java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-10 13:52:25,714 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-10 13:52:25,716 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-10 13:52:25,728 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-10 13:52:25,728 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-10 13:52:25,729 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-10 13:52:25,730 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-10 13:52:25,732 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-10 13:52:25,733 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-10 13:52:25,734 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-10 13:52:25,735 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-10 13:52:25,735 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-10 13:52:25,736 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-10 13:52:25,737 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-10 13:52:25,738 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-10 13:52:25,740 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-10 13:52:25,741 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-10 13:52:25,743 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-10 13:52:25,744 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-10 13:52:25,745 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-10 13:52:25,746 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-10 13:52:25,747 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-10 13:52:25,747 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-10 13:52:25,748 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-10 13:52:25,748 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-10 13:52:25,749 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-10 13:52:25,749 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-10 13:52:25,750 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-10 13:52:25,751 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-10 13:52:25,751 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-10 13:52:25,752 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-10 13:52:25,752 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 [2018-04-10 13:52:25,764 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-10 13:52:25,764 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-10 13:52:25,765 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-10 13:52:25,766 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-10 13:52:25,766 INFO L133 SettingsManager]: * Use SBE=true [2018-04-10 13:52:25,766 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-10 13:52:25,766 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-10 13:52:25,766 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-10 13:52:25,767 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-10 13:52:25,767 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-10 13:52:25,767 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-10 13:52:25,767 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-10 13:52:25,767 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-10 13:52:25,767 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-10 13:52:25,767 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-10 13:52:25,768 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-10 13:52:25,768 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-10 13:52:25,768 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-10 13:52:25,768 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-10 13:52:25,768 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-10 13:52:25,768 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-10 13:52:25,768 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-10 13:52:25,769 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-10 13:52:25,769 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-04-10 13:52:25,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-10 13:52:25,812 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-10 13:52:25,817 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-10 13:52:25,819 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-10 13:52:25,820 INFO L276 PluginConnector]: CDTParser initialized [2018-04-10 13:52:25,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-10 13:52:26,103 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG100a27909 [2018-04-10 13:52:26,205 INFO L287 CDTParser]: IsIndexed: true [2018-04-10 13:52:26,205 INFO L288 CDTParser]: Found 1 translation units. [2018-04-10 13:52:26,205 INFO L168 CDTParser]: Scanning ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-10 13:52:26,206 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-10 13:52:26,206 INFO L215 ultiparseSymbolTable]: [2018-04-10 13:52:26,206 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-10 13:52:26,206 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo ('foo') in ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-10 13:52:26,207 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-10 13:52:26,207 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__bar ('bar') in ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-10 13:52:26,207 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-10 13:52:26,207 INFO L233 ultiparseSymbolTable]: [2018-04-10 13:52:26,218 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG100a27909 [2018-04-10 13:52:26,221 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-10 13:52:26,222 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-10 13:52:26,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-10 13:52:26,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-10 13:52:26,229 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-10 13:52:26,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 01:52:26" (1/1) ... [2018-04-10 13:52:26,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6616d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26, skipping insertion in model container [2018-04-10 13:52:26,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 01:52:26" (1/1) ... [2018-04-10 13:52:26,244 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 13:52:26,252 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 13:52:26,366 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 13:52:26,389 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 13:52:26,393 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 10 non ball SCCs. Number of states in SCCs 10. [2018-04-10 13:52:26,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26 WrapperNode [2018-04-10 13:52:26,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-10 13:52:26,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-10 13:52:26,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-10 13:52:26,401 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-10 13:52:26,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26" (1/1) ... [2018-04-10 13:52:26,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26" (1/1) ... [2018-04-10 13:52:26,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26" (1/1) ... [2018-04-10 13:52:26,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26" (1/1) ... [2018-04-10 13:52:26,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26" (1/1) ... [2018-04-10 13:52:26,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26" (1/1) ... [2018-04-10 13:52:26,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26" (1/1) ... [2018-04-10 13:52:26,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-10 13:52:26,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-10 13:52:26,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-10 13:52:26,428 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-10 13:52:26,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26" (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 [2018-04-10 13:52:26,467 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-10 13:52:26,467 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-10 13:52:26,467 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__bar [2018-04-10 13:52:26,467 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo [2018-04-10 13:52:26,467 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-10 13:52:26,467 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__bar [2018-04-10 13:52:26,468 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-10 13:52:26,468 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo [2018-04-10 13:52:26,468 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-10 13:52:26,468 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-10 13:52:26,468 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-10 13:52:26,468 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-10 13:52:26,468 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-10 13:52:26,468 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-10 13:52:26,468 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-10 13:52:26,723 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-10 13:52:26,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 01:52:26 BoogieIcfgContainer [2018-04-10 13:52:26,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-10 13:52:26,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-10 13:52:26,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-10 13:52:26,726 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-10 13:52:26,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.04 01:52:26" (1/3) ... [2018-04-10 13:52:26,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2edc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 01:52:26, skipping insertion in model container [2018-04-10 13:52:26,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 01:52:26" (2/3) ... [2018-04-10 13:52:26,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2edc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 01:52:26, skipping insertion in model container [2018-04-10 13:52:26,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 01:52:26" (3/3) ... [2018-04-10 13:52:26,729 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-10 13:52:26,737 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-10 13:52:26,741 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-04-10 13:52:26,770 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-10 13:52:26,770 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-10 13:52:26,770 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-10 13:52:26,770 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-10 13:52:26,771 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-10 13:52:26,771 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-10 13:52:26,771 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-10 13:52:26,771 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-10 13:52:26,771 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-10 13:52:26,772 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-10 13:52:26,784 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2018-04-10 13:52:26,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-10 13:52:26,791 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:26,792 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 13:52:26,792 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]=== [2018-04-10 13:52:26,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1613294992, now seen corresponding path program 1 times [2018-04-10 13:52:26,796 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:26,796 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:26,825 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:26,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:26,826 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:26,853 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:26,873 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:26,874 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-04-10 13:52:26,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-04-10 13:52:26,885 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-04-10 13:52:26,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-10 13:52:26,887 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2018-04-10 13:52:26,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:26,901 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2018-04-10 13:52:26,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-04-10 13:52:26,902 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-04-10 13:52:26,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:26,908 INFO L225 Difference]: With dead ends: 68 [2018-04-10 13:52:26,908 INFO L226 Difference]: Without dead ends: 65 [2018-04-10 13:52:26,909 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 [2018-04-10 13:52:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-04-10 13:52:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-04-10 13:52:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-04-10 13:52:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-04-10 13:52:26,931 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 13 [2018-04-10 13:52:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:26,932 INFO L459 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-04-10 13:52:26,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-04-10 13:52:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-04-10 13:52:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-04-10 13:52:26,932 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:26,932 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 13:52:26,932 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]=== [2018-04-10 13:52:26,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1969953325, now seen corresponding path program 1 times [2018-04-10 13:52:26,932 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:26,933 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:26,933 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:26,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:26,933 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:26,945 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:26,968 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:26,968 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-10 13:52:26,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-10 13:52:26,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-10 13:52:26,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-10 13:52:26,970 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 3 states. [2018-04-10 13:52:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:27,032 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2018-04-10 13:52:27,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-10 13:52:27,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-04-10 13:52:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:27,035 INFO L225 Difference]: With dead ends: 71 [2018-04-10 13:52:27,035 INFO L226 Difference]: Without dead ends: 71 [2018-04-10 13:52:27,035 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 [2018-04-10 13:52:27,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-04-10 13:52:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2018-04-10 13:52:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-04-10 13:52:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-04-10 13:52:27,044 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 14 [2018-04-10 13:52:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:27,044 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-04-10 13:52:27,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-10 13:52:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-04-10 13:52:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-04-10 13:52:27,045 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:27,045 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 13:52:27,045 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]=== [2018-04-10 13:52:27,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1297061679, now seen corresponding path program 1 times [2018-04-10 13:52:27,045 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:27,045 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:27,046 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:27,046 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:27,060 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:27,115 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:27,115 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-04-10 13:52:27,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-10 13:52:27,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-10 13:52:27,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-04-10 13:52:27,116 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 6 states. [2018-04-10 13:52:27,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:27,188 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2018-04-10 13:52:27,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-10 13:52:27,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-04-10 13:52:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:27,189 INFO L225 Difference]: With dead ends: 85 [2018-04-10 13:52:27,189 INFO L226 Difference]: Without dead ends: 85 [2018-04-10 13:52:27,190 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 [2018-04-10 13:52:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-04-10 13:52:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2018-04-10 13:52:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-04-10 13:52:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2018-04-10 13:52:27,196 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 17 [2018-04-10 13:52:27,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:27,196 INFO L459 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2018-04-10 13:52:27,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-10 13:52:27,197 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2018-04-10 13:52:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-10 13:52:27,197 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:27,197 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] [2018-04-10 13:52:27,197 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]=== [2018-04-10 13:52:27,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184185, now seen corresponding path program 1 times [2018-04-10 13:52:27,198 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:27,198 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:27,199 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:27,199 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:27,211 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:27,247 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:27,247 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-10 13:52:27,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-10 13:52:27,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-10 13:52:27,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-10 13:52:27,248 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 5 states. [2018-04-10 13:52:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:27,311 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-04-10 13:52:27,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-10 13:52:27,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-04-10 13:52:27,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:27,313 INFO L225 Difference]: With dead ends: 77 [2018-04-10 13:52:27,313 INFO L226 Difference]: Without dead ends: 77 [2018-04-10 13:52:27,313 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 [2018-04-10 13:52:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-10 13:52:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-04-10 13:52:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-10 13:52:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-04-10 13:52:27,317 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 21 [2018-04-10 13:52:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:27,317 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-04-10 13:52:27,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-10 13:52:27,317 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-04-10 13:52:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-10 13:52:27,317 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:27,317 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] [2018-04-10 13:52:27,317 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]=== [2018-04-10 13:52:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184184, now seen corresponding path program 1 times [2018-04-10 13:52:27,318 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:27,318 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:27,318 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:27,318 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:27,327 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:27,390 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:27,390 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-10 13:52:27,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-10 13:52:27,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-10 13:52:27,391 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-04-10 13:52:27,391 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2018-04-10 13:52:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:27,512 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2018-04-10 13:52:27,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-10 13:52:27,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-04-10 13:52:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:27,513 INFO L225 Difference]: With dead ends: 89 [2018-04-10 13:52:27,514 INFO L226 Difference]: Without dead ends: 89 [2018-04-10 13:52:27,514 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 [2018-04-10 13:52:27,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-04-10 13:52:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2018-04-10 13:52:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-04-10 13:52:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2018-04-10 13:52:27,520 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 21 [2018-04-10 13:52:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:27,520 INFO L459 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2018-04-10 13:52:27,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-10 13:52:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2018-04-10 13:52:27,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-10 13:52:27,521 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:27,521 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] [2018-04-10 13:52:27,521 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]=== [2018-04-10 13:52:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1759981910, now seen corresponding path program 1 times [2018-04-10 13:52:27,522 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:27,522 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:27,523 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:27,523 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:27,534 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:27,563 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:27,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-10 13:52:27,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-10 13:52:27,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-10 13:52:27,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-10 13:52:27,564 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 5 states. [2018-04-10 13:52:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:27,610 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2018-04-10 13:52:27,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-10 13:52:27,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-04-10 13:52:27,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:27,611 INFO L225 Difference]: With dead ends: 91 [2018-04-10 13:52:27,611 INFO L226 Difference]: Without dead ends: 91 [2018-04-10 13:52:27,611 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 [2018-04-10 13:52:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-04-10 13:52:27,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2018-04-10 13:52:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-04-10 13:52:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2018-04-10 13:52:27,617 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 31 [2018-04-10 13:52:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:27,618 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2018-04-10 13:52:27,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-10 13:52:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2018-04-10 13:52:27,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-10 13:52:27,619 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:27,619 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] [2018-04-10 13:52:27,619 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]=== [2018-04-10 13:52:27,619 INFO L82 PathProgramCache]: Analyzing trace with hash 216183673, now seen corresponding path program 1 times [2018-04-10 13:52:27,619 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:27,619 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:27,620 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:27,620 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:27,632 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:27,691 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:27,691 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-10 13:52:27,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-10 13:52:27,692 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-10 13:52:27,692 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-10 13:52:27,692 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 5 states. [2018-04-10 13:52:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:27,788 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2018-04-10 13:52:27,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-10 13:52:27,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-04-10 13:52:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:27,790 INFO L225 Difference]: With dead ends: 86 [2018-04-10 13:52:27,790 INFO L226 Difference]: Without dead ends: 86 [2018-04-10 13:52:27,790 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 [2018-04-10 13:52:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-04-10 13:52:27,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-04-10 13:52:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-10 13:52:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2018-04-10 13:52:27,796 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 31 [2018-04-10 13:52:27,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:27,796 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2018-04-10 13:52:27,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-10 13:52:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2018-04-10 13:52:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-10 13:52:27,797 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:27,797 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] [2018-04-10 13:52:27,798 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]=== [2018-04-10 13:52:27,798 INFO L82 PathProgramCache]: Analyzing trace with hash 216183674, now seen corresponding path program 1 times [2018-04-10 13:52:27,798 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:27,798 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:27,799 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:27,799 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:27,811 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:27,930 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:27,930 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-10 13:52:27,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-10 13:52:27,931 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-10 13:52:27,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-04-10 13:52:27,931 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 8 states. [2018-04-10 13:52:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:28,114 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2018-04-10 13:52:28,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-10 13:52:28,114 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-04-10 13:52:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:28,115 INFO L225 Difference]: With dead ends: 101 [2018-04-10 13:52:28,115 INFO L226 Difference]: Without dead ends: 101 [2018-04-10 13:52:28,115 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 [2018-04-10 13:52:28,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-04-10 13:52:28,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2018-04-10 13:52:28,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-04-10 13:52:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2018-04-10 13:52:28,120 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 31 [2018-04-10 13:52:28,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:28,120 INFO L459 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2018-04-10 13:52:28,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-10 13:52:28,120 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2018-04-10 13:52:28,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-04-10 13:52:28,121 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:28,121 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] [2018-04-10 13:52:28,121 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]=== [2018-04-10 13:52:28,121 INFO L82 PathProgramCache]: Analyzing trace with hash -231887552, now seen corresponding path program 1 times [2018-04-10 13:52:28,121 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:28,121 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:28,122 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:28,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:28,122 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:28,133 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:28,174 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:28,174 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-10 13:52:28,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-10 13:52:28,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-10 13:52:28,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-10 13:52:28,175 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand 5 states. [2018-04-10 13:52:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:28,211 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2018-04-10 13:52:28,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-10 13:52:28,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2018-04-10 13:52:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:28,212 INFO L225 Difference]: With dead ends: 96 [2018-04-10 13:52:28,212 INFO L226 Difference]: Without dead ends: 96 [2018-04-10 13:52:28,213 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 [2018-04-10 13:52:28,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-04-10 13:52:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-04-10 13:52:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-04-10 13:52:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2018-04-10 13:52:28,217 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 42 [2018-04-10 13:52:28,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:28,217 INFO L459 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2018-04-10 13:52:28,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-10 13:52:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2018-04-10 13:52:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-04-10 13:52:28,218 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:28,219 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] [2018-04-10 13:52:28,219 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]=== [2018-04-10 13:52:28,219 INFO L82 PathProgramCache]: Analyzing trace with hash -231887551, now seen corresponding path program 1 times [2018-04-10 13:52:28,219 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:28,219 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:28,220 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:28,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:28,220 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:28,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:28,390 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:28,390 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 [2018-04-10 13:52:28,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:28,434 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:28,467 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 [2018-04-10 13:52:28,468 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:28,476 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 [2018-04-10 13:52:28,476 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:28,479 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-10 13:52:28,480 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-10 13:52:28,508 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 [2018-04-10 13:52:28,518 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 [2018-04-10 13:52:28,518 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:28,520 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 [2018-04-10 13:52:28,520 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:28,522 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. [2018-04-10 13:52:28,522 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-10 13:52:28,546 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 [2018-04-10 13:52:28,569 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:28,570 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:28,570 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 [2018-04-10 13:52:28,571 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:28,578 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 [2018-04-10 13:52:28,579 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:28,586 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. [2018-04-10 13:52:28,586 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:34, output treesize:27 [2018-04-10 13:52:28,695 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:28,701 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 [2018-04-10 13:52:28,702 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-04-10 13:52:28,719 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:28,720 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:28,720 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 [2018-04-10 13:52:28,720 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:28,734 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. [2018-04-10 13:52:28,734 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:38, output treesize:52 [2018-04-10 13:52:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2018-04-10 13:52:28,812 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:28,812 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2018-04-10 13:52:28,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-10 13:52:28,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-10 13:52:28,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=322, Unknown=2, NotChecked=74, Total=462 [2018-04-10 13:52:28,813 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 22 states. [2018-04-10 13:52:30,068 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 [2018-04-10 13:52:30,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:30,688 INFO L93 Difference]: Finished difference Result 234 states and 266 transitions. [2018-04-10 13:52:30,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-10 13:52:30,688 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-04-10 13:52:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:30,690 INFO L225 Difference]: With dead ends: 234 [2018-04-10 13:52:30,690 INFO L226 Difference]: Without dead ends: 234 [2018-04-10 13:52:30,690 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=393, Invalid=2159, Unknown=10, NotChecked=300, Total=2862 [2018-04-10 13:52:30,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-04-10 13:52:30,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 178. [2018-04-10 13:52:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-04-10 13:52:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 207 transitions. [2018-04-10 13:52:30,699 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 207 transitions. Word has length 42 [2018-04-10 13:52:30,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:30,699 INFO L459 AbstractCegarLoop]: Abstraction has 178 states and 207 transitions. [2018-04-10 13:52:30,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-10 13:52:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 207 transitions. [2018-04-10 13:52:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-04-10 13:52:30,705 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:30,705 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] [2018-04-10 13:52:30,705 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]=== [2018-04-10 13:52:30,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1401420489, now seen corresponding path program 1 times [2018-04-10 13:52:30,705 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:30,705 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:30,706 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:30,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:30,706 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:30,718 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-04-10 13:52:30,793 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:30,793 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-10 13:52:30,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-10 13:52:30,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-10 13:52:30,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-04-10 13:52:30,794 INFO L87 Difference]: Start difference. First operand 178 states and 207 transitions. Second operand 8 states. [2018-04-10 13:52:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:30,884 INFO L93 Difference]: Finished difference Result 177 states and 204 transitions. [2018-04-10 13:52:30,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-10 13:52:30,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2018-04-10 13:52:30,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:30,885 INFO L225 Difference]: With dead ends: 177 [2018-04-10 13:52:30,885 INFO L226 Difference]: Without dead ends: 177 [2018-04-10 13:52:30,885 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 [2018-04-10 13:52:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-04-10 13:52:30,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-04-10 13:52:30,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-04-10 13:52:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 204 transitions. [2018-04-10 13:52:30,890 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 204 transitions. Word has length 43 [2018-04-10 13:52:30,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:30,890 INFO L459 AbstractCegarLoop]: Abstraction has 177 states and 204 transitions. [2018-04-10 13:52:30,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-10 13:52:30,890 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 204 transitions. [2018-04-10 13:52:30,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-10 13:52:30,890 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:30,891 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] [2018-04-10 13:52:30,891 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]=== [2018-04-10 13:52:30,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1644784265, now seen corresponding path program 1 times [2018-04-10 13:52:30,891 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:30,891 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:30,891 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:30,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:30,891 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:30,899 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:30,966 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:30,966 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 [2018-04-10 13:52:30,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:31,004 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 13:52:31,058 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-10 13:52:31,058 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2018-04-10 13:52:31,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-10 13:52:31,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-10 13:52:31,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-04-10 13:52:31,059 INFO L87 Difference]: Start difference. First operand 177 states and 204 transitions. Second operand 9 states. [2018-04-10 13:52:31,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:31,148 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2018-04-10 13:52:31,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-10 13:52:31,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2018-04-10 13:52:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:31,149 INFO L225 Difference]: With dead ends: 141 [2018-04-10 13:52:31,149 INFO L226 Difference]: Without dead ends: 141 [2018-04-10 13:52:31,150 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 [2018-04-10 13:52:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-04-10 13:52:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2018-04-10 13:52:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-04-10 13:52:31,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2018-04-10 13:52:31,153 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 46 [2018-04-10 13:52:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:31,154 INFO L459 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2018-04-10 13:52:31,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-10 13:52:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2018-04-10 13:52:31,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-04-10 13:52:31,155 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:31,155 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] [2018-04-10 13:52:31,155 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]=== [2018-04-10 13:52:31,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1096362099, now seen corresponding path program 1 times [2018-04-10 13:52:31,155 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:31,155 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:31,156 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:31,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:31,156 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:31,168 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-04-10 13:52:31,219 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 13:52:31,220 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-10 13:52:31,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-10 13:52:31,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-10 13:52:31,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-04-10 13:52:31,220 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand 6 states. [2018-04-10 13:52:31,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:31,284 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2018-04-10 13:52:31,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-10 13:52:31,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2018-04-10 13:52:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:31,289 INFO L225 Difference]: With dead ends: 143 [2018-04-10 13:52:31,289 INFO L226 Difference]: Without dead ends: 143 [2018-04-10 13:52:31,289 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 [2018-04-10 13:52:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-04-10 13:52:31,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 134. [2018-04-10 13:52:31,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-04-10 13:52:31,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2018-04-10 13:52:31,294 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 52 [2018-04-10 13:52:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:31,294 INFO L459 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2018-04-10 13:52:31,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-10 13:52:31,294 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2018-04-10 13:52:31,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-04-10 13:52:31,295 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:31,295 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] [2018-04-10 13:52:31,295 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]=== [2018-04-10 13:52:31,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1224161946, now seen corresponding path program 1 times [2018-04-10 13:52:31,296 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:31,296 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:31,296 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:31,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:31,297 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:31,318 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-10 13:52:31,413 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:31,413 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 [2018-04-10 13:52:31,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:31,439 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-10 13:52:31,500 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:31,500 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2018-04-10 13:52:31,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-10 13:52:31,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-10 13:52:31,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-04-10 13:52:31,501 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 15 states. [2018-04-10 13:52:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:31,641 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2018-04-10 13:52:31,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-10 13:52:31,641 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-04-10 13:52:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:31,642 INFO L225 Difference]: With dead ends: 138 [2018-04-10 13:52:31,642 INFO L226 Difference]: Without dead ends: 138 [2018-04-10 13:52:31,642 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 [2018-04-10 13:52:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-04-10 13:52:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-04-10 13:52:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-04-10 13:52:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2018-04-10 13:52:31,645 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 57 [2018-04-10 13:52:31,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:31,646 INFO L459 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2018-04-10 13:52:31,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-10 13:52:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2018-04-10 13:52:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-04-10 13:52:31,647 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:31,647 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] [2018-04-10 13:52:31,647 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]=== [2018-04-10 13:52:31,647 INFO L82 PathProgramCache]: Analyzing trace with hash -227989441, now seen corresponding path program 1 times [2018-04-10 13:52:31,647 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:31,648 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:31,648 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:31,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:31,648 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:31,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-04-10 13:52:31,745 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:31,745 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 [2018-04-10 13:52:31,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:31,794 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-10 13:52:31,920 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-10 13:52:31,920 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2018-04-10 13:52:31,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-10 13:52:31,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-10 13:52:31,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-04-10 13:52:31,921 INFO L87 Difference]: Start difference. First operand 133 states and 141 transitions. Second operand 14 states. [2018-04-10 13:52:32,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:32,203 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-04-10 13:52:32,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-10 13:52:32,203 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2018-04-10 13:52:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:32,204 INFO L225 Difference]: With dead ends: 146 [2018-04-10 13:52:32,204 INFO L226 Difference]: Without dead ends: 128 [2018-04-10 13:52:32,204 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 [2018-04-10 13:52:32,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-04-10 13:52:32,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2018-04-10 13:52:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-04-10 13:52:32,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2018-04-10 13:52:32,208 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 62 [2018-04-10 13:52:32,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:32,208 INFO L459 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2018-04-10 13:52:32,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-10 13:52:32,208 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2018-04-10 13:52:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-04-10 13:52:32,209 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:32,209 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] [2018-04-10 13:52:32,209 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]=== [2018-04-10 13:52:32,209 INFO L82 PathProgramCache]: Analyzing trace with hash 897277161, now seen corresponding path program 1 times [2018-04-10 13:52:32,209 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:32,209 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:32,210 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:32,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:32,210 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:32,222 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-04-10 13:52:32,386 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:32,386 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 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 [2018-04-10 13:52:32,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:32,418 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:32,462 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 [2018-04-10 13:52:32,463 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 [2018-04-10 13:52:32,463 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:32,464 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-10 13:52:32,466 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-10 13:52:32,466 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-04-10 13:52:32,575 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 [2018-04-10 13:52:32,577 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 [2018-04-10 13:52:32,578 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:32,584 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-10 13:52:32,585 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. [2018-04-10 13:52:32,586 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:15, output treesize:11 [2018-04-10 13:52:32,648 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 [2018-04-10 13:52:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2018-04-10 13:52:32,706 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:32,706 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 34 [2018-04-10 13:52:32,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-10 13:52:32,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-10 13:52:32,706 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=939, Unknown=15, NotChecked=62, Total=1122 [2018-04-10 13:52:32,707 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand 34 states. [2018-04-10 13:52:36,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:36,060 INFO L93 Difference]: Finished difference Result 191 states and 209 transitions. [2018-04-10 13:52:36,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-04-10 13:52:36,060 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 67 [2018-04-10 13:52:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:36,062 INFO L225 Difference]: With dead ends: 191 [2018-04-10 13:52:36,062 INFO L226 Difference]: Without dead ends: 187 [2018-04-10 13:52:36,063 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=413, Invalid=3325, Unknown=48, NotChecked=120, Total=3906 [2018-04-10 13:52:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-04-10 13:52:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2018-04-10 13:52:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-04-10 13:52:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2018-04-10 13:52:36,068 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 67 [2018-04-10 13:52:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:36,068 INFO L459 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2018-04-10 13:52:36,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-10 13:52:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2018-04-10 13:52:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-04-10 13:52:36,069 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:36,070 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] [2018-04-10 13:52:36,070 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]=== [2018-04-10 13:52:36,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2066805359, now seen corresponding path program 1 times [2018-04-10 13:52:36,070 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:36,070 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:36,071 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:36,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:36,071 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:36,085 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-04-10 13:52:36,205 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:36,205 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 [2018-04-10 13:52:36,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:36,241 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:36,315 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:36,316 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 [2018-04-10 13:52:36,317 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:36,324 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:36,325 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:36,325 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 [2018-04-10 13:52:36,325 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:36,331 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. [2018-04-10 13:52:36,331 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:35, output treesize:28 [2018-04-10 13:52:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-04-10 13:52:36,401 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:36,401 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2018-04-10 13:52:36,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-10 13:52:36,401 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-10 13:52:36,401 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2018-04-10 13:52:36,401 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 19 states. [2018-04-10 13:52:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:36,740 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2018-04-10 13:52:36,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-10 13:52:36,740 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2018-04-10 13:52:36,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:36,741 INFO L225 Difference]: With dead ends: 143 [2018-04-10 13:52:36,741 INFO L226 Difference]: Without dead ends: 143 [2018-04-10 13:52:36,741 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 [2018-04-10 13:52:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-04-10 13:52:36,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2018-04-10 13:52:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-04-10 13:52:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2018-04-10 13:52:36,744 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 78 [2018-04-10 13:52:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:36,744 INFO L459 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2018-04-10 13:52:36,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-10 13:52:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2018-04-10 13:52:36,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-04-10 13:52:36,745 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:36,745 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] [2018-04-10 13:52:36,745 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]=== [2018-04-10 13:52:36,745 INFO L82 PathProgramCache]: Analyzing trace with hash -864143526, now seen corresponding path program 1 times [2018-04-10 13:52:36,745 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:36,745 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:36,746 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:36,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:36,746 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:36,754 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-04-10 13:52:36,777 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:36,777 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 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 [2018-04-10 13:52:36,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:36,800 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-04-10 13:52:36,846 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:36,847 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-04-10 13:52:36,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-10 13:52:36,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-10 13:52:36,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-04-10 13:52:36,847 INFO L87 Difference]: Start difference. First operand 140 states and 149 transitions. Second operand 6 states. [2018-04-10 13:52:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:36,886 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2018-04-10 13:52:36,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-10 13:52:36,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-04-10 13:52:36,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:36,887 INFO L225 Difference]: With dead ends: 145 [2018-04-10 13:52:36,887 INFO L226 Difference]: Without dead ends: 145 [2018-04-10 13:52:36,887 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 [2018-04-10 13:52:36,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-04-10 13:52:36,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2018-04-10 13:52:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-04-10 13:52:36,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2018-04-10 13:52:36,890 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 80 [2018-04-10 13:52:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:36,891 INFO L459 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2018-04-10 13:52:36,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-10 13:52:36,891 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2018-04-10 13:52:36,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-04-10 13:52:36,892 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:36,892 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] [2018-04-10 13:52:36,892 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]=== [2018-04-10 13:52:36,892 INFO L82 PathProgramCache]: Analyzing trace with hash -999779067, now seen corresponding path program 2 times [2018-04-10 13:52:36,892 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:36,892 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:36,893 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:36,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:36,893 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:36,907 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-04-10 13:52:37,054 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:37,054 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 [2018-04-10 13:52:37,059 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:52:37,084 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:52:37,085 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:37,087 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:37,168 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:37,168 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:37,169 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 [2018-04-10 13:52:37,169 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:37,175 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 [2018-04-10 13:52:37,175 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:37,182 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. [2018-04-10 13:52:37,182 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:37, output treesize:30 [2018-04-10 13:52:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-04-10 13:52:37,304 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:37,304 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2018-04-10 13:52:37,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-10 13:52:37,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-10 13:52:37,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2018-04-10 13:52:37,305 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand 22 states. [2018-04-10 13:52:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:37,747 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2018-04-10 13:52:37,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-04-10 13:52:37,747 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 84 [2018-04-10 13:52:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:37,748 INFO L225 Difference]: With dead ends: 141 [2018-04-10 13:52:37,748 INFO L226 Difference]: Without dead ends: 141 [2018-04-10 13:52:37,748 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 [2018-04-10 13:52:37,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-04-10 13:52:37,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2018-04-10 13:52:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-04-10 13:52:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2018-04-10 13:52:37,751 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 84 [2018-04-10 13:52:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:37,751 INFO L459 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2018-04-10 13:52:37,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-10 13:52:37,751 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2018-04-10 13:52:37,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-04-10 13:52:37,751 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:37,752 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] [2018-04-10 13:52:37,752 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]=== [2018-04-10 13:52:37,752 INFO L82 PathProgramCache]: Analyzing trace with hash 311899052, now seen corresponding path program 2 times [2018-04-10 13:52:37,752 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:37,752 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:37,753 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:37,753 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:37,753 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:37,764 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-04-10 13:52:37,863 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:37,863 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 [2018-04-10 13:52:37,868 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:52:37,895 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:52:37,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:37,897 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-04-10 13:52:37,973 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:37,973 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-04-10 13:52:37,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-10 13:52:37,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-10 13:52:37,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-04-10 13:52:37,973 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 17 states. [2018-04-10 13:52:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:38,246 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2018-04-10 13:52:38,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-10 13:52:38,246 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 93 [2018-04-10 13:52:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:38,247 INFO L225 Difference]: With dead ends: 148 [2018-04-10 13:52:38,247 INFO L226 Difference]: Without dead ends: 148 [2018-04-10 13:52:38,247 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 [2018-04-10 13:52:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-04-10 13:52:38,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 141. [2018-04-10 13:52:38,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-04-10 13:52:38,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2018-04-10 13:52:38,249 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 93 [2018-04-10 13:52:38,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:38,249 INFO L459 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2018-04-10 13:52:38,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-10 13:52:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2018-04-10 13:52:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-04-10 13:52:38,250 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:38,250 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] [2018-04-10 13:52:38,250 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]=== [2018-04-10 13:52:38,250 INFO L82 PathProgramCache]: Analyzing trace with hash -52037211, now seen corresponding path program 2 times [2018-04-10 13:52:38,250 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:38,251 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:38,251 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:38,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:38,251 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:38,268 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 68 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-04-10 13:52:38,413 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:38,413 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 [2018-04-10 13:52:38,418 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:52:38,448 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:52:38,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:38,450 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-04-10 13:52:38,536 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:38,536 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2018-04-10 13:52:38,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-10 13:52:38,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-10 13:52:38,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-04-10 13:52:38,537 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand 19 states. [2018-04-10 13:52:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:38,804 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2018-04-10 13:52:38,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-10 13:52:38,804 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 109 [2018-04-10 13:52:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:38,805 INFO L225 Difference]: With dead ends: 164 [2018-04-10 13:52:38,805 INFO L226 Difference]: Without dead ends: 138 [2018-04-10 13:52:38,805 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 [2018-04-10 13:52:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-04-10 13:52:38,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2018-04-10 13:52:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-04-10 13:52:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2018-04-10 13:52:38,808 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 109 [2018-04-10 13:52:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:38,808 INFO L459 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2018-04-10 13:52:38,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-10 13:52:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2018-04-10 13:52:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-04-10 13:52:38,808 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:38,808 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] [2018-04-10 13:52:38,808 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]=== [2018-04-10 13:52:38,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1577506560, now seen corresponding path program 3 times [2018-04-10 13:52:38,809 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:38,809 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:38,809 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:38,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:38,809 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:38,837 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 10 proven. 65 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-04-10 13:52:39,196 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:39,196 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 [2018-04-10 13:52:39,202 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:52:39,232 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-04-10 13:52:39,232 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:39,235 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:39,238 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 [2018-04-10 13:52:39,238 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,250 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 [2018-04-10 13:52:39,251 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,253 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,254 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-10 13:52:39,267 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 [2018-04-10 13:52:39,270 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 [2018-04-10 13:52:39,271 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,273 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 [2018-04-10 13:52:39,274 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,275 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. [2018-04-10 13:52:39,275 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-10 13:52:39,302 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 [2018-04-10 13:52:39,312 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:39,314 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 [2018-04-10 13:52:39,315 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,325 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:39,326 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:39,327 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 [2018-04-10 13:52:39,327 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,340 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. [2018-04-10 13:52:39,340 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:34, output treesize:27 [2018-04-10 13:52:39,411 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 [2018-04-10 13:52:39,412 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,415 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-10 13:52:39,415 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,416 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. [2018-04-10 13:52:39,417 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-10 13:52:39,425 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 [2018-04-10 13:52:39,446 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:39,454 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 [2018-04-10 13:52:39,455 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-04-10 13:52:39,481 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:39,481 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:39,482 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 [2018-04-10 13:52:39,482 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,496 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. [2018-04-10 13:52:39,496 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:45, output treesize:66 [2018-04-10 13:52:39,634 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 [2018-04-10 13:52:39,635 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,638 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 [2018-04-10 13:52:39,639 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,640 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. [2018-04-10 13:52:39,640 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-10 13:52:39,648 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 [2018-04-10 13:52:39,655 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:39,664 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 [2018-04-10 13:52:39,664 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-04-10 13:52:39,708 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:39,709 INFO L700 Elim1Store]: detected not equals via solver [2018-04-10 13:52:39,710 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 [2018-04-10 13:52:39,710 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-10 13:52:39,730 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. [2018-04-10 13:52:39,730 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:60, output treesize:96 [2018-04-10 13:52:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 14 not checked. [2018-04-10 13:52:39,880 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:39,880 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14] total 32 [2018-04-10 13:52:39,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-04-10 13:52:39,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-04-10 13:52:39,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=697, Unknown=4, NotChecked=228, Total=1056 [2018-04-10 13:52:39,880 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand 33 states. [2018-04-10 13:52:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:40,644 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2018-04-10 13:52:40,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-10 13:52:40,644 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 114 [2018-04-10 13:52:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:40,644 INFO L225 Difference]: With dead ends: 134 [2018-04-10 13:52:40,645 INFO L226 Difference]: Without dead ends: 134 [2018-04-10 13:52:40,645 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 [2018-04-10 13:52:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-04-10 13:52:40,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-04-10 13:52:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-04-10 13:52:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2018-04-10 13:52:40,649 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 114 [2018-04-10 13:52:40,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:40,649 INFO L459 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2018-04-10 13:52:40,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-04-10 13:52:40,649 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2018-04-10 13:52:40,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-04-10 13:52:40,650 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:40,650 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] [2018-04-10 13:52:40,650 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]=== [2018-04-10 13:52:40,650 INFO L82 PathProgramCache]: Analyzing trace with hash -308556470, now seen corresponding path program 1 times [2018-04-10 13:52:40,650 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:40,650 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:40,651 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:40,651 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:40,651 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:40,666 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-04-10 13:52:40,714 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:40,714 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 [2018-04-10 13:52:40,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:40,762 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-04-10 13:52:40,797 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:40,797 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-04-10 13:52:40,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-10 13:52:40,798 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-10 13:52:40,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-04-10 13:52:40,798 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand 7 states. [2018-04-10 13:52:40,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:40,836 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-04-10 13:52:40,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-10 13:52:40,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2018-04-10 13:52:40,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:40,838 INFO L225 Difference]: With dead ends: 146 [2018-04-10 13:52:40,838 INFO L226 Difference]: Without dead ends: 146 [2018-04-10 13:52:40,838 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 [2018-04-10 13:52:40,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-04-10 13:52:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-04-10 13:52:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-04-10 13:52:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 146 transitions. [2018-04-10 13:52:40,842 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 146 transitions. Word has length 122 [2018-04-10 13:52:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:40,842 INFO L459 AbstractCegarLoop]: Abstraction has 141 states and 146 transitions. [2018-04-10 13:52:40,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-10 13:52:40,842 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 146 transitions. [2018-04-10 13:52:40,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-04-10 13:52:40,843 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:40,844 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] [2018-04-10 13:52:40,844 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]=== [2018-04-10 13:52:40,844 INFO L82 PathProgramCache]: Analyzing trace with hash -974589226, now seen corresponding path program 2 times [2018-04-10 13:52:40,844 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:40,844 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:40,845 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:40,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:40,845 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:40,865 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-04-10 13:52:40,956 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:40,956 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 [2018-04-10 13:52:40,965 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:52:41,025 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:52:41,025 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:41,029 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 133 proven. 10 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2018-04-10 13:52:41,154 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:41,154 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 16 [2018-04-10 13:52:41,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-10 13:52:41,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-10 13:52:41,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-04-10 13:52:41,155 INFO L87 Difference]: Start difference. First operand 141 states and 146 transitions. Second operand 16 states. [2018-04-10 13:52:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:41,304 INFO L93 Difference]: Finished difference Result 208 states and 221 transitions. [2018-04-10 13:52:41,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-10 13:52:41,305 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 169 [2018-04-10 13:52:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:41,305 INFO L225 Difference]: With dead ends: 208 [2018-04-10 13:52:41,306 INFO L226 Difference]: Without dead ends: 208 [2018-04-10 13:52:41,306 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 [2018-04-10 13:52:41,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-04-10 13:52:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2018-04-10 13:52:41,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-04-10 13:52:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 189 transitions. [2018-04-10 13:52:41,310 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 189 transitions. Word has length 169 [2018-04-10 13:52:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:41,311 INFO L459 AbstractCegarLoop]: Abstraction has 180 states and 189 transitions. [2018-04-10 13:52:41,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-10 13:52:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 189 transitions. [2018-04-10 13:52:41,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-04-10 13:52:41,312 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:41,312 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] [2018-04-10 13:52:41,312 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]=== [2018-04-10 13:52:41,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1271505270, now seen corresponding path program 3 times [2018-04-10 13:52:41,312 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:41,312 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:41,313 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:41,313 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:41,313 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:41,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2018-04-10 13:52:41,452 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:41,452 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 [2018-04-10 13:52:41,457 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:52:41,479 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-04-10 13:52:41,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:41,482 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2018-04-10 13:52:41,572 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-10 13:52:41,573 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2018-04-10 13:52:41,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-04-10 13:52:41,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-04-10 13:52:41,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-04-10 13:52:41,574 INFO L87 Difference]: Start difference. First operand 180 states and 189 transitions. Second operand 11 states. [2018-04-10 13:52:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:41,696 INFO L93 Difference]: Finished difference Result 191 states and 202 transitions. [2018-04-10 13:52:41,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-10 13:52:41,696 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2018-04-10 13:52:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:41,697 INFO L225 Difference]: With dead ends: 191 [2018-04-10 13:52:41,697 INFO L226 Difference]: Without dead ends: 191 [2018-04-10 13:52:41,698 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 [2018-04-10 13:52:41,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-04-10 13:52:41,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2018-04-10 13:52:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-04-10 13:52:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2018-04-10 13:52:41,702 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 228 [2018-04-10 13:52:41,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:41,702 INFO L459 AbstractCegarLoop]: Abstraction has 183 states and 193 transitions. [2018-04-10 13:52:41,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-04-10 13:52:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 193 transitions. [2018-04-10 13:52:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-04-10 13:52:41,704 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:41,704 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] [2018-04-10 13:52:41,704 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]=== [2018-04-10 13:52:41,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1986892732, now seen corresponding path program 1 times [2018-04-10 13:52:41,705 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:41,705 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:41,705 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:41,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:41,705 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:41,733 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2018-04-10 13:52:41,830 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:41,830 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 [2018-04-10 13:52:41,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:41,937 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 844 proven. 9 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-04-10 13:52:42,098 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:42,098 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2018-04-10 13:52:42,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-10 13:52:42,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-10 13:52:42,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-04-10 13:52:42,099 INFO L87 Difference]: Start difference. First operand 183 states and 193 transitions. Second operand 19 states. [2018-04-10 13:52:42,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:42,344 INFO L93 Difference]: Finished difference Result 223 states and 239 transitions. [2018-04-10 13:52:42,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-10 13:52:42,345 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 286 [2018-04-10 13:52:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:42,346 INFO L225 Difference]: With dead ends: 223 [2018-04-10 13:52:42,346 INFO L226 Difference]: Without dead ends: 206 [2018-04-10 13:52:42,347 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 [2018-04-10 13:52:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-04-10 13:52:42,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 198. [2018-04-10 13:52:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-04-10 13:52:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 209 transitions. [2018-04-10 13:52:42,354 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 209 transitions. Word has length 286 [2018-04-10 13:52:42,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:42,354 INFO L459 AbstractCegarLoop]: Abstraction has 198 states and 209 transitions. [2018-04-10 13:52:42,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-10 13:52:42,354 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 209 transitions. [2018-04-10 13:52:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-04-10 13:52:42,356 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:42,357 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] [2018-04-10 13:52:42,357 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]=== [2018-04-10 13:52:42,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1059600550, now seen corresponding path program 2 times [2018-04-10 13:52:42,357 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:42,357 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:42,358 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:42,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:42,358 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:42,402 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 1933 trivial. 0 not checked. [2018-04-10 13:52:42,640 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:42,640 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 [2018-04-10 13:52:42,648 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:52:42,762 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:52:42,763 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:42,769 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 1284 proven. 24 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2018-04-10 13:52:42,940 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:42,940 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2018-04-10 13:52:42,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-04-10 13:52:42,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-04-10 13:52:42,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-04-10 13:52:42,942 INFO L87 Difference]: Start difference. First operand 198 states and 209 transitions. Second operand 21 states. [2018-04-10 13:52:43,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:43,185 INFO L93 Difference]: Finished difference Result 305 states and 332 transitions. [2018-04-10 13:52:43,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-10 13:52:43,186 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 359 [2018-04-10 13:52:43,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:43,187 INFO L225 Difference]: With dead ends: 305 [2018-04-10 13:52:43,187 INFO L226 Difference]: Without dead ends: 305 [2018-04-10 13:52:43,188 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2018-04-10 13:52:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-04-10 13:52:43,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 243. [2018-04-10 13:52:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-04-10 13:52:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 258 transitions. [2018-04-10 13:52:43,192 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 258 transitions. Word has length 359 [2018-04-10 13:52:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:43,192 INFO L459 AbstractCegarLoop]: Abstraction has 243 states and 258 transitions. [2018-04-10 13:52:43,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-04-10 13:52:43,193 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 258 transitions. [2018-04-10 13:52:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-04-10 13:52:43,194 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:43,194 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] [2018-04-10 13:52:43,194 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]=== [2018-04-10 13:52:43,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1405874031, now seen corresponding path program 3 times [2018-04-10 13:52:43,195 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:43,195 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:43,195 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:43,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:43,195 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:43,225 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3483 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 3271 trivial. 0 not checked. [2018-04-10 13:52:43,457 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:43,457 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 [2018-04-10 13:52:43,464 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:52:43,573 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-04-10 13:52:43,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:43,581 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3483 backedges. 973 proven. 21 refuted. 0 times theorem prover too weak. 2489 trivial. 0 not checked. [2018-04-10 13:52:43,790 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:43,791 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2018-04-10 13:52:43,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-10 13:52:43,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-10 13:52:43,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-04-10 13:52:43,792 INFO L87 Difference]: Start difference. First operand 243 states and 258 transitions. Second operand 18 states. [2018-04-10 13:52:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:44,095 INFO L93 Difference]: Finished difference Result 349 states and 389 transitions. [2018-04-10 13:52:44,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-10 13:52:44,095 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 441 [2018-04-10 13:52:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:44,096 INFO L225 Difference]: With dead ends: 349 [2018-04-10 13:52:44,096 INFO L226 Difference]: Without dead ends: 340 [2018-04-10 13:52:44,096 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 [2018-04-10 13:52:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-04-10 13:52:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2018-04-10 13:52:44,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-04-10 13:52:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 289 transitions. [2018-04-10 13:52:44,100 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 289 transitions. Word has length 441 [2018-04-10 13:52:44,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:44,101 INFO L459 AbstractCegarLoop]: Abstraction has 266 states and 289 transitions. [2018-04-10 13:52:44,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-10 13:52:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 289 transitions. [2018-04-10 13:52:44,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-04-10 13:52:44,103 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:44,103 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] [2018-04-10 13:52:44,103 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]=== [2018-04-10 13:52:44,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1260936207, now seen corresponding path program 4 times [2018-04-10 13:52:44,103 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:44,103 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:44,104 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:44,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:44,104 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:44,139 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 5131 trivial. 0 not checked. [2018-04-10 13:52:44,537 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:44,537 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 [2018-04-10 13:52:44,543 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:52:44,647 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:52:44,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:44,653 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 3198 proven. 44 refuted. 0 times theorem prover too weak. 2159 trivial. 0 not checked. [2018-04-10 13:52:44,980 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:44,981 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2018-04-10 13:52:44,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-10 13:52:44,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-10 13:52:44,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2018-04-10 13:52:44,982 INFO L87 Difference]: Start difference. First operand 266 states and 289 transitions. Second operand 25 states. [2018-04-10 13:52:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:45,345 INFO L93 Difference]: Finished difference Result 602 states and 697 transitions. [2018-04-10 13:52:45,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-04-10 13:52:45,345 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 530 [2018-04-10 13:52:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:45,349 INFO L225 Difference]: With dead ends: 602 [2018-04-10 13:52:45,349 INFO L226 Difference]: Without dead ends: 602 [2018-04-10 13:52:45,350 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=294, Invalid=1266, Unknown=0, NotChecked=0, Total=1560 [2018-04-10 13:52:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2018-04-10 13:52:45,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 317. [2018-04-10 13:52:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-04-10 13:52:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 345 transitions. [2018-04-10 13:52:45,360 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 345 transitions. Word has length 530 [2018-04-10 13:52:45,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:45,360 INFO L459 AbstractCegarLoop]: Abstraction has 317 states and 345 transitions. [2018-04-10 13:52:45,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-10 13:52:45,361 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 345 transitions. [2018-04-10 13:52:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-04-10 13:52:45,363 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:45,363 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] [2018-04-10 13:52:45,363 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]=== [2018-04-10 13:52:45,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1579835560, now seen corresponding path program 5 times [2018-04-10 13:52:45,364 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:45,364 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:45,364 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:45,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:45,364 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:45,410 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7993 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 7658 trivial. 0 not checked. [2018-04-10 13:52:46,050 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:46,050 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 [2018-04-10 13:52:46,056 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:52:48,815 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-04-10 13:52:48,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:48,827 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7993 backedges. 4046 proven. 128 refuted. 0 times theorem prover too weak. 3819 trivial. 0 not checked. [2018-04-10 13:52:49,257 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:49,257 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2018-04-10 13:52:49,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-04-10 13:52:49,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-04-10 13:52:49,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2018-04-10 13:52:49,258 INFO L87 Difference]: Start difference. First operand 317 states and 345 transitions. Second operand 27 states. [2018-04-10 13:52:49,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:49,784 INFO L93 Difference]: Finished difference Result 369 states and 396 transitions. [2018-04-10 13:52:49,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-10 13:52:49,784 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 624 [2018-04-10 13:52:49,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:49,785 INFO L225 Difference]: With dead ends: 369 [2018-04-10 13:52:49,785 INFO L226 Difference]: Without dead ends: 353 [2018-04-10 13:52:49,786 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=1929, Unknown=0, NotChecked=0, Total=2256 [2018-04-10 13:52:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-04-10 13:52:49,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 334. [2018-04-10 13:52:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-04-10 13:52:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 356 transitions. [2018-04-10 13:52:49,789 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 356 transitions. Word has length 624 [2018-04-10 13:52:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:49,789 INFO L459 AbstractCegarLoop]: Abstraction has 334 states and 356 transitions. [2018-04-10 13:52:49,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-04-10 13:52:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 356 transitions. [2018-04-10 13:52:49,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-04-10 13:52:49,792 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:49,792 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] [2018-04-10 13:52:49,792 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]=== [2018-04-10 13:52:49,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1723936527, now seen corresponding path program 6 times [2018-04-10 13:52:49,793 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:49,793 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:49,793 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:49,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:49,793 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:49,841 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10474 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 10067 trivial. 0 not checked. [2018-04-10 13:52:50,708 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:50,709 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 [2018-04-10 13:52:50,742 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:52:54,439 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-04-10 13:52:54,439 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:54,448 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10474 backedges. 2204 proven. 38 refuted. 0 times theorem prover too weak. 8232 trivial. 0 not checked. [2018-04-10 13:52:54,690 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:54,690 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-04-10 13:52:54,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-10 13:52:54,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-10 13:52:54,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-04-10 13:52:54,691 INFO L87 Difference]: Start difference. First operand 334 states and 356 transitions. Second operand 24 states. [2018-04-10 13:52:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:54,998 INFO L93 Difference]: Finished difference Result 534 states and 604 transitions. [2018-04-10 13:52:54,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-04-10 13:52:54,999 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 704 [2018-04-10 13:52:54,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:55,002 INFO L225 Difference]: With dead ends: 534 [2018-04-10 13:52:55,002 INFO L226 Difference]: Without dead ends: 525 [2018-04-10 13:52:55,003 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2018-04-10 13:52:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2018-04-10 13:52:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 357. [2018-04-10 13:52:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-04-10 13:52:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 388 transitions. [2018-04-10 13:52:55,013 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 388 transitions. Word has length 704 [2018-04-10 13:52:55,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:55,014 INFO L459 AbstractCegarLoop]: Abstraction has 357 states and 388 transitions. [2018-04-10 13:52:55,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-10 13:52:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 388 transitions. [2018-04-10 13:52:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-04-10 13:52:55,020 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:55,020 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] [2018-04-10 13:52:55,021 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]=== [2018-04-10 13:52:55,021 INFO L82 PathProgramCache]: Analyzing trace with hash 324361008, now seen corresponding path program 7 times [2018-04-10 13:52:55,021 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:55,021 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:55,022 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:55,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:55,022 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:55,109 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14684 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 14198 trivial. 0 not checked. [2018-04-10 13:52:56,233 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:56,233 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 [2018-04-10 13:52:56,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:56,468 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 14684 backedges. 8198 proven. 70 refuted. 0 times theorem prover too weak. 6416 trivial. 0 not checked. [2018-04-10 13:52:56,986 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:56,986 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 30 [2018-04-10 13:52:56,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-10 13:52:56,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-10 13:52:56,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2018-04-10 13:52:56,988 INFO L87 Difference]: Start difference. First operand 357 states and 388 transitions. Second operand 30 states. [2018-04-10 13:52:57,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:57,370 INFO L93 Difference]: Finished difference Result 876 states and 1019 transitions. [2018-04-10 13:52:57,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-04-10 13:52:57,371 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 814 [2018-04-10 13:52:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:57,376 INFO L225 Difference]: With dead ends: 876 [2018-04-10 13:52:57,376 INFO L226 Difference]: Without dead ends: 876 [2018-04-10 13:52:57,377 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 [2018-04-10 13:52:57,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2018-04-10 13:52:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 414. [2018-04-10 13:52:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-04-10 13:52:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 450 transitions. [2018-04-10 13:52:57,391 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 450 transitions. Word has length 814 [2018-04-10 13:52:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:57,392 INFO L459 AbstractCegarLoop]: Abstraction has 414 states and 450 transitions. [2018-04-10 13:52:57,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-10 13:52:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 450 transitions. [2018-04-10 13:52:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-04-10 13:52:57,399 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:57,400 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] [2018-04-10 13:52:57,400 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]=== [2018-04-10 13:52:57,400 INFO L82 PathProgramCache]: Analyzing trace with hash -362362842, now seen corresponding path program 8 times [2018-04-10 13:52:57,400 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:57,400 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:57,401 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:57,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:52:57,401 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:57,505 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:52:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 20144 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 19572 trivial. 0 not checked. [2018-04-10 13:52:58,557 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:52:58,557 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 [2018-04-10 13:52:58,563 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:52:58,737 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:52:58,737 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:52:58,747 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:52:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 20144 backedges. 9377 proven. 38 refuted. 0 times theorem prover too weak. 10729 trivial. 0 not checked. [2018-04-10 13:52:59,386 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:52:59,386 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2018-04-10 13:52:59,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-10 13:52:59,387 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-10 13:52:59,387 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2018-04-10 13:52:59,387 INFO L87 Difference]: Start difference. First operand 414 states and 450 transitions. Second operand 30 states. [2018-04-10 13:52:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:52:59,815 INFO L93 Difference]: Finished difference Result 456 states and 491 transitions. [2018-04-10 13:52:59,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-04-10 13:52:59,815 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 931 [2018-04-10 13:52:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:52:59,817 INFO L225 Difference]: With dead ends: 456 [2018-04-10 13:52:59,817 INFO L226 Difference]: Without dead ends: 440 [2018-04-10 13:52:59,818 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 918 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=439, Invalid=1913, Unknown=0, NotChecked=0, Total=2352 [2018-04-10 13:52:59,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2018-04-10 13:52:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 413. [2018-04-10 13:52:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-04-10 13:52:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 441 transitions. [2018-04-10 13:52:59,822 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 441 transitions. Word has length 931 [2018-04-10 13:52:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:52:59,824 INFO L459 AbstractCegarLoop]: Abstraction has 413 states and 441 transitions. [2018-04-10 13:52:59,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-10 13:52:59,824 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 441 transitions. [2018-04-10 13:52:59,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2018-04-10 13:52:59,829 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:52:59,830 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] [2018-04-10 13:52:59,830 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]=== [2018-04-10 13:52:59,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1709282318, now seen corresponding path program 9 times [2018-04-10 13:52:59,830 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:52:59,830 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:52:59,831 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:59,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:52:59,831 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:52:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:52:59,932 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:53:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 24702 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 24037 trivial. 0 not checked. [2018-04-10 13:53:01,222 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:53:01,222 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 [2018-04-10 13:53:01,227 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:53:01,570 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-04-10 13:53:01,571 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:53:01,580 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:53:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 24702 backedges. 7406 proven. 327 refuted. 0 times theorem prover too weak. 16969 trivial. 0 not checked. [2018-04-10 13:53:02,600 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:53:02,600 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 37 [2018-04-10 13:53:02,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-04-10 13:53:02,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-04-10 13:53:02,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1109, Unknown=0, NotChecked=0, Total=1332 [2018-04-10 13:53:02,601 INFO L87 Difference]: Start difference. First operand 413 states and 441 transitions. Second operand 37 states. [2018-04-10 13:53:03,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:53:03,264 INFO L93 Difference]: Finished difference Result 741 states and 848 transitions. [2018-04-10 13:53:03,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-04-10 13:53:03,264 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 1022 [2018-04-10 13:53:03,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:53:03,268 INFO L225 Difference]: With dead ends: 741 [2018-04-10 13:53:03,269 INFO L226 Difference]: Without dead ends: 732 [2018-04-10 13:53:03,270 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1003 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=553, Invalid=3107, Unknown=0, NotChecked=0, Total=3660 [2018-04-10 13:53:03,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2018-04-10 13:53:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 464. [2018-04-10 13:53:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2018-04-10 13:53:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 506 transitions. [2018-04-10 13:53:03,281 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 506 transitions. Word has length 1022 [2018-04-10 13:53:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:53:03,282 INFO L459 AbstractCegarLoop]: Abstraction has 464 states and 506 transitions. [2018-04-10 13:53:03,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-04-10 13:53:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 506 transitions. [2018-04-10 13:53:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1154 [2018-04-10 13:53:03,293 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:53:03,293 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] [2018-04-10 13:53:03,293 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]=== [2018-04-10 13:53:03,294 INFO L82 PathProgramCache]: Analyzing trace with hash 452446382, now seen corresponding path program 10 times [2018-04-10 13:53:03,294 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:53:03,294 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:53:03,295 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:53:03,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:53:03,295 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:53:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:53:03,412 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:53:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 32549 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 31784 trivial. 0 not checked. [2018-04-10 13:53:05,236 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:53:05,236 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 [2018-04-10 13:53:05,263 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:53:05,476 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:53:05,476 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:53:05,485 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:53:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 32549 backedges. 17085 proven. 102 refuted. 0 times theorem prover too weak. 15362 trivial. 0 not checked. [2018-04-10 13:53:05,986 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:53:05,987 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2018-04-10 13:53:05,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-10 13:53:05,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-10 13:53:05,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=946, Unknown=0, NotChecked=0, Total=1190 [2018-04-10 13:53:05,988 INFO L87 Difference]: Start difference. First operand 464 states and 506 transitions. Second operand 35 states. [2018-04-10 13:53:06,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:53:06,425 INFO L93 Difference]: Finished difference Result 1209 states and 1418 transitions. [2018-04-10 13:53:06,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-04-10 13:53:06,425 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 1153 [2018-04-10 13:53:06,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:53:06,428 INFO L225 Difference]: With dead ends: 1209 [2018-04-10 13:53:06,428 INFO L226 Difference]: Without dead ends: 1209 [2018-04-10 13:53:06,429 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=617, Invalid=2689, Unknown=0, NotChecked=0, Total=3306 [2018-04-10 13:53:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2018-04-10 13:53:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 527. [2018-04-10 13:53:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-04-10 13:53:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 574 transitions. [2018-04-10 13:53:06,438 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 574 transitions. Word has length 1153 [2018-04-10 13:53:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:53:06,439 INFO L459 AbstractCegarLoop]: Abstraction has 527 states and 574 transitions. [2018-04-10 13:53:06,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-10 13:53:06,439 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 574 transitions. [2018-04-10 13:53:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1294 [2018-04-10 13:53:06,446 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:53:06,447 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] [2018-04-10 13:53:06,447 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]=== [2018-04-10 13:53:06,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2142572569, now seen corresponding path program 11 times [2018-04-10 13:53:06,447 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:53:06,447 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:53:06,447 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:53:06,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:53:06,448 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:53:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:53:06,577 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:53:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 42453 backedges. 0 proven. 872 refuted. 0 times theorem prover too weak. 41581 trivial. 0 not checked. [2018-04-10 13:53:08,397 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:53:08,397 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 [2018-04-10 13:53:08,414 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-10 13:53:25,164 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-04-10 13:53:25,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:53:25,181 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:53:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 42453 backedges. 18458 proven. 92 refuted. 0 times theorem prover too weak. 23903 trivial. 0 not checked. [2018-04-10 13:53:25,780 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:53:25,781 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33 [2018-04-10 13:53:25,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-04-10 13:53:25,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-04-10 13:53:25,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2018-04-10 13:53:25,782 INFO L87 Difference]: Start difference. First operand 527 states and 574 transitions. Second operand 33 states. [2018-04-10 13:53:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:53:26,305 INFO L93 Difference]: Finished difference Result 722 states and 818 transitions. [2018-04-10 13:53:26,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-04-10 13:53:26,305 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1293 [2018-04-10 13:53:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:53:26,307 INFO L225 Difference]: With dead ends: 722 [2018-04-10 13:53:26,307 INFO L226 Difference]: Without dead ends: 722 [2018-04-10 13:53:26,308 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 1280 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2018-04-10 13:53:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2018-04-10 13:53:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 616. [2018-04-10 13:53:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2018-04-10 13:53:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 673 transitions. [2018-04-10 13:53:26,319 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 673 transitions. Word has length 1293 [2018-04-10 13:53:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:53:26,319 INFO L459 AbstractCegarLoop]: Abstraction has 616 states and 673 transitions. [2018-04-10 13:53:26,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-04-10 13:53:26,319 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 673 transitions. [2018-04-10 13:53:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1396 [2018-04-10 13:53:26,334 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:53:26,335 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] [2018-04-10 13:53:26,335 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]=== [2018-04-10 13:53:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash 719366254, now seen corresponding path program 12 times [2018-04-10 13:53:26,335 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:53:26,335 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:53:26,336 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:53:26,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:53:26,336 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:53:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:53:26,484 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:53:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 49992 backedges. 0 proven. 986 refuted. 0 times theorem prover too weak. 49006 trivial. 0 not checked. [2018-04-10 13:53:28,528 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:53:28,528 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 [2018-04-10 13:53:28,534 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-10 13:54:57,393 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2018-04-10 13:54:57,393 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:54:57,422 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:54:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 49992 backedges. 6802 proven. 185 refuted. 0 times theorem prover too weak. 43005 trivial. 0 not checked. [2018-04-10 13:54:58,135 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:54:58,136 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 34 [2018-04-10 13:54:58,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-10 13:54:58,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-10 13:54:58,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2018-04-10 13:54:58,138 INFO L87 Difference]: Start difference. First operand 616 states and 673 transitions. Second operand 34 states. [2018-04-10 13:54:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:54:58,794 INFO L93 Difference]: Finished difference Result 1059 states and 1234 transitions. [2018-04-10 13:54:58,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-10 13:54:58,794 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 1395 [2018-04-10 13:54:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:54:58,798 INFO L225 Difference]: With dead ends: 1059 [2018-04-10 13:54:58,798 INFO L226 Difference]: Without dead ends: 1050 [2018-04-10 13:54:58,799 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1382 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=721, Invalid=3185, Unknown=0, NotChecked=0, Total=3906 [2018-04-10 13:54:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2018-04-10 13:54:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 639. [2018-04-10 13:54:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2018-04-10 13:54:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 709 transitions. [2018-04-10 13:54:58,814 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 709 transitions. Word has length 1395 [2018-04-10 13:54:58,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:54:58,814 INFO L459 AbstractCegarLoop]: Abstraction has 639 states and 709 transitions. [2018-04-10 13:54:58,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-10 13:54:58,814 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 709 transitions. [2018-04-10 13:54:58,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1548 [2018-04-10 13:54:58,825 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:54:58,826 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] [2018-04-10 13:54:58,826 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]=== [2018-04-10 13:54:58,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1789902741, now seen corresponding path program 13 times [2018-04-10 13:54:58,826 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:54:58,826 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:54:58,827 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:54:58,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:54:58,827 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:54:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:54:58,939 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:55:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 63136 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 62029 trivial. 0 not checked. [2018-04-10 13:55:01,400 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:55:01,400 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 [2018-04-10 13:55:01,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:55:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:55:01,864 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:55:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 63136 backedges. 31434 proven. 140 refuted. 0 times theorem prover too weak. 31562 trivial. 0 not checked. [2018-04-10 13:55:02,739 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:55:02,739 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2018-04-10 13:55:02,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-10 13:55:02,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-10 13:55:02,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1239, Unknown=0, NotChecked=0, Total=1560 [2018-04-10 13:55:02,741 INFO L87 Difference]: Start difference. First operand 639 states and 709 transitions. Second operand 40 states. [2018-04-10 13:55:03,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:55:03,368 INFO L93 Difference]: Finished difference Result 1589 states and 1880 transitions. [2018-04-10 13:55:03,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-04-10 13:55:03,368 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1547 [2018-04-10 13:55:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:55:03,374 INFO L225 Difference]: With dead ends: 1589 [2018-04-10 13:55:03,374 INFO L226 Difference]: Without dead ends: 1589 [2018-04-10 13:55:03,375 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 [2018-04-10 13:55:03,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2018-04-10 13:55:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 708. [2018-04-10 13:55:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2018-04-10 13:55:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 783 transitions. [2018-04-10 13:55:03,388 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 783 transitions. Word has length 1547 [2018-04-10 13:55:03,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:55:03,389 INFO L459 AbstractCegarLoop]: Abstraction has 708 states and 783 transitions. [2018-04-10 13:55:03,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-10 13:55:03,389 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 783 transitions. [2018-04-10 13:55:03,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2018-04-10 13:55:03,402 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:55:03,402 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] [2018-04-10 13:55:03,402 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]=== [2018-04-10 13:55:03,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2068100029, now seen corresponding path program 14 times [2018-04-10 13:55:03,402 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:55:03,403 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:55:03,403 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:55:03,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-10 13:55:03,403 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:55:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:55:03,620 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:55:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 79405 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 78170 trivial. 0 not checked. [2018-04-10 13:55:06,623 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:55:06,623 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 [2018-04-10 13:55:06,629 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-10 13:55:06,946 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-10 13:55:06,946 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:55:06,963 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:55:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 79405 backedges. 33239 proven. 87 refuted. 0 times theorem prover too weak. 46079 trivial. 0 not checked. [2018-04-10 13:55:07,887 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:55:07,887 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 40 [2018-04-10 13:55:07,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-10 13:55:07,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-10 13:55:07,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2018-04-10 13:55:07,889 INFO L87 Difference]: Start difference. First operand 708 states and 783 transitions. Second operand 40 states. [2018-04-10 13:55:08,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:55:08,593 INFO L93 Difference]: Finished difference Result 759 states and 835 transitions. [2018-04-10 13:55:08,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-04-10 13:55:08,593 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1710 [2018-04-10 13:55:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:55:08,595 INFO L225 Difference]: With dead ends: 759 [2018-04-10 13:55:08,595 INFO L226 Difference]: Without dead ends: 743 [2018-04-10 13:55:08,596 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 [2018-04-10 13:55:08,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2018-04-10 13:55:08,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 707. [2018-04-10 13:55:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2018-04-10 13:55:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 770 transitions. [2018-04-10 13:55:08,604 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 770 transitions. Word has length 1710 [2018-04-10 13:55:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:55:08,605 INFO L459 AbstractCegarLoop]: Abstraction has 707 states and 770 transitions. [2018-04-10 13:55:08,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-10 13:55:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 770 transitions. [2018-04-10 13:55:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1824 [2018-04-10 13:55:08,628 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:55:08,628 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] [2018-04-10 13:55:08,628 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]=== [2018-04-10 13:55:08,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1044979833, now seen corresponding path program 15 times [2018-04-10 13:55:08,629 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:55:08,629 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:55:08,629 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:55:08,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:55:08,629 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:55:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:55:08,828 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:55:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 90994 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 89624 trivial. 0 not checked. [2018-04-10 13:55:12,376 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:55:12,376 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 [2018-04-10 13:55:12,381 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-10 13:55:14,338 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-04-10 13:55:14,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:55:14,351 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:55:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 90994 backedges. 10671 proven. 119 refuted. 0 times theorem prover too weak. 80204 trivial. 0 not checked. [2018-04-10 13:55:15,345 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:55:15,346 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16] total 35 [2018-04-10 13:55:15,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-10 13:55:15,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-10 13:55:15,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2018-04-10 13:55:15,347 INFO L87 Difference]: Start difference. First operand 707 states and 770 transitions. Second operand 35 states. [2018-04-10 13:55:15,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:55:15,779 INFO L93 Difference]: Finished difference Result 1325 states and 1559 transitions. [2018-04-10 13:55:15,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-04-10 13:55:15,779 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 1823 [2018-04-10 13:55:15,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:55:15,783 INFO L225 Difference]: With dead ends: 1325 [2018-04-10 13:55:15,783 INFO L226 Difference]: Without dead ends: 1316 [2018-04-10 13:55:15,783 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1855 GetRequests, 1812 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=404, Invalid=1576, Unknown=0, NotChecked=0, Total=1980 [2018-04-10 13:55:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2018-04-10 13:55:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 730. [2018-04-10 13:55:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2018-04-10 13:55:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 809 transitions. [2018-04-10 13:55:15,793 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 809 transitions. Word has length 1823 [2018-04-10 13:55:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:55:15,793 INFO L459 AbstractCegarLoop]: Abstraction has 730 states and 809 transitions. [2018-04-10 13:55:15,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-10 13:55:15,793 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 809 transitions. [2018-04-10 13:55:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1997 [2018-04-10 13:55:15,808 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:55:15,809 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] [2018-04-10 13:55:15,809 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]=== [2018-04-10 13:55:15,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1767490169, now seen corresponding path program 16 times [2018-04-10 13:55:15,809 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:55:15,809 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:55:15,810 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:55:15,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:55:15,810 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:55:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:55:16,006 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:55:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 111410 backedges. 0 proven. 1512 refuted. 0 times theorem prover too weak. 109898 trivial. 0 not checked. [2018-04-10 13:55:20,322 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:55:20,322 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 [2018-04-10 13:55:20,327 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-10 13:55:20,674 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-10 13:55:20,674 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-10 13:55:20,694 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-10 13:55:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 111410 backedges. 53084 proven. 184 refuted. 0 times theorem prover too weak. 58142 trivial. 0 not checked. [2018-04-10 13:55:21,896 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-10 13:55:21,897 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2018-04-10 13:55:21,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-04-10 13:55:21,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-04-10 13:55:21,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=1571, Unknown=0, NotChecked=0, Total=1980 [2018-04-10 13:55:21,898 INFO L87 Difference]: Start difference. First operand 730 states and 809 transitions. Second operand 45 states. [2018-04-10 13:55:22,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 13:55:22,485 INFO L93 Difference]: Finished difference Result 1992 states and 2373 transitions. [2018-04-10 13:55:22,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-04-10 13:55:22,485 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 1996 [2018-04-10 13:55:22,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 13:55:22,492 INFO L225 Difference]: With dead ends: 1992 [2018-04-10 13:55:22,492 INFO L226 Difference]: Without dead ends: 1992 [2018-04-10 13:55:22,492 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2050 GetRequests, 1976 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1064, Invalid=4636, Unknown=0, NotChecked=0, Total=5700 [2018-04-10 13:55:22,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2018-04-10 13:55:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 805. [2018-04-10 13:55:22,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2018-04-10 13:55:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 889 transitions. [2018-04-10 13:55:22,509 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 889 transitions. Word has length 1996 [2018-04-10 13:55:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 13:55:22,510 INFO L459 AbstractCegarLoop]: Abstraction has 805 states and 889 transitions. [2018-04-10 13:55:22,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-04-10 13:55:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 889 transitions. [2018-04-10 13:55:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2183 [2018-04-10 13:55:22,530 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 13:55:22,531 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] [2018-04-10 13:55:22,531 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]=== [2018-04-10 13:55:22,531 INFO L82 PathProgramCache]: Analyzing trace with hash 959573400, now seen corresponding path program 17 times [2018-04-10 13:55:22,531 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-10 13:55:22,532 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-10 13:55:22,532 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:55:22,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-10 13:55:22,532 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-10 13:55:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 13:55:22,737 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-10 13:55:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 136310 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 134649 trivial. 0 not checked. [2018-04-10 13:55:27,995 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-10 13:55:27,995 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 [2018-04-10 13:55:28,001 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown