Difference]: Finished difference Result 1589 states and 1880 transitions. [2018-04-12 15:16:13,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-04-12 15:16:13,701 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1547 [2018-04-12 15:16:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:16:13,706 INFO L225 Difference]: With dead ends: 1589 [2018-04-12 15:16:13,706 INFO L226 Difference]: Without dead ends: 1589 [2018-04-12 15:16:13,707 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1594 GetRequests, 1529 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=825, Invalid=3597, Unknown=0, NotChecked=0, Total=4422 [2018-04-12 15:16:13,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2018-04-12 15:16:13,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 708. [2018-04-12 15:16:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2018-04-12 15:16:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 783 transitions. [2018-04-12 15:16:13,720 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 783 transitions. Word has length 1547 [2018-04-12 15:16:13,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:16:13,720 INFO L459 AbstractCegarLoop]: Abstraction has 708 states and 783 transitions. [2018-04-12 15:16:13,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-12 15:16:13,720 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 783 transitions. [2018-04-12 15:16:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2018-04-12 15:16:13,740 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:16:13,740 INFO L355 BasicCegarLoop]: trace histogram [135, 123, 116, 116, 116, 116, 116, 104, 104, 104, 104, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:16:13,741 INFO L408 AbstractCegarLoop]: === Iteration 39 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:16:13,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2068100029, now seen corresponding path program 14 times [2018-04-12 15:16:13,741 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:16:13,741 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:16:13,742 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:16:13,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:16:13,742 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:16:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:16:13,910 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:16:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 79405 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 78170 trivial. 0 not checked. [2018-04-12 15:16:15,062 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:16:15,062 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:16:15,068 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 15:16:15,373 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 15:16:15,373 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:16:15,387 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:16:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 79405 backedges. 33239 proven. 87 refuted. 0 times theorem prover too weak. 46079 trivial. 0 not checked. [2018-04-12 15:16:16,275 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:16:16,276 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 40 [2018-04-12 15:16:16,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-12 15:16:16,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-12 15:16:16,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2018-04-12 15:16:16,277 INFO L87 Difference]: Start difference. First operand 708 states and 783 transitions. Second operand 40 states. [2018-04-12 15:16:17,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:16:17,009 INFO L93 Difference]: Finished difference Result 759 states and 835 transitions. [2018-04-12 15:16:17,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-04-12 15:16:17,009 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1710 [2018-04-12 15:16:17,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:16:17,011 INFO L225 Difference]: With dead ends: 759 [2018-04-12 15:16:17,011 INFO L226 Difference]: Without dead ends: 743 [2018-04-12 15:16:17,011 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1758 GetRequests, 1693 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=3594, Unknown=0, NotChecked=0, Total=4422 [2018-04-12 15:16:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2018-04-12 15:16:17,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 707. [2018-04-12 15:16:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2018-04-12 15:16:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 770 transitions. [2018-04-12 15:16:17,019 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 770 transitions. Word has length 1710 [2018-04-12 15:16:17,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:16:17,020 INFO L459 AbstractCegarLoop]: Abstraction has 707 states and 770 transitions. [2018-04-12 15:16:17,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-12 15:16:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 770 transitions. [2018-04-12 15:16:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1824 [2018-04-12 15:16:17,044 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:16:17,045 INFO L355 BasicCegarLoop]: trace histogram [144, 132, 124, 124, 124, 124, 124, 112, 112, 112, 112, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 18, 18, 18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:16:17,045 INFO L408 AbstractCegarLoop]: === Iteration 40 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:16:17,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1044979833, now seen corresponding path program 15 times [2018-04-12 15:16:17,046 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:16:17,046 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:16:17,046 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:16:17,047 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:16:17,047 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:16:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:16:17,173 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:16:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 90994 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 89624 trivial. 0 not checked. [2018-04-12 15:16:18,405 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:16:18,405 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:16:18,411 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 15:16:20,495 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-04-12 15:16:20,495 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:16:20,509 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:16:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 90994 backedges. 10671 proven. 119 refuted. 0 times theorem prover too weak. 80204 trivial. 0 not checked. [2018-04-12 15:16:21,450 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:16:21,451 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16] total 35 [2018-04-12 15:16:21,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-12 15:16:21,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-12 15:16:21,452 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2018-04-12 15:16:21,452 INFO L87 Difference]: Start difference. First operand 707 states and 770 transitions. Second operand 35 states. [2018-04-12 15:16:21,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:16:21,840 INFO L93 Difference]: Finished difference Result 1325 states and 1559 transitions. [2018-04-12 15:16:21,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-04-12 15:16:21,840 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 1823 [2018-04-12 15:16:21,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:16:21,844 INFO L225 Difference]: With dead ends: 1325 [2018-04-12 15:16:21,845 INFO L226 Difference]: Without dead ends: 1316 [2018-04-12 15:16:21,845 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1855 GetRequests, 1812 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=404, Invalid=1576, Unknown=0, NotChecked=0, Total=1980 [2018-04-12 15:16:21,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2018-04-12 15:16:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 730. [2018-04-12 15:16:21,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2018-04-12 15:16:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 809 transitions. [2018-04-12 15:16:21,855 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 809 transitions. Word has length 1823 [2018-04-12 15:16:21,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:16:21,856 INFO L459 AbstractCegarLoop]: Abstraction has 730 states and 809 transitions. [2018-04-12 15:16:21,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-12 15:16:21,856 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 809 transitions. [2018-04-12 15:16:21,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1997 [2018-04-12 15:16:21,872 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:16:21,872 INFO L355 BasicCegarLoop]: trace histogram [153, 153, 132, 132, 132, 132, 132, 132, 132, 132, 132, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 19, 19, 19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:16:21,872 INFO L408 AbstractCegarLoop]: === Iteration 41 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:16:21,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1767490169, now seen corresponding path program 16 times [2018-04-12 15:16:21,873 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:16:21,873 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:16:21,873 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:16:21,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:16:21,874 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:16:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:16:22,031 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:16:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 111410 backedges. 0 proven. 1512 refuted. 0 times theorem prover too weak. 109898 trivial. 0 not checked. [2018-04-12 15:16:23,223 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:16:23,224 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:16:23,229 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-12 15:16:23,562 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-12 15:16:23,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:16:23,579 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:16:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 111410 backedges. 53084 proven. 184 refuted. 0 times theorem prover too weak. 58142 trivial. 0 not checked. [2018-04-12 15:16:24,708 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:16:24,708 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2018-04-12 15:16:24,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-04-12 15:16:24,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-04-12 15:16:24,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=1571, Unknown=0, NotChecked=0, Total=1980 [2018-04-12 15:16:24,709 INFO L87 Difference]: Start difference. First operand 730 states and 809 transitions. Second operand 45 states. [2018-04-12 15:16:25,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:16:25,250 INFO L93 Difference]: Finished difference Result 1992 states and 2373 transitions. [2018-04-12 15:16:25,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-04-12 15:16:25,250 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 1996 [2018-04-12 15:16:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:16:25,256 INFO L225 Difference]: With dead ends: 1992 [2018-04-12 15:16:25,256 INFO L226 Difference]: Without dead ends: 1992 [2018-04-12 15:16:25,257 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2050 GetRequests, 1976 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1064, Invalid=4636, Unknown=0, NotChecked=0, Total=5700 [2018-04-12 15:16:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2018-04-12 15:16:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 805. [2018-04-12 15:16:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2018-04-12 15:16:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 889 transitions. [2018-04-12 15:16:25,271 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 889 transitions. Word has length 1996 [2018-04-12 15:16:25,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:16:25,271 INFO L459 AbstractCegarLoop]: Abstraction has 805 states and 889 transitions. [2018-04-12 15:16:25,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-04-12 15:16:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 889 transitions. [2018-04-12 15:16:25,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2183 [2018-04-12 15:16:25,290 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:16:25,291 INFO L355 BasicCegarLoop]: trace histogram [175, 161, 153, 153, 153, 153, 153, 139, 139, 139, 139, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:16:25,291 INFO L408 AbstractCegarLoop]: === Iteration 42 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:16:25,291 INFO L82 PathProgramCache]: Analyzing trace with hash 959573400, now seen corresponding path program 17 times [2018-04-12 15:16:25,292 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:16:25,292 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:16:25,292 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:16:25,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:16:25,292 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:16:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:16:25,480 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:16:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 136310 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 134649 trivial. 0 not checked. [2018-04-12 15:16:26,910 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:16:26,910 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:16:26,915 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-12 15:17:31,762 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-04-12 15:17:31,762 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:17:31,804 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:17:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 136310 backedges. 55028 proven. 668 refuted. 0 times theorem prover too weak. 80614 trivial. 0 not checked. [2018-04-12 15:17:33,142 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:17:33,143 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 46 [2018-04-12 15:17:33,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-04-12 15:17:33,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-04-12 15:17:33,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=1670, Unknown=0, NotChecked=0, Total=2070 [2018-04-12 15:17:33,144 INFO L87 Difference]: Start difference. First operand 805 states and 889 transitions. Second operand 46 states. [2018-04-12 15:17:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:17:33,804 INFO L93 Difference]: Finished difference Result 1107 states and 1287 transitions. [2018-04-12 15:17:33,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-04-12 15:17:33,804 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 2182 [2018-04-12 15:17:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:17:33,806 INFO L225 Difference]: With dead ends: 1107 [2018-04-12 15:17:33,806 INFO L226 Difference]: Without dead ends: 1107 [2018-04-12 15:17:33,807 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2224 GetRequests, 2161 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=602, Invalid=3430, Unknown=0, NotChecked=0, Total=4032 [2018-04-12 15:17:33,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2018-04-12 15:17:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 902. [2018-04-12 15:17:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 902 states. [2018-04-12 15:17:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 999 transitions. [2018-04-12 15:17:33,821 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 999 transitions. Word has length 2182 [2018-04-12 15:17:33,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:17:33,822 INFO L459 AbstractCegarLoop]: Abstraction has 902 states and 999 transitions. [2018-04-12 15:17:33,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-04-12 15:17:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 999 transitions. [2018-04-12 15:17:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2307 [2018-04-12 15:17:33,859 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:17:33,860 INFO L355 BasicCegarLoop]: trace histogram [185, 171, 162, 162, 162, 162, 162, 148, 148, 148, 148, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:17:33,860 INFO L408 AbstractCegarLoop]: === Iteration 43 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:17:33,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1034422649, now seen corresponding path program 18 times [2018-04-12 15:17:33,860 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:17:33,860 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:17:33,861 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:17:33,861 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:17:33,861 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:17:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:17:34,124 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:17:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 153183 backedges. 0 proven. 1817 refuted. 0 times theorem prover too weak. 151366 trivial. 0 not checked. [2018-04-12 15:17:35,716 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:17:35,716 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:17:35,721 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-12 15:20:03,967 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-04-12 15:20:03,967 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:20:04,019 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:20:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 153183 backedges. 15678 proven. 156 refuted. 0 times theorem prover too weak. 137349 trivial. 0 not checked. [2018-04-12 15:20:05,425 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:20:05,426 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 16] total 38 [2018-04-12 15:20:05,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-04-12 15:20:05,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-04-12 15:20:05,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1021, Unknown=0, NotChecked=0, Total=1406 [2018-04-12 15:20:05,427 INFO L87 Difference]: Start difference. First operand 902 states and 999 transitions. Second operand 38 states. [2018-04-12 15:20:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:20:05,818 INFO L93 Difference]: Finished difference Result 1697 states and 2022 transitions. [2018-04-12 15:20:05,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-04-12 15:20:05,819 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 2306 [2018-04-12 15:20:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:20:05,823 INFO L225 Difference]: With dead ends: 1697 [2018-04-12 15:20:05,824 INFO L226 Difference]: Without dead ends: 1688 [2018-04-12 15:20:05,824 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2341 GetRequests, 2295 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=497, Invalid=1759, Unknown=0, NotChecked=0, Total=2256 [2018-04-12 15:20:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2018-04-12 15:20:05,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 925. [2018-04-12 15:20:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2018-04-12 15:20:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1043 transitions. [2018-04-12 15:20:05,836 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1043 transitions. Word has length 2306 [2018-04-12 15:20:05,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:20:05,837 INFO L459 AbstractCegarLoop]: Abstraction has 925 states and 1043 transitions. [2018-04-12 15:20:05,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-04-12 15:20:05,837 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1043 transitions. [2018-04-12 15:20:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2501 [2018-04-12 15:20:05,864 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:20:05,864 INFO L355 BasicCegarLoop]: trace histogram [195, 195, 171, 171, 171, 171, 171, 171, 171, 171, 171, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:20:05,864 INFO L408 AbstractCegarLoop]: === Iteration 44 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:20:05,865 INFO L82 PathProgramCache]: Analyzing trace with hash -374456088, now seen corresponding path program 19 times [2018-04-12 15:20:05,865 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:20:05,865 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:20:05,865 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:20:05,866 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:20:05,866 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:20:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:20:06,059 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:20:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 183161 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 181181 trivial. 0 not checked. [2018-04-12 15:20:07,887 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:20:07,887 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:20:07,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:20:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:20:08,357 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:20:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 183161 backedges. 84138 proven. 234 refuted. 0 times theorem prover too weak. 98789 trivial. 0 not checked. [2018-04-12 15:20:10,129 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:20:10,129 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 50 [2018-04-12 15:20:10,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-04-12 15:20:10,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-04-12 15:20:10,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=1942, Unknown=0, NotChecked=0, Total=2450 [2018-04-12 15:20:10,131 INFO L87 Difference]: Start difference. First operand 925 states and 1043 transitions. Second operand 50 states. [2018-04-12 15:20:10,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:20:10,859 INFO L93 Difference]: Finished difference Result 2470 states and 2970 transitions. [2018-04-12 15:20:10,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-04-12 15:20:10,860 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 2500 [2018-04-12 15:20:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:20:10,867 INFO L225 Difference]: With dead ends: 2470 [2018-04-12 15:20:10,867 INFO L226 Difference]: Without dead ends: 2470 [2018-04-12 15:20:10,868 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2561 GetRequests, 2478 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1683 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1334, Invalid=5806, Unknown=0, NotChecked=0, Total=7140 [2018-04-12 15:20:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2018-04-12 15:20:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 1006. [2018-04-12 15:20:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2018-04-12 15:20:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1129 transitions. [2018-04-12 15:20:10,893 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1129 transitions. Word has length 2500 [2018-04-12 15:20:10,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:20:10,894 INFO L459 AbstractCegarLoop]: Abstraction has 1006 states and 1129 transitions. [2018-04-12 15:20:10,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-04-12 15:20:10,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1129 transitions. [2018-04-12 15:20:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2710 [2018-04-12 15:20:10,924 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:20:10,925 INFO L355 BasicCegarLoop]: trace histogram [220, 204, 195, 195, 195, 195, 195, 179, 179, 179, 179, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 23, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:20:10,925 INFO L408 AbstractCegarLoop]: === Iteration 45 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:20:10,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1852740710, now seen corresponding path program 20 times [2018-04-12 15:20:10,925 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:20:10,925 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:20:10,925 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:20:10,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:20:10,926 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:20:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:20:11,213 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:20:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 219303 backedges. 0 proven. 2150 refuted. 0 times theorem prover too weak. 217153 trivial. 0 not checked. [2018-04-12 15:20:13,386 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:20:13,386 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:20:13,392 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 15:20:13,879 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 15:20:13,880 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:20:13,903 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:20:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 219303 backedges. 86509 proven. 156 refuted. 0 times theorem prover too weak. 132638 trivial. 0 not checked. [2018-04-12 15:20:15,878 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:20:15,878 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24] total 50 [2018-04-12 15:20:15,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-04-12 15:20:15,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-04-12 15:20:15,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=1946, Unknown=0, NotChecked=0, Total=2450 [2018-04-12 15:20:15,880 INFO L87 Difference]: Start difference. First operand 1006 states and 1129 transitions. Second operand 50 states. [2018-04-12 15:20:16,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:20:16,624 INFO L93 Difference]: Finished difference Result 1063 states and 1193 transitions. [2018-04-12 15:20:16,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-04-12 15:20:16,625 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 2709 [2018-04-12 15:20:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:20:16,627 INFO L225 Difference]: With dead ends: 1063 [2018-04-12 15:20:16,627 INFO L226 Difference]: Without dead ends: 1047 [2018-04-12 15:20:16,628 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2771 GetRequests, 2688 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1341, Invalid=5799, Unknown=0, NotChecked=0, Total=7140 [2018-04-12 15:20:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2018-04-12 15:20:16,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1005. [2018-04-12 15:20:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2018-04-12 15:20:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1112 transitions. [2018-04-12 15:20:16,636 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1112 transitions. Word has length 2709 [2018-04-12 15:20:16,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:20:16,636 INFO L459 AbstractCegarLoop]: Abstraction has 1005 states and 1112 transitions. [2018-04-12 15:20:16,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-04-12 15:20:16,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1112 transitions. [2018-04-12 15:20:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2845 [2018-04-12 15:20:16,668 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:20:16,668 INFO L355 BasicCegarLoop]: trace histogram [231, 215, 205, 205, 205, 205, 205, 189, 189, 189, 189, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 24, 24, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:20:16,668 INFO L408 AbstractCegarLoop]: === Iteration 46 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:20:16,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1182888694, now seen corresponding path program 21 times [2018-04-12 15:20:16,669 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:20:16,669 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:20:16,669 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:20:16,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:20:16,670 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:20:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:20:16,996 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:20:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 242859 backedges. 0 proven. 2327 refuted. 0 times theorem prover too weak. 240532 trivial. 0 not checked. [2018-04-12 15:20:19,328 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:20:19,328 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:20:19,349 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 15:20:26,034 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-04-12 15:20:26,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:20:26,056 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:20:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 242859 backedges. 22104 proven. 198 refuted. 0 times theorem prover too weak. 220557 trivial. 0 not checked. [2018-04-12 15:20:28,065 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:20:28,065 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 19] total 44 [2018-04-12 15:20:28,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-04-12 15:20:28,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-04-12 15:20:28,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2018-04-12 15:20:28,067 INFO L87 Difference]: Start difference. First operand 1005 states and 1112 transitions. Second operand 44 states. [2018-04-12 15:20:28,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:20:28,776 INFO L93 Difference]: Finished difference Result 2031 states and 2439 transitions. [2018-04-12 15:20:28,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-04-12 15:20:28,776 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 2844 [2018-04-12 15:20:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:20:28,783 INFO L225 Difference]: With dead ends: 2031 [2018-04-12 15:20:28,783 INFO L226 Difference]: Without dead ends: 2022 [2018-04-12 15:20:28,783 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2885 GetRequests, 2830 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=632, Invalid=2560, Unknown=0, NotChecked=0, Total=3192 [2018-04-12 15:20:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2018-04-12 15:20:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1028. [2018-04-12 15:20:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2018-04-12 15:20:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1159 transitions. [2018-04-12 15:20:28,801 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1159 transitions. Word has length 2844 [2018-04-12 15:20:28,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:20:28,802 INFO L459 AbstractCegarLoop]: Abstraction has 1028 states and 1159 transitions. [2018-04-12 15:20:28,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-04-12 15:20:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1159 transitions. [2018-04-12 15:20:28,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3060 [2018-04-12 15:20:28,865 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:20:28,866 INFO L355 BasicCegarLoop]: trace histogram [242, 242, 215, 215, 215, 215, 215, 215, 215, 215, 215, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 25, 25, 25, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:20:28,866 INFO L408 AbstractCegarLoop]: === Iteration 47 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:20:28,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1235927434, now seen corresponding path program 22 times [2018-04-12 15:20:28,867 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:20:28,867 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:20:28,868 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:20:28,868 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:20:28,868 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:20:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:20:29,251 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:20:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 285004 backedges. 0 proven. 2511 refuted. 0 times theorem prover too weak. 282493 trivial. 0 not checked. [2018-04-12 15:20:31,909 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:20:31,909 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:20:31,914 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-12 15:20:32,454 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-12 15:20:32,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:20:32,484 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:20:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 285004 backedges. 126963 proven. 290 refuted. 0 times theorem prover too weak. 157751 trivial. 0 not checked. [2018-04-12 15:20:35,002 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:20:35,003 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27] total 55 [2018-04-12 15:20:35,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-04-12 15:20:35,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-04-12 15:20:35,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=618, Invalid=2352, Unknown=0, NotChecked=0, Total=2970 [2018-04-12 15:20:35,004 INFO L87 Difference]: Start difference. First operand 1028 states and 1159 transitions. Second operand 55 states. [2018-04-12 15:20:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:20:35,952 INFO L93 Difference]: Finished difference Result 2971 states and 3596 transitions. [2018-04-12 15:20:35,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-04-12 15:20:35,952 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 3059 [2018-04-12 15:20:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:20:35,962 INFO L225 Difference]: With dead ends: 2971 [2018-04-12 15:20:35,962 INFO L226 Difference]: Without dead ends: 2971 [2018-04-12 15:20:35,963 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3127 GetRequests, 3035 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1635, Invalid=7107, Unknown=0, NotChecked=0, Total=8742 [2018-04-12 15:20:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2018-04-12 15:20:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1115. [2018-04-12 15:20:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2018-04-12 15:20:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1251 transitions. [2018-04-12 15:20:35,986 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1251 transitions. Word has length 3059 [2018-04-12 15:20:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:20:35,987 INFO L459 AbstractCegarLoop]: Abstraction has 1115 states and 1251 transitions. [2018-04-12 15:20:35,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-04-12 15:20:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1251 transitions. [2018-04-12 15:20:36,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3292 [2018-04-12 15:20:36,027 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:20:36,027 INFO L355 BasicCegarLoop]: trace histogram [270, 252, 242, 242, 242, 242, 242, 224, 224, 224, 224, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 26, 26, 26, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:20:36,027 INFO L408 AbstractCegarLoop]: === Iteration 48 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:20:36,028 INFO L82 PathProgramCache]: Analyzing trace with hash 573784265, now seen corresponding path program 23 times [2018-04-12 15:20:36,028 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:20:36,028 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:20:36,028 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:20:36,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:20:36,029 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:20:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:20:36,487 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:20:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 335344 backedges. 0 proven. 2702 refuted. 0 times theorem prover too weak. 332642 trivial. 0 not checked. [2018-04-12 15:20:39,527 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:20:39,527 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:20:39,532 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-12 15:22:10,626 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2018-04-12 15:22:10,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:22:10,675 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:22:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 335344 backedges. 129324 proven. 254 refuted. 0 times theorem prover too weak. 205766 trivial. 0 not checked. [2018-04-12 15:22:13,350 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:22:13,351 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24] total 53 [2018-04-12 15:22:13,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-04-12 15:22:13,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-04-12 15:22:13,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=2157, Unknown=0, NotChecked=0, Total=2756 [2018-04-12 15:22:13,352 INFO L87 Difference]: Start difference. First operand 1115 states and 1251 transitions. Second operand 53 states. [2018-04-12 15:22:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:22:14,408 INFO L93 Difference]: Finished difference Result 1576 states and 1882 transitions. [2018-04-12 15:22:14,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-04-12 15:22:14,409 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 3291 [2018-04-12 15:22:14,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:22:14,414 INFO L225 Difference]: With dead ends: 1576 [2018-04-12 15:22:14,414 INFO L226 Difference]: Without dead ends: 1576 [2018-04-12 15:22:14,415 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3332 GetRequests, 3270 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=742, Invalid=3290, Unknown=0, NotChecked=0, Total=4032 [2018-04-12 15:22:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2018-04-12 15:22:14,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1238. [2018-04-12 15:22:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2018-04-12 15:22:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1393 transitions. [2018-04-12 15:22:14,432 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1393 transitions. Word has length 3291 [2018-04-12 15:22:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:22:14,432 INFO L459 AbstractCegarLoop]: Abstraction has 1238 states and 1393 transitions. [2018-04-12 15:22:14,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-04-12 15:22:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1393 transitions. [2018-04-12 15:22:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3438 [2018-04-12 15:22:14,475 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:22:14,476 INFO L355 BasicCegarLoop]: trace histogram [282, 264, 253, 253, 253, 253, 253, 235, 235, 235, 235, 30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 27, 27, 27, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:22:14,476 INFO L408 AbstractCegarLoop]: === Iteration 49 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:22:14,477 INFO L82 PathProgramCache]: Analyzing trace with hash 430872374, now seen corresponding path program 24 times [2018-04-12 15:22:14,477 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:22:14,477 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:22:14,477 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:22:14,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:22:14,477 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:22:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:22:14,930 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:22:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 367147 backedges. 0 proven. 2900 refuted. 0 times theorem prover too weak. 364247 trivial. 0 not checked. [2018-04-12 15:22:18,245 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:22:18,245 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:22:18,251 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-12 15:24:24,302 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2018-04-12 15:24:24,302 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:24:24,352 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:24:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 367147 backedges. 29838 proven. 415 refuted. 0 times theorem prover too weak. 336894 trivial. 0 not checked. [2018-04-12 15:24:27,394 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:24:27,395 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 21] total 49 [2018-04-12 15:24:27,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-04-12 15:24:27,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-04-12 15:24:27,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=588, Invalid=1764, Unknown=0, NotChecked=0, Total=2352 [2018-04-12 15:24:27,396 INFO L87 Difference]: Start difference. First operand 1238 states and 1393 transitions. Second operand 49 states. [2018-04-12 15:24:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:24:28,416 INFO L93 Difference]: Finished difference Result 2497 states and 3028 transitions. [2018-04-12 15:24:28,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-04-12 15:24:28,416 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 3437 [2018-04-12 15:24:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:24:28,424 INFO L225 Difference]: With dead ends: 2497 [2018-04-12 15:24:28,425 INFO L226 Difference]: Without dead ends: 2488 [2018-04-12 15:24:28,425 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3512 GetRequests, 3421 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1750, Invalid=6806, Unknown=0, NotChecked=0, Total=8556 [2018-04-12 15:24:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2018-04-12 15:24:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 1261. [2018-04-12 15:24:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2018-04-12 15:24:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1447 transitions. [2018-04-12 15:24:28,453 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1447 transitions. Word has length 3437 [2018-04-12 15:24:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:24:28,453 INFO L459 AbstractCegarLoop]: Abstraction has 1261 states and 1447 transitions. [2018-04-12 15:24:28,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-04-12 15:24:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1447 transitions. [2018-04-12 15:24:28,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3674 [2018-04-12 15:24:28,502 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:24:28,503 INFO L355 BasicCegarLoop]: trace histogram [294, 294, 264, 264, 264, 264, 264, 264, 264, 264, 264, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 28, 28, 28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:24:28,503 INFO L408 AbstractCegarLoop]: === Iteration 50 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:24:28,504 INFO L82 PathProgramCache]: Analyzing trace with hash 578225101, now seen corresponding path program 25 times [2018-04-12 15:24:28,504 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:24:28,504 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:24:28,504 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:24:28,504 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:24:28,504 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:24:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:24:29,007 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:24:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 424379 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 421274 trivial. 0 not checked. [2018-04-12 15:24:32,722 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:24:32,722 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:24:32,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:24:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:24:33,378 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:24:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 424379 backedges. 184190 proven. 352 refuted. 0 times theorem prover too weak. 239837 trivial. 0 not checked. [2018-04-12 15:24:36,748 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:24:36,749 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 29] total 60 [2018-04-12 15:24:36,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-12 15:24:36,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-12 15:24:36,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=739, Invalid=2801, Unknown=0, NotChecked=0, Total=3540 [2018-04-12 15:24:36,750 INFO L87 Difference]: Start difference. First operand 1261 states and 1447 transitions. Second operand 60 states. [2018-04-12 15:24:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:24:37,778 INFO L93 Difference]: Finished difference Result 3547 states and 4326 transitions. [2018-04-12 15:24:37,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-04-12 15:24:37,778 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 3673 [2018-04-12 15:24:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:24:37,790 INFO L225 Difference]: With dead ends: 3547 [2018-04-12 15:24:37,790 INFO L226 Difference]: Without dead ends: 3547 [2018-04-12 15:24:37,791 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 3748 GetRequests, 3647 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1967, Invalid=8539, Unknown=0, NotChecked=0, Total=10506 [2018-04-12 15:24:37,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2018-04-12 15:24:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 1354. [2018-04-12 15:24:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1354 states. [2018-04-12 15:24:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1545 transitions. [2018-04-12 15:24:37,832 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1545 transitions. Word has length 3673 [2018-04-12 15:24:37,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:24:37,833 INFO L459 AbstractCegarLoop]: Abstraction has 1354 states and 1545 transitions. [2018-04-12 15:24:37,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-12 15:24:37,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1545 transitions. [2018-04-12 15:24:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3929 [2018-04-12 15:24:37,929 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:24:37,930 INFO L355 BasicCegarLoop]: trace histogram [325, 305, 294, 294, 294, 294, 294, 274, 274, 274, 274, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 29, 29, 29, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:24:37,930 INFO L408 AbstractCegarLoop]: === Iteration 51 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:24:37,931 INFO L82 PathProgramCache]: Analyzing trace with hash 768354941, now seen corresponding path program 26 times [2018-04-12 15:24:37,931 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:24:37,931 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:24:37,932 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:24:37,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 15:24:37,932 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:24:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:24:38,489 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:24:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 492218 backedges. 0 proven. 3317 refuted. 0 times theorem prover too weak. 488901 trivial. 0 not checked. [2018-04-12 15:24:42,690 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:24:42,690 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:24:42,695 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 15:24:43,415 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 15:24:43,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:24:43,449 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:24:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 492218 backedges. 186947 proven. 245 refuted. 0 times theorem prover too weak. 305026 trivial. 0 not checked. [2018-04-12 15:24:47,191 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:24:47,192 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28] total 60 [2018-04-12 15:24:47,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-12 15:24:47,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-12 15:24:47,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=735, Invalid=2805, Unknown=0, NotChecked=0, Total=3540 [2018-04-12 15:24:47,193 INFO L87 Difference]: Start difference. First operand 1354 states and 1545 transitions. Second operand 60 states. [2018-04-12 15:24:48,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:24:48,277 INFO L93 Difference]: Finished difference Result 1417 states and 1625 transitions. [2018-04-12 15:24:48,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-04-12 15:24:48,278 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 3928 [2018-04-12 15:24:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:24:48,281 INFO L225 Difference]: With dead ends: 1417 [2018-04-12 15:24:48,281 INFO L226 Difference]: Without dead ends: 1401 [2018-04-12 15:24:48,282 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4004 GetRequests, 3903 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2084 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1978, Invalid=8528, Unknown=0, NotChecked=0, Total=10506 [2018-04-12 15:24:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2018-04-12 15:24:48,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1353. [2018-04-12 15:24:48,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1353 states. [2018-04-12 15:24:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1524 transitions. [2018-04-12 15:24:48,301 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1524 transitions. Word has length 3928 [2018-04-12 15:24:48,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:24:48,302 INFO L459 AbstractCegarLoop]: Abstraction has 1353 states and 1524 transitions. [2018-04-12 15:24:48,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-12 15:24:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1524 transitions. [2018-04-12 15:24:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4086 [2018-04-12 15:24:48,372 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:24:48,373 INFO L355 BasicCegarLoop]: trace histogram [338, 318, 306, 306, 306, 306, 306, 286, 286, 286, 286, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 30, 30, 30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:24:48,373 INFO L408 AbstractCegarLoop]: === Iteration 52 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:24:48,373 INFO L82 PathProgramCache]: Analyzing trace with hash 182619679, now seen corresponding path program 27 times [2018-04-12 15:24:48,373 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:24:48,373 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:24:48,374 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:24:48,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:24:48,374 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:24:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:24:48,826 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:24:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 533997 backedges. 0 proven. 3536 refuted. 0 times theorem prover too weak. 530461 trivial. 0 not checked. [2018-04-12 15:24:53,315 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:24:53,315 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:24:53,321 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 15:25:07,030 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2018-04-12 15:25:07,030 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:25:07,066 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:25:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 533997 backedges. 39605 proven. 297 refuted. 0 times theorem prover too weak. 494095 trivial. 0 not checked. [2018-04-12 15:25:10,931 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:25:10,932 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 21] total 52 [2018-04-12 15:25:10,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-04-12 15:25:10,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-04-12 15:25:10,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=698, Invalid=1954, Unknown=0, NotChecked=0, Total=2652 [2018-04-12 15:25:10,934 INFO L87 Difference]: Start difference. First operand 1353 states and 1524 transitions. Second operand 52 states. [2018-04-12 15:25:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:25:11,735 INFO L93 Difference]: Finished difference Result 2899 states and 3539 transitions. [2018-04-12 15:25:11,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-04-12 15:25:11,735 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 4085 [2018-04-12 15:25:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:25:11,744 INFO L225 Difference]: With dead ends: 2899 [2018-04-12 15:25:11,744 INFO L226 Difference]: Without dead ends: 2890 [2018-04-12 15:25:11,745 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4134 GetRequests, 4069 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=896, Invalid=3526, Unknown=0, NotChecked=0, Total=4422 [2018-04-12 15:25:11,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2018-04-12 15:25:11,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1376. [2018-04-12 15:25:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2018-04-12 15:25:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1581 transitions. [2018-04-12 15:25:11,781 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1581 transitions. Word has length 4085 [2018-04-12 15:25:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:25:11,782 INFO L459 AbstractCegarLoop]: Abstraction has 1376 states and 1581 transitions. [2018-04-12 15:25:11,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-04-12 15:25:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1581 transitions. [2018-04-12 15:25:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4343 [2018-04-12 15:25:11,853 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:25:11,854 INFO L355 BasicCegarLoop]: trace histogram [351, 351, 318, 318, 318, 318, 318, 318, 318, 318, 318, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 31, 31, 31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:25:11,854 INFO L408 AbstractCegarLoop]: === Iteration 53 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:25:11,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1789577215, now seen corresponding path program 28 times [2018-04-12 15:25:11,855 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:25:11,855 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:25:11,856 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:25:11,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:25:11,856 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:25:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:25:12,571 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:25:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 609551 backedges. 0 proven. 3762 refuted. 0 times theorem prover too weak. 605789 trivial. 0 not checked. [2018-04-12 15:25:17,670 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:25:17,670 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:25:17,676 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-12 15:25:18,460 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-12 15:25:18,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 15:25:18,499 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 15:25:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 609551 backedges. 258714 proven. 420 refuted. 0 times theorem prover too weak. 350417 trivial. 0 not checked. [2018-04-12 15:25:23,062 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 15:25:23,080 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 31] total 65 [2018-04-12 15:25:23,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-04-12 15:25:23,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-04-12 15:25:23,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=871, Invalid=3289, Unknown=0, NotChecked=0, Total=4160 [2018-04-12 15:25:23,081 INFO L87 Difference]: Start difference. First operand 1376 states and 1581 transitions. Second operand 65 states. [2018-04-12 15:25:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 15:25:24,042 INFO L93 Difference]: Finished difference Result 4146 states and 5089 transitions. [2018-04-12 15:25:24,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-04-12 15:25:24,042 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 4342 [2018-04-12 15:25:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 15:25:24,057 INFO L225 Difference]: With dead ends: 4146 [2018-04-12 15:25:24,057 INFO L226 Difference]: Without dead ends: 4146 [2018-04-12 15:25:24,058 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4424 GetRequests, 4314 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2949 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2330, Invalid=10102, Unknown=0, NotChecked=0, Total=12432 [2018-04-12 15:25:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2018-04-12 15:25:24,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 1475. [2018-04-12 15:25:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1475 states. [2018-04-12 15:25:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 1685 transitions. [2018-04-12 15:25:24,094 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 1685 transitions. Word has length 4342 [2018-04-12 15:25:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 15:25:24,094 INFO L459 AbstractCegarLoop]: Abstraction has 1475 states and 1685 transitions. [2018-04-12 15:25:24,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-04-12 15:25:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 1685 transitions. [2018-04-12 15:25:24,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4621 [2018-04-12 15:25:24,191 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 15:25:24,192 INFO L355 BasicCegarLoop]: trace histogram [385, 363, 351, 351, 351, 351, 351, 329, 329, 329, 329, 35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 32, 32, 32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 15:25:24,192 INFO L408 AbstractCegarLoop]: === Iteration 54 === [__U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__fooErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-12 15:25:24,193 INFO L82 PathProgramCache]: Analyzing trace with hash -34707064, now seen corresponding path program 29 times [2018-04-12 15:25:24,193 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 15:25:24,193 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 15:25:24,194 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:25:24,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 15:25:24,194 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 15:25:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 15:25:24,742 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 15:25:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 698535 backedges. 0 proven. 3995 refuted. 0 times theorem prover too weak. 694540 trivial. 0 not checked. [2018-04-12 15:25:30,423 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 15:25:30,423 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 15:25:30,432 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown