java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-11 11:25:57,562 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 11:25:57,564 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 11:25:57,576 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-11 11:25:57,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-11 11:25:57,577 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-11 11:25:57,578 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-11 11:25:57,580 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-11 11:25:57,582 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-11 11:25:57,583 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-11 11:25:57,583 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-11 11:25:57,584 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-11 11:25:57,584 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-11 11:25:57,585 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-11 11:25:57,586 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-11 11:25:57,588 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-11 11:25:57,589 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-11 11:25:57,591 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-11 11:25:57,592 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-11 11:25:57,593 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-11 11:25:57,595 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-11 11:25:57,595 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-11 11:25:57,595 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-11 11:25:57,596 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-11 11:25:57,597 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-11 11:25:57,598 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-11 11:25:57,598 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-11 11:25:57,598 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-11 11:25:57,599 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-11 11:25:57,599 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-11 11:25:57,600 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-11 11:25:57,600 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 [2018-04-11 11:25:57,619 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 11:25:57,620 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 11:25:57,621 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-11 11:25:57,621 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-11 11:25:57,621 INFO L133 SettingsManager]: * Use SBE=true [2018-04-11 11:25:57,621 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 11:25:57,621 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 11:25:57,622 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 11:25:57,622 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 11:25:57,622 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 11:25:57,622 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 11:25:57,622 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 11:25:57,622 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-11 11:25:57,622 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 11:25:57,623 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 11:25:57,623 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 11:25:57,623 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-11 11:25:57,623 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-11 11:25:57,623 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 11:25:57,623 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 11:25:57,623 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 11:25:57,624 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-11 11:25:57,624 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-11 11:25:57,624 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-04-11 11:25:57,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 11:25:57,668 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 11:25:57,672 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 11:25:57,673 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 11:25:57,674 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 11:25:57,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-11 11:25:58,038 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG13d6d0e93 [2018-04-11 11:25:58,124 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 11:25:58,124 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 11:25:58,125 INFO L168 CDTParser]: Scanning ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-11 11:25:58,125 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 11:25:58,126 INFO L215 ultiparseSymbolTable]: [2018-04-11 11:25:58,126 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 11:25:58,126 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo ('foo') in ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-11 11:25:58,126 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-11 11:25:58,126 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__bar ('bar') in ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-11 11:25:58,126 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 11:25:58,126 INFO L233 ultiparseSymbolTable]: [2018-04-11 11:25:58,139 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG13d6d0e93 [2018-04-11 11:25:58,142 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 11:25:58,143 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 11:25:58,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 11:25:58,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 11:25:58,149 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 11:25:58,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 11:25:58" (1/1) ... [2018-04-11 11:25:58,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e98a139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58, skipping insertion in model container [2018-04-11 11:25:58,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 11:25:58" (1/1) ... [2018-04-11 11:25:58,162 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 11:25:58,172 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 11:25:58,282 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 11:25:58,305 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 11:25:58,310 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 10 non ball SCCs. Number of states in SCCs 10. [2018-04-11 11:25:58,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58 WrapperNode [2018-04-11 11:25:58,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 11:25:58,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 11:25:58,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 11:25:58,319 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 11:25:58,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58" (1/1) ... [2018-04-11 11:25:58,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58" (1/1) ... [2018-04-11 11:25:58,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58" (1/1) ... [2018-04-11 11:25:58,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58" (1/1) ... [2018-04-11 11:25:58,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58" (1/1) ... [2018-04-11 11:25:58,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58" (1/1) ... [2018-04-11 11:25:58,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58" (1/1) ... [2018-04-11 11:25:58,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 11:25:58,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 11:25:58,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 11:25:58,346 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 11:25:58,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58" (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 [2018-04-11 11:25:58,382 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 11:25:58,382 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 11:25:58,382 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__bar [2018-04-11 11:25:58,382 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo [2018-04-11 11:25:58,382 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 11:25:58,382 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__bar [2018-04-11 11:25:58,383 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 11:25:58,383 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__true_valid_memsafety_c__foo [2018-04-11 11:25:58,383 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-11 11:25:58,383 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 11:25:58,383 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 11:25:58,383 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 11:25:58,383 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 11:25:58,383 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 11:25:58,383 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 11:25:58,621 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 11:25:58,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 11:25:58 BoogieIcfgContainer [2018-04-11 11:25:58,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 11:25:58,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 11:25:58,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 11:25:58,624 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 11:25:58,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 11:25:58" (1/3) ... [2018-04-11 11:25:58,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37085a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 11:25:58, skipping insertion in model container [2018-04-11 11:25:58,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 11:25:58" (2/3) ... [2018-04-11 11:25:58,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37085a21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 11:25:58, skipping insertion in model container [2018-04-11 11:25:58,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 11:25:58" (3/3) ... [2018-04-11 11:25:58,627 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_true-valid-memsafety.c [2018-04-11 11:25:58,635 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-11 11:25:58,639 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-04-11 11:25:58,668 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 11:25:58,668 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 11:25:58,669 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-11 11:25:58,669 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-11 11:25:58,669 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-11 11:25:58,669 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 11:25:58,669 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 11:25:58,669 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 11:25:58,670 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 11:25:58,670 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 11:25:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2018-04-11 11:25:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-11 11:25:58,689 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:25:58,690 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 11:25:58,690 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]=== [2018-04-11 11:25:58,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1613294992, now seen corresponding path program 1 times [2018-04-11 11:25:58,694 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:25:58,694 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:25:58,723 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:58,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:25:58,724 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:25:58,752 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:25:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:25:58,773 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:25:58,773 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-04-11 11:25:58,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-04-11 11:25:58,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-04-11 11:25:58,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-11 11:25:58,788 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2018-04-11 11:25:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:25:58,802 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2018-04-11 11:25:58,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-04-11 11:25:58,804 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-04-11 11:25:58,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:25:58,812 INFO L225 Difference]: With dead ends: 68 [2018-04-11 11:25:58,813 INFO L226 Difference]: Without dead ends: 65 [2018-04-11 11:25:58,814 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 [2018-04-11 11:25:58,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-04-11 11:25:58,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-04-11 11:25:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-04-11 11:25:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-04-11 11:25:58,839 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 13 [2018-04-11 11:25:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:25:58,840 INFO L459 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-04-11 11:25:58,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-04-11 11:25:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-04-11 11:25:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-04-11 11:25:58,840 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:25:58,840 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 11:25:58,840 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]=== [2018-04-11 11:25:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1969953325, now seen corresponding path program 1 times [2018-04-11 11:25:58,841 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:25:58,841 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:25:58,841 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:58,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:25:58,842 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:25:58,854 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:25:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:25:58,879 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:25:58,879 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-11 11:25:58,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-11 11:25:58,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-11 11:25:58,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-11 11:25:58,880 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 3 states. [2018-04-11 11:25:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:25:58,932 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2018-04-11 11:25:58,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-11 11:25:58,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-04-11 11:25:58,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:25:58,935 INFO L225 Difference]: With dead ends: 71 [2018-04-11 11:25:58,935 INFO L226 Difference]: Without dead ends: 71 [2018-04-11 11:25:58,936 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 [2018-04-11 11:25:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-04-11 11:25:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2018-04-11 11:25:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-04-11 11:25:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-04-11 11:25:58,945 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 14 [2018-04-11 11:25:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:25:58,945 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-04-11 11:25:58,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-11 11:25:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-04-11 11:25:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-04-11 11:25:58,946 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:25:58,946 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 11:25:58,946 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]=== [2018-04-11 11:25:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1297061679, now seen corresponding path program 1 times [2018-04-11 11:25:58,947 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:25:58,947 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:25:58,948 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:58,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:25:58,948 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:25:58,966 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:25:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:25:59,022 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:25:59,022 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-04-11 11:25:59,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-11 11:25:59,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-11 11:25:59,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-04-11 11:25:59,023 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 6 states. [2018-04-11 11:25:59,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:25:59,105 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2018-04-11 11:25:59,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 11:25:59,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-04-11 11:25:59,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:25:59,107 INFO L225 Difference]: With dead ends: 85 [2018-04-11 11:25:59,107 INFO L226 Difference]: Without dead ends: 85 [2018-04-11 11:25:59,107 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 [2018-04-11 11:25:59,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-04-11 11:25:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2018-04-11 11:25:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-04-11 11:25:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2018-04-11 11:25:59,112 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 17 [2018-04-11 11:25:59,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:25:59,112 INFO L459 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2018-04-11 11:25:59,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-11 11:25:59,112 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2018-04-11 11:25:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-11 11:25:59,113 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:25:59,113 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] [2018-04-11 11:25:59,113 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]=== [2018-04-11 11:25:59,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184185, now seen corresponding path program 1 times [2018-04-11 11:25:59,114 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:25:59,114 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:25:59,115 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:25:59,115 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:25:59,125 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:25:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:25:59,157 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:25:59,157 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-11 11:25:59,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 11:25:59,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 11:25:59,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-11 11:25:59,157 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 5 states. [2018-04-11 11:25:59,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:25:59,216 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-04-11 11:25:59,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 11:25:59,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-04-11 11:25:59,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:25:59,219 INFO L225 Difference]: With dead ends: 77 [2018-04-11 11:25:59,219 INFO L226 Difference]: Without dead ends: 77 [2018-04-11 11:25:59,220 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 [2018-04-11 11:25:59,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-04-11 11:25:59,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-04-11 11:25:59,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-04-11 11:25:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-04-11 11:25:59,225 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 21 [2018-04-11 11:25:59,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:25:59,226 INFO L459 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-04-11 11:25:59,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 11:25:59,226 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-04-11 11:25:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-11 11:25:59,227 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:25:59,227 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] [2018-04-11 11:25:59,227 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]=== [2018-04-11 11:25:59,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184184, now seen corresponding path program 1 times [2018-04-11 11:25:59,227 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:25:59,227 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:25:59,228 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:25:59,228 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:25:59,240 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:25:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:25:59,287 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:25:59,287 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-11 11:25:59,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 11:25:59,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 11:25:59,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-04-11 11:25:59,288 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2018-04-11 11:25:59,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:25:59,355 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2018-04-11 11:25:59,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 11:25:59,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-04-11 11:25:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:25:59,356 INFO L225 Difference]: With dead ends: 89 [2018-04-11 11:25:59,357 INFO L226 Difference]: Without dead ends: 89 [2018-04-11 11:25:59,357 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 [2018-04-11 11:25:59,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-04-11 11:25:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2018-04-11 11:25:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-04-11 11:25:59,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2018-04-11 11:25:59,360 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 21 [2018-04-11 11:25:59,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:25:59,361 INFO L459 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2018-04-11 11:25:59,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 11:25:59,361 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2018-04-11 11:25:59,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-11 11:25:59,361 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:25:59,361 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] [2018-04-11 11:25:59,362 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]=== [2018-04-11 11:25:59,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1759981910, now seen corresponding path program 1 times [2018-04-11 11:25:59,362 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:25:59,362 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:25:59,362 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:25:59,363 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:25:59,374 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:25:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:25:59,409 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:25:59,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-11 11:25:59,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 11:25:59,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 11:25:59,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-11 11:25:59,410 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 5 states. [2018-04-11 11:25:59,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:25:59,432 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2018-04-11 11:25:59,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 11:25:59,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-04-11 11:25:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:25:59,433 INFO L225 Difference]: With dead ends: 91 [2018-04-11 11:25:59,434 INFO L226 Difference]: Without dead ends: 91 [2018-04-11 11:25:59,434 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 [2018-04-11 11:25:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-04-11 11:25:59,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2018-04-11 11:25:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-04-11 11:25:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2018-04-11 11:25:59,447 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 31 [2018-04-11 11:25:59,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:25:59,448 INFO L459 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2018-04-11 11:25:59,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 11:25:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2018-04-11 11:25:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-11 11:25:59,448 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:25:59,448 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] [2018-04-11 11:25:59,448 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]=== [2018-04-11 11:25:59,449 INFO L82 PathProgramCache]: Analyzing trace with hash 216183673, now seen corresponding path program 1 times [2018-04-11 11:25:59,449 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:25:59,449 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:25:59,450 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:25:59,450 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:25:59,465 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:25:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:25:59,565 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:25:59,565 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-11 11:25:59,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 11:25:59,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 11:25:59,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-11 11:25:59,566 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 5 states. [2018-04-11 11:25:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:25:59,643 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2018-04-11 11:25:59,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 11:25:59,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-04-11 11:25:59,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:25:59,644 INFO L225 Difference]: With dead ends: 86 [2018-04-11 11:25:59,644 INFO L226 Difference]: Without dead ends: 86 [2018-04-11 11:25:59,645 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 [2018-04-11 11:25:59,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-04-11 11:25:59,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-04-11 11:25:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-11 11:25:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2018-04-11 11:25:59,649 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 31 [2018-04-11 11:25:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:25:59,649 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2018-04-11 11:25:59,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 11:25:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2018-04-11 11:25:59,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-11 11:25:59,649 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:25:59,649 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] [2018-04-11 11:25:59,649 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]=== [2018-04-11 11:25:59,650 INFO L82 PathProgramCache]: Analyzing trace with hash 216183674, now seen corresponding path program 1 times [2018-04-11 11:25:59,650 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:25:59,650 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:25:59,650 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:25:59,650 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:25:59,658 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:25:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:25:59,767 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:25:59,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-11 11:25:59,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 11:25:59,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 11:25:59,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-04-11 11:25:59,768 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 8 states. [2018-04-11 11:25:59,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:25:59,926 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2018-04-11 11:25:59,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-11 11:25:59,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-04-11 11:25:59,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:25:59,927 INFO L225 Difference]: With dead ends: 101 [2018-04-11 11:25:59,927 INFO L226 Difference]: Without dead ends: 101 [2018-04-11 11:25:59,927 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 [2018-04-11 11:25:59,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-04-11 11:25:59,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2018-04-11 11:25:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-04-11 11:25:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2018-04-11 11:25:59,930 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 31 [2018-04-11 11:25:59,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:25:59,930 INFO L459 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2018-04-11 11:25:59,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 11:25:59,930 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2018-04-11 11:25:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-04-11 11:25:59,931 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:25:59,931 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] [2018-04-11 11:25:59,931 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]=== [2018-04-11 11:25:59,931 INFO L82 PathProgramCache]: Analyzing trace with hash -231887552, now seen corresponding path program 1 times [2018-04-11 11:25:59,931 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:25:59,931 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:25:59,932 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:25:59,932 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:25:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:25:59,939 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:25:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:25:59,977 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:25:59,977 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-11 11:25:59,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 11:25:59,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 11:25:59,978 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-11 11:25:59,978 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand 5 states. [2018-04-11 11:26:00,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:00,012 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2018-04-11 11:26:00,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 11:26:00,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2018-04-11 11:26:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:00,013 INFO L225 Difference]: With dead ends: 96 [2018-04-11 11:26:00,013 INFO L226 Difference]: Without dead ends: 96 [2018-04-11 11:26:00,014 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 [2018-04-11 11:26:00,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-04-11 11:26:00,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-04-11 11:26:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-04-11 11:26:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2018-04-11 11:26:00,019 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 42 [2018-04-11 11:26:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:00,019 INFO L459 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2018-04-11 11:26:00,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 11:26:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2018-04-11 11:26:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-04-11 11:26:00,020 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:00,020 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] [2018-04-11 11:26:00,020 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]=== [2018-04-11 11:26:00,020 INFO L82 PathProgramCache]: Analyzing trace with hash -231887551, now seen corresponding path program 1 times [2018-04-11 11:26:00,021 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:00,021 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:00,021 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:00,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:00,022 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:00,035 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:26:00,201 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:00,201 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 [2018-04-11 11:26:00,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:00,249 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:00,284 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 11:26:00,285 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:00,294 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 11:26:00,295 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:00,300 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 11:26:00,300 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-11 11:26:00,338 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 [2018-04-11 11:26:00,348 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 [2018-04-11 11:26:00,349 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:00,351 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 [2018-04-11 11:26:00,352 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:00,356 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. [2018-04-11 11:26:00,357 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-11 11:26:00,385 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 [2018-04-11 11:26:00,404 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:00,405 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:00,405 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 [2018-04-11 11:26:00,406 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:00,415 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 [2018-04-11 11:26:00,416 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:00,422 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. [2018-04-11 11:26:00,422 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:34, output treesize:27 [2018-04-11 11:26:00,556 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:00,567 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 [2018-04-11 11:26:00,569 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-04-11 11:26:00,601 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:00,603 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:00,604 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 [2018-04-11 11:26:00,604 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:00,622 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. [2018-04-11 11:26:00,622 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:38, output treesize:52 [2018-04-11 11:26:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2018-04-11 11:26:00,722 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:00,723 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2018-04-11 11:26:00,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-11 11:26:00,723 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-11 11:26:00,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=322, Unknown=2, NotChecked=74, Total=462 [2018-04-11 11:26:00,724 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 22 states. [2018-04-11 11:26:01,337 WARN L151 SmtUtils]: Spent 115ms on a formula simplification. DAG size of input: 32 DAG size of output 29 [2018-04-11 11:26:01,691 WARN L151 SmtUtils]: Spent 136ms on a formula simplification. DAG size of input: 66 DAG size of output 47 [2018-04-11 11:26:02,445 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 [2018-04-11 11:26:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:03,101 INFO L93 Difference]: Finished difference Result 234 states and 266 transitions. [2018-04-11 11:26:03,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 11:26:03,105 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-04-11 11:26:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:03,107 INFO L225 Difference]: With dead ends: 234 [2018-04-11 11:26:03,107 INFO L226 Difference]: Without dead ends: 234 [2018-04-11 11:26:03,108 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=393, Invalid=2159, Unknown=10, NotChecked=300, Total=2862 [2018-04-11 11:26:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-04-11 11:26:03,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 178. [2018-04-11 11:26:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-04-11 11:26:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 207 transitions. [2018-04-11 11:26:03,117 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 207 transitions. Word has length 42 [2018-04-11 11:26:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:03,117 INFO L459 AbstractCegarLoop]: Abstraction has 178 states and 207 transitions. [2018-04-11 11:26:03,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-11 11:26:03,118 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 207 transitions. [2018-04-11 11:26:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-04-11 11:26:03,118 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:03,119 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] [2018-04-11 11:26:03,119 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]=== [2018-04-11 11:26:03,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1401420489, now seen corresponding path program 1 times [2018-04-11 11:26:03,119 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:03,119 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:03,120 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:03,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:03,120 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:03,132 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-04-11 11:26:03,194 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:26:03,194 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-04-11 11:26:03,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-11 11:26:03,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-11 11:26:03,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-04-11 11:26:03,195 INFO L87 Difference]: Start difference. First operand 178 states and 207 transitions. Second operand 8 states. [2018-04-11 11:26:03,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:03,283 INFO L93 Difference]: Finished difference Result 177 states and 204 transitions. [2018-04-11 11:26:03,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-11 11:26:03,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2018-04-11 11:26:03,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:03,284 INFO L225 Difference]: With dead ends: 177 [2018-04-11 11:26:03,284 INFO L226 Difference]: Without dead ends: 177 [2018-04-11 11:26:03,284 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 [2018-04-11 11:26:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-04-11 11:26:03,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-04-11 11:26:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-04-11 11:26:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 204 transitions. [2018-04-11 11:26:03,294 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 204 transitions. Word has length 43 [2018-04-11 11:26:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:03,295 INFO L459 AbstractCegarLoop]: Abstraction has 177 states and 204 transitions. [2018-04-11 11:26:03,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-11 11:26:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 204 transitions. [2018-04-11 11:26:03,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-04-11 11:26:03,296 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:03,296 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] [2018-04-11 11:26:03,296 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]=== [2018-04-11 11:26:03,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1644784265, now seen corresponding path program 1 times [2018-04-11 11:26:03,296 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:03,297 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:03,297 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:03,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:03,298 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:03,310 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:26:03,357 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:03,357 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 [2018-04-11 11:26:03,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:03,387 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 11:26:03,421 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-11 11:26:03,421 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2018-04-11 11:26:03,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-11 11:26:03,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-11 11:26:03,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-04-11 11:26:03,421 INFO L87 Difference]: Start difference. First operand 177 states and 204 transitions. Second operand 9 states. [2018-04-11 11:26:03,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:03,481 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2018-04-11 11:26:03,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 11:26:03,482 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2018-04-11 11:26:03,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:03,482 INFO L225 Difference]: With dead ends: 141 [2018-04-11 11:26:03,482 INFO L226 Difference]: Without dead ends: 141 [2018-04-11 11:26:03,482 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 [2018-04-11 11:26:03,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-04-11 11:26:03,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2018-04-11 11:26:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-04-11 11:26:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2018-04-11 11:26:03,485 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 46 [2018-04-11 11:26:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:03,485 INFO L459 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2018-04-11 11:26:03,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-11 11:26:03,485 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2018-04-11 11:26:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-04-11 11:26:03,486 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:03,486 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] [2018-04-11 11:26:03,486 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]=== [2018-04-11 11:26:03,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1096362099, now seen corresponding path program 1 times [2018-04-11 11:26:03,486 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:03,486 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:03,487 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:03,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:03,487 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:03,495 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-04-11 11:26:03,558 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 11:26:03,558 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-11 11:26:03,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-11 11:26:03,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-11 11:26:03,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-04-11 11:26:03,559 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand 6 states. [2018-04-11 11:26:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:03,631 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2018-04-11 11:26:03,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 11:26:03,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2018-04-11 11:26:03,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:03,632 INFO L225 Difference]: With dead ends: 143 [2018-04-11 11:26:03,632 INFO L226 Difference]: Without dead ends: 143 [2018-04-11 11:26:03,633 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 [2018-04-11 11:26:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-04-11 11:26:03,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 134. [2018-04-11 11:26:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-04-11 11:26:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2018-04-11 11:26:03,639 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 52 [2018-04-11 11:26:03,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:03,640 INFO L459 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2018-04-11 11:26:03,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-11 11:26:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2018-04-11 11:26:03,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-04-11 11:26:03,641 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:03,641 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] [2018-04-11 11:26:03,641 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]=== [2018-04-11 11:26:03,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1224161946, now seen corresponding path program 1 times [2018-04-11 11:26:03,641 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:03,641 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:03,642 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:03,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:03,642 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:03,659 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-11 11:26:03,751 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:03,751 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 [2018-04-11 11:26:03,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:03,786 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-11 11:26:03,867 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:03,867 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2018-04-11 11:26:03,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-11 11:26:03,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-11 11:26:03,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-04-11 11:26:03,868 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 15 states. [2018-04-11 11:26:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:04,036 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2018-04-11 11:26:04,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 11:26:04,036 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-04-11 11:26:04,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:04,037 INFO L225 Difference]: With dead ends: 138 [2018-04-11 11:26:04,037 INFO L226 Difference]: Without dead ends: 138 [2018-04-11 11:26:04,037 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 [2018-04-11 11:26:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-04-11 11:26:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-04-11 11:26:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-04-11 11:26:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2018-04-11 11:26:04,039 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 57 [2018-04-11 11:26:04,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:04,039 INFO L459 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2018-04-11 11:26:04,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-11 11:26:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2018-04-11 11:26:04,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-04-11 11:26:04,040 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:04,040 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] [2018-04-11 11:26:04,040 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]=== [2018-04-11 11:26:04,040 INFO L82 PathProgramCache]: Analyzing trace with hash -227989441, now seen corresponding path program 1 times [2018-04-11 11:26:04,040 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:04,040 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:04,041 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:04,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:04,041 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:04,049 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-04-11 11:26:04,157 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:04,157 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 [2018-04-11 11:26:04,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:04,198 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-04-11 11:26:04,306 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-11 11:26:04,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2018-04-11 11:26:04,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-04-11 11:26:04,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-04-11 11:26:04,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-04-11 11:26:04,307 INFO L87 Difference]: Start difference. First operand 133 states and 141 transitions. Second operand 14 states. [2018-04-11 11:26:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:04,615 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-04-11 11:26:04,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-11 11:26:04,615 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2018-04-11 11:26:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:04,616 INFO L225 Difference]: With dead ends: 146 [2018-04-11 11:26:04,616 INFO L226 Difference]: Without dead ends: 128 [2018-04-11 11:26:04,617 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 [2018-04-11 11:26:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-04-11 11:26:04,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2018-04-11 11:26:04,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-04-11 11:26:04,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2018-04-11 11:26:04,620 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 62 [2018-04-11 11:26:04,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:04,620 INFO L459 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2018-04-11 11:26:04,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-04-11 11:26:04,620 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2018-04-11 11:26:04,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-04-11 11:26:04,621 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:04,621 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] [2018-04-11 11:26:04,621 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]=== [2018-04-11 11:26:04,621 INFO L82 PathProgramCache]: Analyzing trace with hash 897277161, now seen corresponding path program 1 times [2018-04-11 11:26:04,621 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:04,622 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:04,622 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:04,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:04,622 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:04,636 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-04-11 11:26:04,860 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:04,860 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 [2018-04-11 11:26:04,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:04,891 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:04,957 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 [2018-04-11 11:26:04,963 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 [2018-04-11 11:26:04,964 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:04,965 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 11:26:04,967 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-11 11:26:04,968 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-04-11 11:26:05,093 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 [2018-04-11 11:26:05,095 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 [2018-04-11 11:26:05,095 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:05,103 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 11:26:05,104 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. [2018-04-11 11:26:05,104 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:15, output treesize:11 [2018-04-11 11:26:05,179 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 [2018-04-11 11:26:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2018-04-11 11:26:05,241 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:05,241 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 34 [2018-04-11 11:26:05,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-11 11:26:05,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-11 11:26:05,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=939, Unknown=15, NotChecked=62, Total=1122 [2018-04-11 11:26:05,242 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand 34 states. [2018-04-11 11:26:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:08,566 INFO L93 Difference]: Finished difference Result 191 states and 209 transitions. [2018-04-11 11:26:08,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-04-11 11:26:08,566 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 67 [2018-04-11 11:26:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:08,568 INFO L225 Difference]: With dead ends: 191 [2018-04-11 11:26:08,568 INFO L226 Difference]: Without dead ends: 187 [2018-04-11 11:26:08,569 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=413, Invalid=3325, Unknown=48, NotChecked=120, Total=3906 [2018-04-11 11:26:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-04-11 11:26:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2018-04-11 11:26:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-04-11 11:26:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2018-04-11 11:26:08,575 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 67 [2018-04-11 11:26:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:08,575 INFO L459 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2018-04-11 11:26:08,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-11 11:26:08,576 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2018-04-11 11:26:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-04-11 11:26:08,576 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:08,576 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] [2018-04-11 11:26:08,576 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]=== [2018-04-11 11:26:08,576 INFO L82 PathProgramCache]: Analyzing trace with hash 2066805359, now seen corresponding path program 1 times [2018-04-11 11:26:08,576 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:08,576 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:08,577 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:08,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:08,577 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:08,591 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-04-11 11:26:08,683 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:08,683 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 [2018-04-11 11:26:08,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:08,724 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:08,805 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:08,806 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 [2018-04-11 11:26:08,807 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:08,814 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:08,814 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:08,815 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 [2018-04-11 11:26:08,815 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:08,821 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. [2018-04-11 11:26:08,821 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:35, output treesize:28 [2018-04-11 11:26:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-04-11 11:26:08,888 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:08,888 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2018-04-11 11:26:08,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-11 11:26:08,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-11 11:26:08,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2018-04-11 11:26:08,889 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 19 states. [2018-04-11 11:26:09,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:09,208 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2018-04-11 11:26:09,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-11 11:26:09,208 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2018-04-11 11:26:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:09,209 INFO L225 Difference]: With dead ends: 143 [2018-04-11 11:26:09,209 INFO L226 Difference]: Without dead ends: 143 [2018-04-11 11:26:09,209 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2018-04-11 11:26:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-04-11 11:26:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2018-04-11 11:26:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-04-11 11:26:09,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 149 transitions. [2018-04-11 11:26:09,212 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 149 transitions. Word has length 78 [2018-04-11 11:26:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:09,212 INFO L459 AbstractCegarLoop]: Abstraction has 140 states and 149 transitions. [2018-04-11 11:26:09,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-11 11:26:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 149 transitions. [2018-04-11 11:26:09,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-04-11 11:26:09,213 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:09,213 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] [2018-04-11 11:26:09,213 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]=== [2018-04-11 11:26:09,214 INFO L82 PathProgramCache]: Analyzing trace with hash -864143526, now seen corresponding path program 1 times [2018-04-11 11:26:09,214 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:09,214 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:09,214 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:09,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:09,215 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:09,226 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-04-11 11:26:09,275 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:09,276 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 [2018-04-11 11:26:09,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:09,314 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-04-11 11:26:09,355 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:09,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-04-11 11:26:09,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-11 11:26:09,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-11 11:26:09,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-04-11 11:26:09,356 INFO L87 Difference]: Start difference. First operand 140 states and 149 transitions. Second operand 6 states. [2018-04-11 11:26:09,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:09,381 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2018-04-11 11:26:09,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 11:26:09,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2018-04-11 11:26:09,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:09,381 INFO L225 Difference]: With dead ends: 145 [2018-04-11 11:26:09,382 INFO L226 Difference]: Without dead ends: 145 [2018-04-11 11:26:09,382 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 [2018-04-11 11:26:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-04-11 11:26:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2018-04-11 11:26:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-04-11 11:26:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2018-04-11 11:26:09,384 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 80 [2018-04-11 11:26:09,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:09,384 INFO L459 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2018-04-11 11:26:09,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-11 11:26:09,384 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2018-04-11 11:26:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-04-11 11:26:09,385 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:09,385 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] [2018-04-11 11:26:09,385 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]=== [2018-04-11 11:26:09,385 INFO L82 PathProgramCache]: Analyzing trace with hash -999779067, now seen corresponding path program 2 times [2018-04-11 11:26:09,385 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:09,385 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:09,385 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:09,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:09,386 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:09,396 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 24 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-04-11 11:26:09,542 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:09,542 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 [2018-04-11 11:26:09,547 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 11:26:09,569 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 11:26:09,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:09,572 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:09,646 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:09,646 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:09,647 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 [2018-04-11 11:26:09,647 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:09,655 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 [2018-04-11 11:26:09,655 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:09,661 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. [2018-04-11 11:26:09,661 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:37, output treesize:30 [2018-04-11 11:26:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-04-11 11:26:09,800 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:09,800 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2018-04-11 11:26:09,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-11 11:26:09,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-11 11:26:09,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2018-04-11 11:26:09,800 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand 22 states. [2018-04-11 11:26:10,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:10,258 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2018-04-11 11:26:10,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-04-11 11:26:10,258 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 84 [2018-04-11 11:26:10,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:10,259 INFO L225 Difference]: With dead ends: 141 [2018-04-11 11:26:10,259 INFO L226 Difference]: Without dead ends: 141 [2018-04-11 11:26:10,259 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 [2018-04-11 11:26:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-04-11 11:26:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2018-04-11 11:26:10,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-04-11 11:26:10,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2018-04-11 11:26:10,261 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 84 [2018-04-11 11:26:10,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:10,261 INFO L459 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2018-04-11 11:26:10,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-11 11:26:10,261 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2018-04-11 11:26:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-04-11 11:26:10,262 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:10,262 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] [2018-04-11 11:26:10,262 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]=== [2018-04-11 11:26:10,262 INFO L82 PathProgramCache]: Analyzing trace with hash 311899052, now seen corresponding path program 2 times [2018-04-11 11:26:10,262 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:10,262 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:10,263 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:10,263 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:10,263 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:10,272 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-04-11 11:26:10,374 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:10,374 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 [2018-04-11 11:26:10,379 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 11:26:10,402 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 11:26:10,402 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:10,405 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-04-11 11:26:10,477 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:10,478 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-04-11 11:26:10,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-11 11:26:10,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-11 11:26:10,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-04-11 11:26:10,478 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 17 states. [2018-04-11 11:26:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:10,794 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2018-04-11 11:26:10,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-11 11:26:10,794 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 93 [2018-04-11 11:26:10,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:10,795 INFO L225 Difference]: With dead ends: 148 [2018-04-11 11:26:10,795 INFO L226 Difference]: Without dead ends: 148 [2018-04-11 11:26:10,795 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2018-04-11 11:26:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-04-11 11:26:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 141. [2018-04-11 11:26:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-04-11 11:26:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2018-04-11 11:26:10,798 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 93 [2018-04-11 11:26:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:10,798 INFO L459 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2018-04-11 11:26:10,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-11 11:26:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2018-04-11 11:26:10,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-04-11 11:26:10,799 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:10,799 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] [2018-04-11 11:26:10,799 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]=== [2018-04-11 11:26:10,799 INFO L82 PathProgramCache]: Analyzing trace with hash -52037211, now seen corresponding path program 2 times [2018-04-11 11:26:10,799 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:10,799 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:10,800 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:10,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:10,800 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:10,812 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 68 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-04-11 11:26:10,928 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:10,928 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 [2018-04-11 11:26:10,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 11:26:10,956 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 11:26:10,956 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:10,959 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-04-11 11:26:11,047 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:11,047 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2018-04-11 11:26:11,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-11 11:26:11,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-11 11:26:11,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-04-11 11:26:11,048 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand 19 states. [2018-04-11 11:26:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:11,328 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2018-04-11 11:26:11,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-11 11:26:11,328 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 109 [2018-04-11 11:26:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:11,330 INFO L225 Difference]: With dead ends: 164 [2018-04-11 11:26:11,330 INFO L226 Difference]: Without dead ends: 138 [2018-04-11 11:26:11,330 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 [2018-04-11 11:26:11,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-04-11 11:26:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2018-04-11 11:26:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-04-11 11:26:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2018-04-11 11:26:11,334 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 109 [2018-04-11 11:26:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:11,334 INFO L459 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2018-04-11 11:26:11,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-11 11:26:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2018-04-11 11:26:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-04-11 11:26:11,335 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:11,335 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] [2018-04-11 11:26:11,335 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]=== [2018-04-11 11:26:11,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1577506560, now seen corresponding path program 3 times [2018-04-11 11:26:11,335 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:11,335 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:11,336 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:11,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:11,336 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:11,351 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 10 proven. 65 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-04-11 11:26:11,728 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:11,729 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 [2018-04-11 11:26:11,734 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 11:26:11,768 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-04-11 11:26:11,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:11,770 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:11,773 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 11:26:11,773 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:11,777 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-11 11:26:11,777 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:11,780 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 11:26:11,780 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-11 11:26:11,799 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 [2018-04-11 11:26:11,802 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 [2018-04-11 11:26:11,802 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:11,805 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 [2018-04-11 11:26:11,805 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:11,809 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. [2018-04-11 11:26:11,809 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-11 11:26:11,934 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 [2018-04-11 11:26:11,940 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:11,946 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 [2018-04-11 11:26:11,946 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:11,956 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:11,956 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:11,957 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 [2018-04-11 11:26:11,957 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:11,964 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. [2018-04-11 11:26:11,964 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:34, output treesize:27 [2018-04-11 11:26:12,064 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 [2018-04-11 11:26:12,064 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:12,067 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 [2018-04-11 11:26:12,067 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:12,068 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. [2018-04-11 11:26:12,069 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-11 11:26:12,076 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 [2018-04-11 11:26:12,087 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:12,095 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 [2018-04-11 11:26:12,096 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-04-11 11:26:12,117 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:12,118 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:12,118 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 [2018-04-11 11:26:12,118 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:12,133 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. [2018-04-11 11:26:12,133 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:45, output treesize:66 [2018-04-11 11:26:12,276 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 [2018-04-11 11:26:12,276 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:12,280 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 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 [2018-04-11 11:26:12,280 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:12,281 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. [2018-04-11 11:26:12,281 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2018-04-11 11:26:12,287 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 [2018-04-11 11:26:12,294 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:12,324 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 [2018-04-11 11:26:12,324 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-04-11 11:26:12,364 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:12,365 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 11:26:12,366 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 [2018-04-11 11:26:12,366 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 11:26:12,389 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. [2018-04-11 11:26:12,389 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:60, output treesize:96 [2018-04-11 11:26:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 14 not checked. [2018-04-11 11:26:12,523 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:12,523 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14] total 32 [2018-04-11 11:26:12,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-04-11 11:26:12,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-04-11 11:26:12,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=697, Unknown=4, NotChecked=228, Total=1056 [2018-04-11 11:26:12,523 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand 33 states. [2018-04-11 11:26:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:13,212 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2018-04-11 11:26:13,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-11 11:26:13,212 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 114 [2018-04-11 11:26:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:13,213 INFO L225 Difference]: With dead ends: 134 [2018-04-11 11:26:13,213 INFO L226 Difference]: Without dead ends: 134 [2018-04-11 11:26:13,213 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=265, Invalid=1387, Unknown=4, NotChecked=324, Total=1980 [2018-04-11 11:26:13,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-04-11 11:26:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-04-11 11:26:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-04-11 11:26:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2018-04-11 11:26:13,216 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 114 [2018-04-11 11:26:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:13,217 INFO L459 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2018-04-11 11:26:13,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-04-11 11:26:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2018-04-11 11:26:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-04-11 11:26:13,217 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:13,218 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] [2018-04-11 11:26:13,218 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]=== [2018-04-11 11:26:13,218 INFO L82 PathProgramCache]: Analyzing trace with hash -308556470, now seen corresponding path program 1 times [2018-04-11 11:26:13,218 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:13,218 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:13,218 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:13,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:13,219 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:13,235 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:13,287 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-04-11 11:26:13,288 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:13,288 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 [2018-04-11 11:26:13,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:13,328 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-04-11 11:26:13,355 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:13,356 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-04-11 11:26:13,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 11:26:13,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 11:26:13,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-04-11 11:26:13,356 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand 7 states. [2018-04-11 11:26:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:13,401 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-04-11 11:26:13,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-11 11:26:13,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2018-04-11 11:26:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:13,402 INFO L225 Difference]: With dead ends: 146 [2018-04-11 11:26:13,402 INFO L226 Difference]: Without dead ends: 146 [2018-04-11 11:26:13,402 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 [2018-04-11 11:26:13,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-04-11 11:26:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2018-04-11 11:26:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-04-11 11:26:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 146 transitions. [2018-04-11 11:26:13,405 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 146 transitions. Word has length 122 [2018-04-11 11:26:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:13,406 INFO L459 AbstractCegarLoop]: Abstraction has 141 states and 146 transitions. [2018-04-11 11:26:13,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 11:26:13,406 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 146 transitions. [2018-04-11 11:26:13,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-04-11 11:26:13,407 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:13,407 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] [2018-04-11 11:26:13,407 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]=== [2018-04-11 11:26:13,407 INFO L82 PathProgramCache]: Analyzing trace with hash -974589226, now seen corresponding path program 2 times [2018-04-11 11:26:13,407 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:13,407 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:13,408 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:13,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:13,408 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:13,429 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-04-11 11:26:13,498 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:13,498 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 [2018-04-11 11:26:13,506 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 11:26:13,563 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 11:26:13,563 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:13,567 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 133 proven. 10 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2018-04-11 11:26:13,674 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:13,674 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 16 [2018-04-11 11:26:13,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-11 11:26:13,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-11 11:26:13,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-04-11 11:26:13,675 INFO L87 Difference]: Start difference. First operand 141 states and 146 transitions. Second operand 16 states. [2018-04-11 11:26:13,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:13,878 INFO L93 Difference]: Finished difference Result 208 states and 221 transitions. [2018-04-11 11:26:13,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-11 11:26:13,879 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 169 [2018-04-11 11:26:13,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:13,880 INFO L225 Difference]: With dead ends: 208 [2018-04-11 11:26:13,880 INFO L226 Difference]: Without dead ends: 208 [2018-04-11 11:26:13,880 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 [2018-04-11 11:26:13,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-04-11 11:26:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2018-04-11 11:26:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-04-11 11:26:13,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 189 transitions. [2018-04-11 11:26:13,883 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 189 transitions. Word has length 169 [2018-04-11 11:26:13,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:13,883 INFO L459 AbstractCegarLoop]: Abstraction has 180 states and 189 transitions. [2018-04-11 11:26:13,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-11 11:26:13,884 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 189 transitions. [2018-04-11 11:26:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-04-11 11:26:13,885 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:13,885 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] [2018-04-11 11:26:13,885 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]=== [2018-04-11 11:26:13,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1271505270, now seen corresponding path program 3 times [2018-04-11 11:26:13,885 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:13,885 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:13,886 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:13,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:13,886 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:13,927 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2018-04-11 11:26:14,033 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:14,033 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 [2018-04-11 11:26:14,041 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 11:26:14,066 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-04-11 11:26:14,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:14,068 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2018-04-11 11:26:14,147 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-11 11:26:14,147 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2018-04-11 11:26:14,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-04-11 11:26:14,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-04-11 11:26:14,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-04-11 11:26:14,148 INFO L87 Difference]: Start difference. First operand 180 states and 189 transitions. Second operand 11 states. [2018-04-11 11:26:14,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:14,279 INFO L93 Difference]: Finished difference Result 191 states and 202 transitions. [2018-04-11 11:26:14,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-11 11:26:14,279 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2018-04-11 11:26:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:14,280 INFO L225 Difference]: With dead ends: 191 [2018-04-11 11:26:14,280 INFO L226 Difference]: Without dead ends: 191 [2018-04-11 11:26:14,281 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 [2018-04-11 11:26:14,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-04-11 11:26:14,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2018-04-11 11:26:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-04-11 11:26:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2018-04-11 11:26:14,285 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 228 [2018-04-11 11:26:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:14,286 INFO L459 AbstractCegarLoop]: Abstraction has 183 states and 193 transitions. [2018-04-11 11:26:14,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-04-11 11:26:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 193 transitions. [2018-04-11 11:26:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-04-11 11:26:14,287 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:14,288 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] [2018-04-11 11:26:14,288 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]=== [2018-04-11 11:26:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1986892732, now seen corresponding path program 1 times [2018-04-11 11:26:14,288 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:14,288 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:14,289 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:14,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:14,289 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:14,323 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2018-04-11 11:26:14,441 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:14,441 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 [2018-04-11 11:26:14,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:14,518 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 844 proven. 9 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-04-11 11:26:14,661 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:14,661 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2018-04-11 11:26:14,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-11 11:26:14,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-11 11:26:14,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-04-11 11:26:14,663 INFO L87 Difference]: Start difference. First operand 183 states and 193 transitions. Second operand 19 states. [2018-04-11 11:26:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:14,977 INFO L93 Difference]: Finished difference Result 223 states and 239 transitions. [2018-04-11 11:26:14,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-11 11:26:14,977 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 286 [2018-04-11 11:26:14,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:14,978 INFO L225 Difference]: With dead ends: 223 [2018-04-11 11:26:14,979 INFO L226 Difference]: Without dead ends: 206 [2018-04-11 11:26:14,979 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 [2018-04-11 11:26:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-04-11 11:26:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 198. [2018-04-11 11:26:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-04-11 11:26:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 209 transitions. [2018-04-11 11:26:14,985 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 209 transitions. Word has length 286 [2018-04-11 11:26:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:14,985 INFO L459 AbstractCegarLoop]: Abstraction has 198 states and 209 transitions. [2018-04-11 11:26:14,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-11 11:26:14,985 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 209 transitions. [2018-04-11 11:26:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-04-11 11:26:14,987 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:14,988 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] [2018-04-11 11:26:14,988 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]=== [2018-04-11 11:26:14,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1059600550, now seen corresponding path program 2 times [2018-04-11 11:26:14,988 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:14,988 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:14,989 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:14,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:14,989 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:15,028 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 1933 trivial. 0 not checked. [2018-04-11 11:26:15,232 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:15,232 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 [2018-04-11 11:26:15,241 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 11:26:15,349 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 11:26:15,349 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:15,353 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 1284 proven. 24 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2018-04-11 11:26:15,548 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:15,548 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2018-04-11 11:26:15,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-04-11 11:26:15,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-04-11 11:26:15,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-04-11 11:26:15,549 INFO L87 Difference]: Start difference. First operand 198 states and 209 transitions. Second operand 21 states. [2018-04-11 11:26:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:15,951 INFO L93 Difference]: Finished difference Result 305 states and 332 transitions. [2018-04-11 11:26:15,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-11 11:26:15,951 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 359 [2018-04-11 11:26:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:15,952 INFO L225 Difference]: With dead ends: 305 [2018-04-11 11:26:15,953 INFO L226 Difference]: Without dead ends: 305 [2018-04-11 11:26:15,953 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2018-04-11 11:26:15,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-04-11 11:26:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 243. [2018-04-11 11:26:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-04-11 11:26:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 258 transitions. [2018-04-11 11:26:15,958 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 258 transitions. Word has length 359 [2018-04-11 11:26:15,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:15,959 INFO L459 AbstractCegarLoop]: Abstraction has 243 states and 258 transitions. [2018-04-11 11:26:15,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-04-11 11:26:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 258 transitions. [2018-04-11 11:26:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-04-11 11:26:15,960 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:15,960 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] [2018-04-11 11:26:15,960 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]=== [2018-04-11 11:26:15,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1405874031, now seen corresponding path program 3 times [2018-04-11 11:26:15,961 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:15,961 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:15,961 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:15,961 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:15,961 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:16,010 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3483 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 3271 trivial. 0 not checked. [2018-04-11 11:26:16,250 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:16,250 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 [2018-04-11 11:26:16,261 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 11:26:16,354 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-04-11 11:26:16,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:16,361 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3483 backedges. 973 proven. 21 refuted. 0 times theorem prover too weak. 2489 trivial. 0 not checked. [2018-04-11 11:26:16,510 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:16,510 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2018-04-11 11:26:16,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-11 11:26:16,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-11 11:26:16,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-04-11 11:26:16,511 INFO L87 Difference]: Start difference. First operand 243 states and 258 transitions. Second operand 18 states. [2018-04-11 11:26:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:16,834 INFO L93 Difference]: Finished difference Result 349 states and 389 transitions. [2018-04-11 11:26:16,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-11 11:26:16,834 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 441 [2018-04-11 11:26:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:16,835 INFO L225 Difference]: With dead ends: 349 [2018-04-11 11:26:16,835 INFO L226 Difference]: Without dead ends: 340 [2018-04-11 11:26:16,836 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 [2018-04-11 11:26:16,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-04-11 11:26:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2018-04-11 11:26:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-04-11 11:26:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 289 transitions. [2018-04-11 11:26:16,841 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 289 transitions. Word has length 441 [2018-04-11 11:26:16,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:16,841 INFO L459 AbstractCegarLoop]: Abstraction has 266 states and 289 transitions. [2018-04-11 11:26:16,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-11 11:26:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 289 transitions. [2018-04-11 11:26:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-04-11 11:26:16,843 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:16,843 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] [2018-04-11 11:26:16,843 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]=== [2018-04-11 11:26:16,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1260936207, now seen corresponding path program 4 times [2018-04-11 11:26:16,843 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:16,844 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:16,844 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:16,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:16,844 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:16,894 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 5131 trivial. 0 not checked. [2018-04-11 11:26:17,307 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:17,307 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 [2018-04-11 11:26:17,315 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-11 11:26:17,478 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-11 11:26:17,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:17,488 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 3198 proven. 44 refuted. 0 times theorem prover too weak. 2159 trivial. 0 not checked. [2018-04-11 11:26:17,778 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:17,778 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2018-04-11 11:26:17,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-11 11:26:17,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-11 11:26:17,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2018-04-11 11:26:17,780 INFO L87 Difference]: Start difference. First operand 266 states and 289 transitions. Second operand 25 states. [2018-04-11 11:26:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:18,116 INFO L93 Difference]: Finished difference Result 602 states and 697 transitions. [2018-04-11 11:26:18,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-04-11 11:26:18,116 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 530 [2018-04-11 11:26:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:18,119 INFO L225 Difference]: With dead ends: 602 [2018-04-11 11:26:18,119 INFO L226 Difference]: Without dead ends: 602 [2018-04-11 11:26:18,120 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=294, Invalid=1266, Unknown=0, NotChecked=0, Total=1560 [2018-04-11 11:26:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2018-04-11 11:26:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 317. [2018-04-11 11:26:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-04-11 11:26:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 345 transitions. [2018-04-11 11:26:18,129 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 345 transitions. Word has length 530 [2018-04-11 11:26:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:18,130 INFO L459 AbstractCegarLoop]: Abstraction has 317 states and 345 transitions. [2018-04-11 11:26:18,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-11 11:26:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 345 transitions. [2018-04-11 11:26:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-04-11 11:26:18,132 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:18,133 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] [2018-04-11 11:26:18,133 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]=== [2018-04-11 11:26:18,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1579835560, now seen corresponding path program 5 times [2018-04-11 11:26:18,133 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:18,133 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:18,133 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:18,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:18,134 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:18,203 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7993 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 7658 trivial. 0 not checked. [2018-04-11 11:26:18,707 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:18,707 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 [2018-04-11 11:26:18,712 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-11 11:26:22,008 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-04-11 11:26:22,008 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:22,017 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7993 backedges. 4046 proven. 128 refuted. 0 times theorem prover too weak. 3819 trivial. 0 not checked. [2018-04-11 11:26:22,359 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:22,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2018-04-11 11:26:22,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-04-11 11:26:22,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-04-11 11:26:22,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2018-04-11 11:26:22,360 INFO L87 Difference]: Start difference. First operand 317 states and 345 transitions. Second operand 27 states. [2018-04-11 11:26:22,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:22,939 INFO L93 Difference]: Finished difference Result 369 states and 396 transitions. [2018-04-11 11:26:22,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-11 11:26:22,939 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 624 [2018-04-11 11:26:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:22,940 INFO L225 Difference]: With dead ends: 369 [2018-04-11 11:26:22,941 INFO L226 Difference]: Without dead ends: 353 [2018-04-11 11:26:22,942 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=1929, Unknown=0, NotChecked=0, Total=2256 [2018-04-11 11:26:22,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-04-11 11:26:22,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 334. [2018-04-11 11:26:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-04-11 11:26:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 356 transitions. [2018-04-11 11:26:22,949 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 356 transitions. Word has length 624 [2018-04-11 11:26:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:22,949 INFO L459 AbstractCegarLoop]: Abstraction has 334 states and 356 transitions. [2018-04-11 11:26:22,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-04-11 11:26:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 356 transitions. [2018-04-11 11:26:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-04-11 11:26:22,956 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:22,956 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] [2018-04-11 11:26:22,956 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]=== [2018-04-11 11:26:22,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1723936527, now seen corresponding path program 6 times [2018-04-11 11:26:22,956 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:22,957 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:22,957 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:22,957 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:22,957 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:23,033 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10474 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 10067 trivial. 0 not checked. [2018-04-11 11:26:23,570 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:23,570 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 [2018-04-11 11:26:23,580 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-11 11:26:27,553 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-04-11 11:26:27,554 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:27,565 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10474 backedges. 2204 proven. 38 refuted. 0 times theorem prover too weak. 8232 trivial. 0 not checked. [2018-04-11 11:26:27,849 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:27,849 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-04-11 11:26:27,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-11 11:26:27,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-11 11:26:27,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-04-11 11:26:27,850 INFO L87 Difference]: Start difference. First operand 334 states and 356 transitions. Second operand 24 states. [2018-04-11 11:26:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:28,178 INFO L93 Difference]: Finished difference Result 534 states and 604 transitions. [2018-04-11 11:26:28,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-04-11 11:26:28,179 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 704 [2018-04-11 11:26:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:28,181 INFO L225 Difference]: With dead ends: 534 [2018-04-11 11:26:28,181 INFO L226 Difference]: Without dead ends: 525 [2018-04-11 11:26:28,182 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 [2018-04-11 11:26:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2018-04-11 11:26:28,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 357. [2018-04-11 11:26:28,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-04-11 11:26:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 388 transitions. [2018-04-11 11:26:28,187 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 388 transitions. Word has length 704 [2018-04-11 11:26:28,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:28,188 INFO L459 AbstractCegarLoop]: Abstraction has 357 states and 388 transitions. [2018-04-11 11:26:28,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-11 11:26:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 388 transitions. [2018-04-11 11:26:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-04-11 11:26:28,191 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:28,191 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] [2018-04-11 11:26:28,191 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]=== [2018-04-11 11:26:28,192 INFO L82 PathProgramCache]: Analyzing trace with hash 324361008, now seen corresponding path program 7 times [2018-04-11 11:26:28,192 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:28,192 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:28,192 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:28,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:28,192 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:28,244 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14684 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 14198 trivial. 0 not checked. [2018-04-11 11:26:29,095 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:29,095 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 [2018-04-11 11:26:29,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:29,317 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 14684 backedges. 8198 proven. 70 refuted. 0 times theorem prover too weak. 6416 trivial. 0 not checked. [2018-04-11 11:26:29,863 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:29,863 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 30 [2018-04-11 11:26:29,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-11 11:26:29,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-11 11:26:29,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2018-04-11 11:26:29,865 INFO L87 Difference]: Start difference. First operand 357 states and 388 transitions. Second operand 30 states. [2018-04-11 11:26:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:30,266 INFO L93 Difference]: Finished difference Result 876 states and 1019 transitions. [2018-04-11 11:26:30,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-04-11 11:26:30,266 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 814 [2018-04-11 11:26:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:30,271 INFO L225 Difference]: With dead ends: 876 [2018-04-11 11:26:30,271 INFO L226 Difference]: Without dead ends: 876 [2018-04-11 11:26:30,271 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=440, Invalid=1912, Unknown=0, NotChecked=0, Total=2352 [2018-04-11 11:26:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2018-04-11 11:26:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 414. [2018-04-11 11:26:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-04-11 11:26:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 450 transitions. [2018-04-11 11:26:30,286 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 450 transitions. Word has length 814 [2018-04-11 11:26:30,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:30,286 INFO L459 AbstractCegarLoop]: Abstraction has 414 states and 450 transitions. [2018-04-11 11:26:30,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-11 11:26:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 450 transitions. [2018-04-11 11:26:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-04-11 11:26:30,294 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:30,295 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] [2018-04-11 11:26:30,295 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]=== [2018-04-11 11:26:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash -362362842, now seen corresponding path program 8 times [2018-04-11 11:26:30,295 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:30,295 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:30,296 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:30,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:26:30,296 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:30,419 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 20144 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 19572 trivial. 0 not checked. [2018-04-11 11:26:31,724 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:31,724 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) [2018-04-11 11:26:31,732 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 11:26:31,968 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 11:26:31,968 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:31,978 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 20144 backedges. 9377 proven. 38 refuted. 0 times theorem prover too weak. 10729 trivial. 0 not checked. [2018-04-11 11:26:32,721 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:32,721 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2018-04-11 11:26:32,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-04-11 11:26:32,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-04-11 11:26:32,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2018-04-11 11:26:32,723 INFO L87 Difference]: Start difference. First operand 414 states and 450 transitions. Second operand 30 states. [2018-04-11 11:26:33,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:33,253 INFO L93 Difference]: Finished difference Result 456 states and 491 transitions. [2018-04-11 11:26:33,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-04-11 11:26:33,255 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 931 [2018-04-11 11:26:33,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:33,257 INFO L225 Difference]: With dead ends: 456 [2018-04-11 11:26:33,257 INFO L226 Difference]: Without dead ends: 440 [2018-04-11 11:26:33,258 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 [2018-04-11 11:26:33,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2018-04-11 11:26:33,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 413. [2018-04-11 11:26:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-04-11 11:26:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 441 transitions. [2018-04-11 11:26:33,265 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 441 transitions. Word has length 931 [2018-04-11 11:26:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:33,266 INFO L459 AbstractCegarLoop]: Abstraction has 413 states and 441 transitions. [2018-04-11 11:26:33,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-04-11 11:26:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 441 transitions. [2018-04-11 11:26:33,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2018-04-11 11:26:33,274 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:33,275 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] [2018-04-11 11:26:33,275 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]=== [2018-04-11 11:26:33,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1709282318, now seen corresponding path program 9 times [2018-04-11 11:26:33,275 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:33,275 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:33,276 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:33,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:33,276 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:33,370 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 24702 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 24037 trivial. 0 not checked. [2018-04-11 11:26:34,796 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:34,796 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 [2018-04-11 11:26:34,801 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 11:26:35,143 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-04-11 11:26:35,143 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:35,151 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 24702 backedges. 7406 proven. 327 refuted. 0 times theorem prover too weak. 16969 trivial. 0 not checked. [2018-04-11 11:26:35,762 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:35,762 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 37 [2018-04-11 11:26:35,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-04-11 11:26:35,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-04-11 11:26:35,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1109, Unknown=0, NotChecked=0, Total=1332 [2018-04-11 11:26:35,763 INFO L87 Difference]: Start difference. First operand 413 states and 441 transitions. Second operand 37 states. [2018-04-11 11:26:36,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:36,508 INFO L93 Difference]: Finished difference Result 741 states and 848 transitions. [2018-04-11 11:26:36,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-04-11 11:26:36,508 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 1022 [2018-04-11 11:26:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:36,510 INFO L225 Difference]: With dead ends: 741 [2018-04-11 11:26:36,510 INFO L226 Difference]: Without dead ends: 732 [2018-04-11 11:26:36,511 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1003 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=553, Invalid=3107, Unknown=0, NotChecked=0, Total=3660 [2018-04-11 11:26:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2018-04-11 11:26:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 464. [2018-04-11 11:26:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2018-04-11 11:26:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 506 transitions. [2018-04-11 11:26:36,518 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 506 transitions. Word has length 1022 [2018-04-11 11:26:36,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:36,519 INFO L459 AbstractCegarLoop]: Abstraction has 464 states and 506 transitions. [2018-04-11 11:26:36,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-04-11 11:26:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 506 transitions. [2018-04-11 11:26:36,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1154 [2018-04-11 11:26:36,526 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:36,526 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] [2018-04-11 11:26:36,526 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]=== [2018-04-11 11:26:36,526 INFO L82 PathProgramCache]: Analyzing trace with hash 452446382, now seen corresponding path program 10 times [2018-04-11 11:26:36,527 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:36,527 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:36,527 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:36,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:36,527 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:36,603 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 32549 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 31784 trivial. 0 not checked. [2018-04-11 11:26:38,093 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:38,093 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 [2018-04-11 11:26:38,099 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-11 11:26:38,305 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-11 11:26:38,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:38,317 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 32549 backedges. 17085 proven. 102 refuted. 0 times theorem prover too weak. 15362 trivial. 0 not checked. [2018-04-11 11:26:38,889 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:38,889 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2018-04-11 11:26:38,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-11 11:26:38,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-11 11:26:38,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=946, Unknown=0, NotChecked=0, Total=1190 [2018-04-11 11:26:38,890 INFO L87 Difference]: Start difference. First operand 464 states and 506 transitions. Second operand 35 states. [2018-04-11 11:26:39,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:39,359 INFO L93 Difference]: Finished difference Result 1209 states and 1418 transitions. [2018-04-11 11:26:39,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-04-11 11:26:39,359 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 1153 [2018-04-11 11:26:39,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:39,363 INFO L225 Difference]: With dead ends: 1209 [2018-04-11 11:26:39,363 INFO L226 Difference]: Without dead ends: 1209 [2018-04-11 11:26:39,364 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=617, Invalid=2689, Unknown=0, NotChecked=0, Total=3306 [2018-04-11 11:26:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2018-04-11 11:26:39,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 527. [2018-04-11 11:26:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-04-11 11:26:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 574 transitions. [2018-04-11 11:26:39,380 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 574 transitions. Word has length 1153 [2018-04-11 11:26:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:39,381 INFO L459 AbstractCegarLoop]: Abstraction has 527 states and 574 transitions. [2018-04-11 11:26:39,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-11 11:26:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 574 transitions. [2018-04-11 11:26:39,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1294 [2018-04-11 11:26:39,394 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:39,395 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] [2018-04-11 11:26:39,395 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]=== [2018-04-11 11:26:39,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2142572569, now seen corresponding path program 11 times [2018-04-11 11:26:39,395 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:39,395 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:39,396 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:39,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:39,396 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:39,523 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:26:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 42453 backedges. 0 proven. 872 refuted. 0 times theorem prover too weak. 41581 trivial. 0 not checked. [2018-04-11 11:26:41,181 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:26:41,181 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 [2018-04-11 11:26:41,186 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-11 11:26:58,379 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-04-11 11:26:58,379 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:26:58,399 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:26:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 42453 backedges. 18458 proven. 92 refuted. 0 times theorem prover too weak. 23903 trivial. 0 not checked. [2018-04-11 11:26:58,987 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:26:58,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33 [2018-04-11 11:26:58,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-04-11 11:26:58,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-04-11 11:26:58,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2018-04-11 11:26:58,989 INFO L87 Difference]: Start difference. First operand 527 states and 574 transitions. Second operand 33 states. [2018-04-11 11:26:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:26:59,562 INFO L93 Difference]: Finished difference Result 722 states and 818 transitions. [2018-04-11 11:26:59,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-04-11 11:26:59,562 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1293 [2018-04-11 11:26:59,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:26:59,564 INFO L225 Difference]: With dead ends: 722 [2018-04-11 11:26:59,564 INFO L226 Difference]: Without dead ends: 722 [2018-04-11 11:26:59,565 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 1280 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2018-04-11 11:26:59,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2018-04-11 11:26:59,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 616. [2018-04-11 11:26:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2018-04-11 11:26:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 673 transitions. [2018-04-11 11:26:59,571 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 673 transitions. Word has length 1293 [2018-04-11 11:26:59,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:26:59,572 INFO L459 AbstractCegarLoop]: Abstraction has 616 states and 673 transitions. [2018-04-11 11:26:59,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-04-11 11:26:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 673 transitions. [2018-04-11 11:26:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1396 [2018-04-11 11:26:59,580 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:26:59,581 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] [2018-04-11 11:26:59,581 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]=== [2018-04-11 11:26:59,581 INFO L82 PathProgramCache]: Analyzing trace with hash 719366254, now seen corresponding path program 12 times [2018-04-11 11:26:59,581 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:26:59,581 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:26:59,582 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:59,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:26:59,582 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:26:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:26:59,738 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:27:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 49992 backedges. 0 proven. 986 refuted. 0 times theorem prover too weak. 49006 trivial. 0 not checked. [2018-04-11 11:27:01,700 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:27:01,700 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 [2018-04-11 11:27:01,705 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-11 11:28:29,789 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2018-04-11 11:28:29,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:28:29,818 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:28:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 49992 backedges. 6802 proven. 185 refuted. 0 times theorem prover too weak. 43005 trivial. 0 not checked. [2018-04-11 11:28:30,583 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:28:30,583 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 34 [2018-04-11 11:28:30,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-11 11:28:30,584 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-11 11:28:30,584 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2018-04-11 11:28:30,584 INFO L87 Difference]: Start difference. First operand 616 states and 673 transitions. Second operand 34 states. [2018-04-11 11:28:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:28:31,218 INFO L93 Difference]: Finished difference Result 1059 states and 1234 transitions. [2018-04-11 11:28:31,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-11 11:28:31,219 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 1395 [2018-04-11 11:28:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:28:31,221 INFO L225 Difference]: With dead ends: 1059 [2018-04-11 11:28:31,221 INFO L226 Difference]: Without dead ends: 1050 [2018-04-11 11:28:31,222 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 [2018-04-11 11:28:31,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2018-04-11 11:28:31,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 639. [2018-04-11 11:28:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2018-04-11 11:28:31,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 709 transitions. [2018-04-11 11:28:31,234 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 709 transitions. Word has length 1395 [2018-04-11 11:28:31,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:28:31,235 INFO L459 AbstractCegarLoop]: Abstraction has 639 states and 709 transitions. [2018-04-11 11:28:31,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-11 11:28:31,235 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 709 transitions. [2018-04-11 11:28:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1548 [2018-04-11 11:28:31,252 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:28:31,252 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] [2018-04-11 11:28:31,252 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]=== [2018-04-11 11:28:31,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1789902741, now seen corresponding path program 13 times [2018-04-11 11:28:31,253 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:28:31,253 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:28:31,254 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:28:31,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:28:31,254 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:28:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:28:31,389 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:28:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 63136 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 62029 trivial. 0 not checked. [2018-04-11 11:28:33,811 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:28:33,811 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 [2018-04-11 11:28:33,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:28:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:28:34,073 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:28:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 63136 backedges. 31434 proven. 140 refuted. 0 times theorem prover too weak. 31562 trivial. 0 not checked. [2018-04-11 11:28:34,851 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:28:34,851 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2018-04-11 11:28:34,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-11 11:28:34,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-11 11:28:34,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1239, Unknown=0, NotChecked=0, Total=1560 [2018-04-11 11:28:34,853 INFO L87 Difference]: Start difference. First operand 639 states and 709 transitions. Second operand 40 states. [2018-04-11 11:28:35,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:28:35,411 INFO L93 Difference]: Finished difference Result 1589 states and 1880 transitions. [2018-04-11 11:28:35,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-04-11 11:28:35,411 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1547 [2018-04-11 11:28:35,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:28:35,419 INFO L225 Difference]: With dead ends: 1589 [2018-04-11 11:28:35,419 INFO L226 Difference]: Without dead ends: 1589 [2018-04-11 11:28:35,420 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1594 GetRequests, 1529 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=825, Invalid=3597, Unknown=0, NotChecked=0, Total=4422 [2018-04-11 11:28:35,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2018-04-11 11:28:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 708. [2018-04-11 11:28:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2018-04-11 11:28:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 783 transitions. [2018-04-11 11:28:35,441 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 783 transitions. Word has length 1547 [2018-04-11 11:28:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:28:35,441 INFO L459 AbstractCegarLoop]: Abstraction has 708 states and 783 transitions. [2018-04-11 11:28:35,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-11 11:28:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 783 transitions. [2018-04-11 11:28:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2018-04-11 11:28:35,461 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:28:35,494 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] [2018-04-11 11:28:35,494 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]=== [2018-04-11 11:28:35,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2068100029, now seen corresponding path program 14 times [2018-04-11 11:28:35,495 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:28:35,495 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:28:35,495 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:28:35,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 11:28:35,496 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:28:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:28:35,673 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:28:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 79405 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 78170 trivial. 0 not checked. [2018-04-11 11:28:38,653 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:28:38,653 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 [2018-04-11 11:28:38,659 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 11:28:38,954 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 11:28:38,954 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:28:38,967 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:28:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 79405 backedges. 33239 proven. 87 refuted. 0 times theorem prover too weak. 46079 trivial. 0 not checked. [2018-04-11 11:28:39,840 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:28:39,841 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 40 [2018-04-11 11:28:39,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-11 11:28:39,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-11 11:28:39,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2018-04-11 11:28:39,842 INFO L87 Difference]: Start difference. First operand 708 states and 783 transitions. Second operand 40 states. [2018-04-11 11:28:40,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:28:40,438 INFO L93 Difference]: Finished difference Result 759 states and 835 transitions. [2018-04-11 11:28:40,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-04-11 11:28:40,438 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 1710 [2018-04-11 11:28:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:28:40,440 INFO L225 Difference]: With dead ends: 759 [2018-04-11 11:28:40,440 INFO L226 Difference]: Without dead ends: 743 [2018-04-11 11:28:40,440 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 1758 GetRequests, 1693 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=828, Invalid=3594, Unknown=0, NotChecked=0, Total=4422 [2018-04-11 11:28:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2018-04-11 11:28:40,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 707. [2018-04-11 11:28:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2018-04-11 11:28:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 770 transitions. [2018-04-11 11:28:40,448 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 770 transitions. Word has length 1710 [2018-04-11 11:28:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:28:40,449 INFO L459 AbstractCegarLoop]: Abstraction has 707 states and 770 transitions. [2018-04-11 11:28:40,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-11 11:28:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 770 transitions. [2018-04-11 11:28:40,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1824 [2018-04-11 11:28:40,471 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:28:40,519 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] [2018-04-11 11:28:40,519 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]=== [2018-04-11 11:28:40,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1044979833, now seen corresponding path program 15 times [2018-04-11 11:28:40,519 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:28:40,519 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:28:40,520 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:28:40,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:28:40,520 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:28:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:28:40,693 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:28:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 90994 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 89624 trivial. 0 not checked. [2018-04-11 11:28:44,121 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:28:44,121 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 [2018-04-11 11:28:44,126 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 11:28:45,781 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-04-11 11:28:45,782 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:28:45,792 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:28:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 90994 backedges. 10671 proven. 119 refuted. 0 times theorem prover too weak. 80204 trivial. 0 not checked. [2018-04-11 11:28:46,703 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:28:46,704 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16] total 35 [2018-04-11 11:28:46,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-11 11:28:46,705 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-11 11:28:46,705 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2018-04-11 11:28:46,705 INFO L87 Difference]: Start difference. First operand 707 states and 770 transitions. Second operand 35 states. [2018-04-11 11:28:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:28:47,103 INFO L93 Difference]: Finished difference Result 1325 states and 1559 transitions. [2018-04-11 11:28:47,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-04-11 11:28:47,103 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 1823 [2018-04-11 11:28:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:28:47,109 INFO L225 Difference]: With dead ends: 1325 [2018-04-11 11:28:47,109 INFO L226 Difference]: Without dead ends: 1316 [2018-04-11 11:28:47,109 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 [2018-04-11 11:28:47,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2018-04-11 11:28:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 730. [2018-04-11 11:28:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2018-04-11 11:28:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 809 transitions. [2018-04-11 11:28:47,128 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 809 transitions. Word has length 1823 [2018-04-11 11:28:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:28:47,130 INFO L459 AbstractCegarLoop]: Abstraction has 730 states and 809 transitions. [2018-04-11 11:28:47,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-11 11:28:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 809 transitions. [2018-04-11 11:28:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1997 [2018-04-11 11:28:47,157 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:28:47,157 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] [2018-04-11 11:28:47,158 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]=== [2018-04-11 11:28:47,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1767490169, now seen corresponding path program 16 times [2018-04-11 11:28:47,158 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:28:47,158 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:28:47,159 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:28:47,159 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:28:47,159 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:28:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:28:47,353 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:28:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 111410 backedges. 0 proven. 1512 refuted. 0 times theorem prover too weak. 109898 trivial. 0 not checked. [2018-04-11 11:28:51,461 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:28:51,476 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 [2018-04-11 11:28:51,481 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-11 11:28:51,813 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-11 11:28:51,813 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 11:28:51,828 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 11:28:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 111410 backedges. 53084 proven. 184 refuted. 0 times theorem prover too weak. 58142 trivial. 0 not checked. [2018-04-11 11:28:52,949 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 11:28:52,949 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2018-04-11 11:28:52,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-04-11 11:28:52,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-04-11 11:28:52,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=1571, Unknown=0, NotChecked=0, Total=1980 [2018-04-11 11:28:52,951 INFO L87 Difference]: Start difference. First operand 730 states and 809 transitions. Second operand 45 states. [2018-04-11 11:28:53,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 11:28:53,472 INFO L93 Difference]: Finished difference Result 1992 states and 2373 transitions. [2018-04-11 11:28:53,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-04-11 11:28:53,472 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 1996 [2018-04-11 11:28:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 11:28:53,479 INFO L225 Difference]: With dead ends: 1992 [2018-04-11 11:28:53,479 INFO L226 Difference]: Without dead ends: 1992 [2018-04-11 11:28:53,480 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 2050 GetRequests, 1976 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1064, Invalid=4636, Unknown=0, NotChecked=0, Total=5700 [2018-04-11 11:28:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2018-04-11 11:28:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 805. [2018-04-11 11:28:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2018-04-11 11:28:53,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 889 transitions. [2018-04-11 11:28:53,501 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 889 transitions. Word has length 1996 [2018-04-11 11:28:53,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 11:28:53,501 INFO L459 AbstractCegarLoop]: Abstraction has 805 states and 889 transitions. [2018-04-11 11:28:53,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-04-11 11:28:53,502 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 889 transitions. [2018-04-11 11:28:53,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2183 [2018-04-11 11:28:53,533 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 11:28:53,534 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] [2018-04-11 11:28:53,534 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]=== [2018-04-11 11:28:53,534 INFO L82 PathProgramCache]: Analyzing trace with hash 959573400, now seen corresponding path program 17 times [2018-04-11 11:28:53,534 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 11:28:53,535 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 11:28:53,535 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:28:53,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 11:28:53,535 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 11:28:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 11:28:53,716 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 11:28:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 136310 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 134649 trivial. 0 not checked. [2018-04-11 11:28:58,777 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 11:28:58,777 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 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 [2018-04-11 11:28:58,783 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown