java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-35b68b2 [2018-04-06 21:09:39,826 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-06 21:09:39,828 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-06 21:09:39,842 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-06 21:09:39,842 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-06 21:09:39,843 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-06 21:09:39,844 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-06 21:09:39,845 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-06 21:09:39,846 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-06 21:09:39,847 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-06 21:09:39,848 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-06 21:09:39,848 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-06 21:09:39,849 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-06 21:09:39,849 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-06 21:09:39,850 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-06 21:09:39,852 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-06 21:09:39,854 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-06 21:09:39,856 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-06 21:09:39,857 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-06 21:09:39,859 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-06 21:09:39,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-06 21:09:39,861 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-06 21:09:39,862 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-06 21:09:39,863 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-06 21:09:39,863 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-06 21:09:39,865 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-06 21:09:39,865 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-06 21:09:39,866 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-06 21:09:39,866 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-06 21:09:39,867 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-06 21:09:39,867 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-06 21:09:39,868 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-06 21:09:39,892 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-06 21:09:39,893 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-06 21:09:39,893 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-06 21:09:39,893 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-06 21:09:39,894 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-06 21:09:39,894 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-06 21:09:39,894 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-06 21:09:39,894 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-06 21:09:39,895 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-06 21:09:39,895 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-06 21:09:39,895 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-06 21:09:39,895 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-06 21:09:39,896 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-06 21:09:39,896 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-06 21:09:39,896 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-06 21:09:39,896 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-06 21:09:39,897 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-06 21:09:39,897 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-06 21:09:39,897 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-06 21:09:39,897 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-06 21:09:39,897 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-06 21:09:39,898 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-06 21:09:39,898 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-06 21:09:39,898 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-06 21:09:39,898 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-06 21:09:39,898 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-06 21:09:39,899 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-06 21:09:39,899 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-06 21:09:39,899 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-06 21:09:39,899 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-06 21:09:39,899 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-06 21:09:39,900 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-06 21:09:39,900 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:09:39,900 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-06 21:09:39,901 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-06 21:09:39,901 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-06 21:09:39,901 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-06 21:09:39,902 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-06 21:09:39,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-06 21:09:39,951 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-06 21:09:39,955 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-06 21:09:39,956 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-06 21:09:39,957 INFO L276 PluginConnector]: CDTParser initialized [2018-04-06 21:09:39,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-04-06 21:09:40,303 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGe5653d6a9 [2018-04-06 21:09:40,427 INFO L287 CDTParser]: IsIndexed: true [2018-04-06 21:09:40,427 INFO L288 CDTParser]: Found 1 translation units. [2018-04-06 21:09:40,428 INFO L168 CDTParser]: Scanning ArraysOfVariableLength2_false-valid-deref-write.c [2018-04-06 21:09:40,429 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-06 21:09:40,429 INFO L215 ultiparseSymbolTable]: [2018-04-06 21:09:40,429 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-06 21:09:40,430 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in ArraysOfVariableLength2_false-valid-deref-write.c [2018-04-06 21:09:40,430 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__foo ('foo') in ArraysOfVariableLength2_false-valid-deref-write.c [2018-04-06 21:09:40,430 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__bar ('bar') in ArraysOfVariableLength2_false-valid-deref-write.c [2018-04-06 21:09:40,430 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-06 21:09:40,430 INFO L233 ultiparseSymbolTable]: [2018-04-06 21:09:40,445 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGe5653d6a9 [2018-04-06 21:09:40,450 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-06 21:09:40,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-06 21:09:40,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-06 21:09:40,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-06 21:09:40,459 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-06 21:09:40,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 09:09:40" (1/1) ... [2018-04-06 21:09:40,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2370d8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40, skipping insertion in model container [2018-04-06 21:09:40,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 09:09:40" (1/1) ... [2018-04-06 21:09:40,476 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-06 21:09:40,489 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-06 21:09:40,631 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-06 21:09:40,658 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-06 21:09:40,663 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 10 non ball SCCs. Number of states in SCCs 10. [2018-04-06 21:09:40,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40 WrapperNode [2018-04-06 21:09:40,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-06 21:09:40,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-06 21:09:40,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-06 21:09:40,675 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-06 21:09:40,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40" (1/1) ... [2018-04-06 21:09:40,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40" (1/1) ... [2018-04-06 21:09:40,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40" (1/1) ... [2018-04-06 21:09:40,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40" (1/1) ... [2018-04-06 21:09:40,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40" (1/1) ... [2018-04-06 21:09:40,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40" (1/1) ... [2018-04-06 21:09:40,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40" (1/1) ... [2018-04-06 21:09:40,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-06 21:09:40,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-06 21:09:40,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-06 21:09:40,710 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-06 21:09:40,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-06 21:09:40,762 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-06 21:09:40,762 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-06 21:09:40,762 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__bar [2018-04-06 21:09:40,762 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__foo [2018-04-06 21:09:40,763 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-06 21:09:40,763 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__bar [2018-04-06 21:09:40,763 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-06 21:09:40,763 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__foo [2018-04-06 21:09:40,763 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-06 21:09:40,763 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-06 21:09:40,764 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-06 21:09:40,764 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-06 21:09:40,764 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-06 21:09:40,764 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-06 21:09:40,764 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-06 21:09:41,122 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-06 21:09:41,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:09:41 BoogieIcfgContainer [2018-04-06 21:09:41,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-06 21:09:41,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-06 21:09:41,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-06 21:09:41,128 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-06 21:09:41,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 09:09:40" (1/3) ... [2018-04-06 21:09:41,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfd3d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:09:41, skipping insertion in model container [2018-04-06 21:09:41,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:09:40" (2/3) ... [2018-04-06 21:09:41,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfd3d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:09:41, skipping insertion in model container [2018-04-06 21:09:41,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:09:41" (3/3) ... [2018-04-06 21:09:41,131 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-write.c [2018-04-06 21:09:41,139 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-06 21:09:41,145 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-04-06 21:09:41,183 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-06 21:09:41,184 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-06 21:09:41,184 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-06 21:09:41,184 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-06 21:09:41,184 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-06 21:09:41,184 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-06 21:09:41,185 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-06 21:09:41,185 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-06 21:09:41,185 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-06 21:09:41,186 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-06 21:09:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2018-04-06 21:09:41,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-04-06 21:09:41,205 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:09:41,206 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:09:41,206 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:09:41,209 INFO L82 PathProgramCache]: Analyzing trace with hash 598866422, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:09:41,221 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:09:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:09:41,260 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:09:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:09:41,276 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:09:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:09:41,313 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 21:09:41,313 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-04-06 21:09:41,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-04-06 21:09:41,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-04-06 21:09:41,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-06 21:09:41,334 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2018-04-06 21:09:41,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:09:41,368 INFO L93 Difference]: Finished difference Result 169 states and 189 transitions. [2018-04-06 21:09:41,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-04-06 21:09:41,370 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-04-06 21:09:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:09:41,379 INFO L225 Difference]: With dead ends: 169 [2018-04-06 21:09:41,379 INFO L226 Difference]: Without dead ends: 86 [2018-04-06 21:09:41,384 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-06 21:09:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-04-06 21:09:41,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-04-06 21:09:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-04-06 21:09:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2018-04-06 21:09:41,428 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 14 [2018-04-06 21:09:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:09:41,429 INFO L459 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2018-04-06 21:09:41,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-04-06 21:09:41,429 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2018-04-06 21:09:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-04-06 21:09:41,430 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:09:41,430 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:09:41,430 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:09:41,431 INFO L82 PathProgramCache]: Analyzing trace with hash 883394078, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:09:41,438 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:09:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:09:41,457 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:09:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:09:41,500 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:09:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:09:41,561 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 21:09:41,561 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-04-06 21:09:41,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-06 21:09:41,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-06 21:09:41,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-06 21:09:41,563 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 4 states. [2018-04-06 21:09:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:09:41,615 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-04-06 21:09:41,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-06 21:09:41,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-04-06 21:09:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:09:41,619 INFO L225 Difference]: With dead ends: 110 [2018-04-06 21:09:41,619 INFO L226 Difference]: Without dead ends: 93 [2018-04-06 21:09:41,620 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-06 21:09:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-04-06 21:09:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2018-04-06 21:09:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-04-06 21:09:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2018-04-06 21:09:41,635 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 15 [2018-04-06 21:09:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:09:41,635 INFO L459 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2018-04-06 21:09:41,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-06 21:09:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2018-04-06 21:09:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-06 21:09:41,636 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:09:41,637 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] [2018-04-06 21:09:41,637 INFO L408 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:09:41,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1944482040, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:09:41,650 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:09:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:09:41,679 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:09:41,704 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 [2018-04-06 21:09:41,706 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-06 21:09:41,708 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-06 21:09:41,708 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-06 21:09:41,734 INFO L700 Elim1Store]: detected not equals via solver [2018-04-06 21:09:41,735 INFO L700 Elim1Store]: detected not equals via solver [2018-04-06 21:09:41,736 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 0 case distinctions, treesize of input 17 treesize of output 21 [2018-04-06 21:09:41,737 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-06 21:09:41,754 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-06 21:09:41,754 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2018-04-06 21:09:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:09:41,783 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:09:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:09:41,887 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 21:09:41,887 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-06 21:09:41,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-06 21:09:41,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-06 21:09:41,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-04-06 21:09:41,888 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 9 states. [2018-04-06 21:09:42,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:09:42,048 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-04-06 21:09:42,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-06 21:09:42,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-04-06 21:09:42,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:09:42,050 INFO L225 Difference]: With dead ends: 85 [2018-04-06 21:09:42,051 INFO L226 Difference]: Without dead ends: 83 [2018-04-06 21:09:42,051 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-04-06 21:09:42,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-04-06 21:09:42,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-04-06 21:09:42,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-04-06 21:09:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-04-06 21:09:42,061 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 21 [2018-04-06 21:09:42,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:09:42,062 INFO L459 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-04-06 21:09:42,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-06 21:09:42,062 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-04-06 21:09:42,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-06 21:09:42,063 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:09:42,063 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] [2018-04-06 21:09:42,063 INFO L408 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:09:42,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1944482041, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:09:42,074 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:09:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:09:42,095 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:09:42,100 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 [2018-04-06 21:09:42,101 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-06 21:09:42,109 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 [2018-04-06 21:09:42,109 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-06 21:09:42,115 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-06 21:09:42,115 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-06 21:09:42,164 INFO L700 Elim1Store]: detected not equals via solver [2018-04-06 21:09:42,166 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 [2018-04-06 21:09:42,166 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-06 21:09:42,185 INFO L700 Elim1Store]: detected not equals via solver [2018-04-06 21:09:42,186 INFO L700 Elim1Store]: detected not equals via solver [2018-04-06 21:09:42,187 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 [2018-04-06 21:09:42,187 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-06 21:09:42,194 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. [2018-04-06 21:09:42,195 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:20 [2018-04-06 21:09:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:09:42,264 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:09:44,483 WARN L148 SmtUtils]: Spent 2033ms on a formula simplification that was a NOOP. DAG size: 26 [2018-04-06 21:09:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:09:44,657 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 21:09:44,657 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2018-04-06 21:09:44,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-06 21:09:44,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-06 21:09:44,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-04-06 21:09:44,658 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 12 states. [2018-04-06 21:09:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:09:44,971 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2018-04-06 21:09:44,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-06 21:09:44,971 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-04-06 21:09:44,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:09:44,974 INFO L225 Difference]: With dead ends: 137 [2018-04-06 21:09:44,974 INFO L226 Difference]: Without dead ends: 136 [2018-04-06 21:09:44,975 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2018-04-06 21:09:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-04-06 21:09:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 114. [2018-04-06 21:09:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-04-06 21:09:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2018-04-06 21:09:44,990 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 21 [2018-04-06 21:09:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:09:44,990 INFO L459 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2018-04-06 21:09:44,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-06 21:09:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2018-04-06 21:09:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-04-06 21:09:44,991 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:09:44,991 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] [2018-04-06 21:09:44,991 INFO L408 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:09:44,992 INFO L82 PathProgramCache]: Analyzing trace with hash 149401087, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:09:45,002 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:09:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:09:45,022 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:09:45,025 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 [2018-04-06 21:09:45,026 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-06 21:09:45,027 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-06 21:09:45,028 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-06 21:09:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:09:45,030 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:09:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:09:45,079 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 21:09:45,079 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-04-06 21:09:45,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-06 21:09:45,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-06 21:09:45,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-06 21:09:45,080 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand 3 states. [2018-04-06 21:09:45,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:09:45,101 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2018-04-06 21:09:45,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-06 21:09:45,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-04-06 21:09:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:09:45,102 INFO L225 Difference]: With dead ends: 114 [2018-04-06 21:09:45,103 INFO L226 Difference]: Without dead ends: 113 [2018-04-06 21:09:45,103 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-06 21:09:45,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-04-06 21:09:45,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-04-06 21:09:45,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-04-06 21:09:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2018-04-06 21:09:45,115 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 22 [2018-04-06 21:09:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:09:45,116 INFO L459 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2018-04-06 21:09:45,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-06 21:09:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2018-04-06 21:09:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-04-06 21:09:45,117 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:09:45,117 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] [2018-04-06 21:09:45,117 INFO L408 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr2RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr1RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__fooErr3RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr0RequiresViolation, __U_MULTI_fArraysOfVariableLength__false_valid_deref_write_c__barErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:09:45,117 INFO L82 PathProgramCache]: Analyzing trace with hash 149401088, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:09:45,126 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:09:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-06 21:09:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-06 21:09:45,196 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-06 21:09:45,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 09:09:45 BoogieIcfgContainer [2018-04-06 21:09:45,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-06 21:09:45,217 INFO L168 Benchmark]: Toolchain (without parser) took 4766.70 ms. Allocated memory was 304.6 MB in the beginning and 483.4 MB in the end (delta: 178.8 MB). Free memory was 246.2 MB in the beginning and 367.4 MB in the end (delta: -121.3 MB). Peak memory consumption was 57.5 MB. Max. memory is 5.3 GB. [2018-04-06 21:09:45,218 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 304.6 MB. Free memory is still 266.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-06 21:09:45,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.39 ms. Allocated memory is still 304.6 MB. Free memory was 246.2 MB in the beginning and 236.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-04-06 21:09:45,219 INFO L168 Benchmark]: Boogie Preprocessor took 34.27 ms. Allocated memory is still 304.6 MB. Free memory was 236.0 MB in the beginning and 234.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-04-06 21:09:45,220 INFO L168 Benchmark]: RCFGBuilder took 413.79 ms. Allocated memory was 304.6 MB in the beginning and 459.8 MB in the end (delta: 155.2 MB). Free memory was 234.0 MB in the beginning and 421.3 MB in the end (delta: -187.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 5.3 GB. [2018-04-06 21:09:45,220 INFO L168 Benchmark]: TraceAbstraction took 4092.13 ms. Allocated memory was 459.8 MB in the beginning and 483.4 MB in the end (delta: 23.6 MB). Free memory was 421.3 MB in the beginning and 367.4 MB in the end (delta: 53.8 MB). Peak memory consumption was 77.4 MB. Max. memory is 5.3 GB. [2018-04-06 21:09:45,223 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 304.6 MB. Free memory is still 266.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 221.39 ms. Allocated memory is still 304.6 MB. Free memory was 246.2 MB in the beginning and 236.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.27 ms. Allocated memory is still 304.6 MB. Free memory was 236.0 MB in the beginning and 234.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 413.79 ms. Allocated memory was 304.6 MB in the beginning and 459.8 MB in the end (delta: 155.2 MB). Free memory was 234.0 MB in the beginning and 421.3 MB in the end (delta: -187.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4092.13 ms. Allocated memory was 459.8 MB in the beginning and 483.4 MB in the end (delta: 23.6 MB). Free memory was 421.3 MB in the beginning and 367.4 MB in the end (delta: 53.8 MB). Peak memory consumption was 77.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L32] FCALL int i, b[100]; VAL [b={8:0}] [L33] i = 0 VAL [b={8:0}, i=0] [L33] COND TRUE i < 100 VAL [b={8:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={8:0}] [L21] FCALL int a[n], i; VAL [\old(n)=0, \old(size)=1, a={9:0}, b={8:0}, b={8:0}, n=0, size=1] [L21] int a[n], i; VAL [\old(n)=0, \old(size)=1, a={9:0}, b={8:0}, b={8:0}, n=0, size=1] [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={9:0}, b={8:0}, b={8:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={9:0}, b={8:0}, b={8:0}, i=0, n=0, size=1] [L23] EXPR, FCALL b[i] VAL [\old(n)=0, \old(size)=1, a={9:0}, b={8:0}, b={8:0}, b[i]=6, i=0, n=0, size=1] [L23] FCALL a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 89 locations, 11 error locations. UNSAFE Result, 4.0s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 401 SDtfs, 372 SDslu, 709 SDs, 0 SdLazy, 292 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 176 ConstructedInterpolants, 26 QuantifiedInterpolants, 20112 SizeOfPredicates, 14 NumberOfNonLiveVariables, 315 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-06_21-09-45-230.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-06_21-09-45-230.csv Received shutdown request...