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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 23:32:40,577 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 23:32:40,580 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 23:32:40,594 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 23:32:40,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 23:32:40,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 23:32:40,597 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 23:32:40,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 23:32:40,600 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 23:32:40,600 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 23:32:40,601 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 23:32:40,601 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 23:32:40,602 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 23:32:40,602 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 23:32:40,603 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 23:32:40,605 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 23:32:40,607 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 23:32:40,609 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 23:32:40,611 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 23:32:40,612 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 23:32:40,614 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-28 23:32:40,615 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-28 23:32:40,615 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-28 23:32:40,616 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-28 23:32:40,617 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-28 23:32:40,618 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-28 23:32:40,618 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-28 23:32:40,619 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-28 23:32:40,619 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-28 23:32:40,619 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 23:32:40,620 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 23:32:40,620 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-28 23:32:40,630 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 23:32:40,630 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 23:32:40,631 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 23:32:40,631 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 23:32:40,631 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 23:32:40,632 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 23:32:40,632 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 23:32:40,633 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 23:32:40,633 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 23:32:40,633 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 23:32:40,633 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 23:32:40,633 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 23:32:40,633 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 23:32:40,634 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 23:32:40,634 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 23:32:40,634 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 23:32:40,634 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 23:32:40,634 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 23:32:40,635 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 23:32:40,635 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 23:32:40,635 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 23:32:40,635 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 23:32:40,635 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 23:32:40,635 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 23:32:40,636 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 23:32:40,636 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 23:32:40,636 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 23:32:40,636 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 23:32:40,636 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 23:32:40,637 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 23:32:40,637 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 23:32:40,637 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 23:32:40,638 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 23:32:40,638 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 23:32:40,673 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 23:32:40,686 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 23:32:40,691 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 23:32:40,693 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 23:32:40,693 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 23:32:40,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-01-28 23:32:40,872 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 23:32:40,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-28 23:32:40,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 23:32:40,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 23:32:40,888 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 23:32:40,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:32:40" (1/1) ... [2018-01-28 23:32:40,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fea89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:40, skipping insertion in model container [2018-01-28 23:32:40,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:32:40" (1/1) ... [2018-01-28 23:32:40,912 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 23:32:40,954 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 23:32:41,075 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 23:32:41,089 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 23:32:41,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:41 WrapperNode [2018-01-28 23:32:41,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 23:32:41,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 23:32:41,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 23:32:41,116 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 23:32:41,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:41" (1/1) ... [2018-01-28 23:32:41,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:41" (1/1) ... [2018-01-28 23:32:41,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:41" (1/1) ... [2018-01-28 23:32:41,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:41" (1/1) ... [2018-01-28 23:32:41,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:41" (1/1) ... [2018-01-28 23:32:41,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:41" (1/1) ... [2018-01-28 23:32:41,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:41" (1/1) ... [2018-01-28 23:32:41,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 23:32:41,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 23:32:41,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 23:32:41,149 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 23:32:41,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:41" (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 [2018-01-28 23:32:41,197 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 23:32:41,198 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 23:32:41,198 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-01-28 23:32:41,198 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 23:32:41,198 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-28 23:32:41,198 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-28 23:32:41,198 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 23:32:41,198 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 23:32:41,198 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 23:32:41,198 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-28 23:32:41,199 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-01-28 23:32:41,199 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 23:32:41,199 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 23:32:41,199 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 23:32:41,371 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 23:32:41,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:32:41 BoogieIcfgContainer [2018-01-28 23:32:41,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 23:32:41,372 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-28 23:32:41,372 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-28 23:32:41,373 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-28 23:32:41,375 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:32:41" (1/1) ... [2018-01-28 23:32:41,382 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-28 23:32:41,383 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-28 23:32:41,383 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-28 23:32:41,434 INFO L218 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-28 23:32:41,492 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-28 23:32:46,147 INFO L311 AbstractInterpreter]: Visited 47 different actions 121 times. Merged at 24 different actions 46 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-01-28 23:32:46,149 INFO L226 apSepIcfgTransformer]: finished equality analysis [2018-01-28 23:32:46,199 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 2 [2018-01-28 23:32:46,200 INFO L238 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-28 23:32:46,200 INFO L239 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-28 23:32:46,200 INFO L241 apSepIcfgTransformer]: select infos: Set: ((select |v_#memory_int_5| v_main_~nondetString1~4.base_2), at (SUMMARY for call write~int(0, ~nondetString1~4.base, ~nondetString1~4.offset + (~length1~4 - 1) * 1, 1); srcloc: L554)) ((select (select |v_#memory_int_1| v_cstrlen_~s~2.base_3) v_cstrlen_~s~2.offset_3), at (SUMMARY for call #t~mem1 := read~int(~s~2.base, ~s~2.offset, 1); srcloc: L544')) [2018-01-28 23:32:46,206 INFO L544 PartitionManager]: partitioning result: [2018-01-28 23:32:46,207 INFO L549 PartitionManager]: location blocks for array group [#memory_int] [2018-01-28 23:32:46,207 INFO L558 PartitionManager]: at dimension 0 [2018-01-28 23:32:46,207 INFO L559 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-01-28 23:32:46,207 INFO L560 PartitionManager]: # location blocks :1 [2018-01-28 23:32:46,207 INFO L558 PartitionManager]: at dimension 1 [2018-01-28 23:32:46,208 INFO L559 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-01-28 23:32:46,208 INFO L560 PartitionManager]: # location blocks :1 [2018-01-28 23:32:46,209 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-28 23:32:46,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 28.01 11:32:46 BasicIcfg [2018-01-28 23:32:46,224 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-28 23:32:46,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 23:32:46,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 23:32:46,228 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 23:32:46,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 11:32:40" (1/4) ... [2018-01-28 23:32:46,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdd94cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:32:46, skipping insertion in model container [2018-01-28 23:32:46,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:32:41" (2/4) ... [2018-01-28 23:32:46,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdd94cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:32:46, skipping insertion in model container [2018-01-28 23:32:46,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:32:41" (3/4) ... [2018-01-28 23:32:46,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdd94cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:32:46, skipping insertion in model container [2018-01-28 23:32:46,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 28.01 11:32:46" (4/4) ... [2018-01-28 23:32:46,233 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-28 23:32:46,242 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 23:32:46,251 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-28 23:32:46,345 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 23:32:46,346 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 23:32:46,346 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 23:32:46,346 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 23:32:46,346 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 23:32:46,346 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 23:32:46,346 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 23:32:46,346 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 23:32:46,347 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 23:32:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-28 23:32:46,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-28 23:32:46,366 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 23:32:46,366 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 23:32:46,366 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 23:32:46,370 INFO L82 PathProgramCache]: Analyzing trace with hash 2110774640, now seen corresponding path program 1 times [2018-01-28 23:32:46,371 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 23:32:46,371 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 23:32:46,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:46,413 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 23:32:46,413 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 23:32:46,462 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 23:32:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 23:32:46,593 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 23:32:46,594 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 23:32:46,595 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 23:32:46,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 23:32:46,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 23:32:46,604 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2018-01-28 23:32:46,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 23:32:46,687 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-01-28 23:32:46,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 23:32:46,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-01-28 23:32:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 23:32:46,701 INFO L225 Difference]: With dead ends: 54 [2018-01-28 23:32:46,701 INFO L226 Difference]: Without dead ends: 38 [2018-01-28 23:32:46,705 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-28 23:32:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-28 23:32:46,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-28 23:32:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-28 23:32:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-01-28 23:32:46,743 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 9 [2018-01-28 23:32:46,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 23:32:46,744 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-01-28 23:32:46,744 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 23:32:46,744 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-01-28 23:32:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-28 23:32:46,745 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 23:32:46,745 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 23:32:46,745 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 23:32:46,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2110774638, now seen corresponding path program 1 times [2018-01-28 23:32:46,746 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 23:32:46,746 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 23:32:46,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:46,747 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 23:32:46,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 23:32:46,754 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 23:32:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 23:32:46,801 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 23:32:46,801 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 23:32:46,803 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 23:32:46,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 23:32:46,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 23:32:46,804 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2018-01-28 23:32:46,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 23:32:46,860 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-01-28 23:32:46,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-28 23:32:46,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-28 23:32:46,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 23:32:46,862 INFO L225 Difference]: With dead ends: 38 [2018-01-28 23:32:46,862 INFO L226 Difference]: Without dead ends: 37 [2018-01-28 23:32:46,863 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 23:32:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-28 23:32:46,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-01-28 23:32:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-28 23:32:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-28 23:32:46,868 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 9 [2018-01-28 23:32:46,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 23:32:46,869 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-28 23:32:46,869 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 23:32:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-28 23:32:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-28 23:32:46,869 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 23:32:46,869 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 23:32:46,870 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 23:32:46,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1289726560, now seen corresponding path program 1 times [2018-01-28 23:32:46,870 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 23:32:46,870 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 23:32:46,871 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:46,871 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 23:32:46,871 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 23:32:46,883 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 23:32:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 23:32:47,005 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 23:32:47,006 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-28 23:32:47,006 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-28 23:32:47,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-28 23:32:47,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-28 23:32:47,007 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 9 states. [2018-01-28 23:32:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 23:32:47,168 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-01-28 23:32:47,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-28 23:32:47,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-01-28 23:32:47,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 23:32:47,171 INFO L225 Difference]: With dead ends: 49 [2018-01-28 23:32:47,172 INFO L226 Difference]: Without dead ends: 48 [2018-01-28 23:32:47,172 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-01-28 23:32:47,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-28 23:32:47,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2018-01-28 23:32:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-28 23:32:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-01-28 23:32:47,179 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 15 [2018-01-28 23:32:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 23:32:47,179 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-01-28 23:32:47,179 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-28 23:32:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-01-28 23:32:47,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-28 23:32:47,180 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 23:32:47,180 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 23:32:47,180 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 23:32:47,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1289726558, now seen corresponding path program 1 times [2018-01-28 23:32:47,181 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 23:32:47,181 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 23:32:47,182 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:47,182 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 23:32:47,182 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 23:32:47,188 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 23:32:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 23:32:47,226 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 23:32:47,226 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 23:32:47,226 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 23:32:47,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 23:32:47,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 23:32:47,227 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2018-01-28 23:32:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 23:32:47,284 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-01-28 23:32:47,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 23:32:47,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-01-28 23:32:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 23:32:47,285 INFO L225 Difference]: With dead ends: 39 [2018-01-28 23:32:47,285 INFO L226 Difference]: Without dead ends: 38 [2018-01-28 23:32:47,285 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-01-28 23:32:47,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-28 23:32:47,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-28 23:32:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-28 23:32:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-01-28 23:32:47,289 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 15 [2018-01-28 23:32:47,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 23:32:47,289 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-01-28 23:32:47,289 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 23:32:47,289 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-01-28 23:32:47,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-28 23:32:47,290 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 23:32:47,290 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 23:32:47,290 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 23:32:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1230559644, now seen corresponding path program 1 times [2018-01-28 23:32:47,290 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 23:32:47,290 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 23:32:47,291 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:47,291 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 23:32:47,291 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 23:32:47,305 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 23:32:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 23:32:47,343 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 23:32:47,343 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 23:32:47,343 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 23:32:47,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 23:32:47,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 23:32:47,344 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2018-01-28 23:32:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 23:32:47,386 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-01-28 23:32:47,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 23:32:47,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-28 23:32:47,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 23:32:47,387 INFO L225 Difference]: With dead ends: 38 [2018-01-28 23:32:47,387 INFO L226 Difference]: Without dead ends: 28 [2018-01-28 23:32:47,388 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 23:32:47,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-01-28 23:32:47,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-01-28 23:32:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-28 23:32:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-01-28 23:32:47,392 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2018-01-28 23:32:47,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 23:32:47,393 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-01-28 23:32:47,393 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 23:32:47,393 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-01-28 23:32:47,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-28 23:32:47,394 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 23:32:47,394 INFO L330 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 23:32:47,394 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-28 23:32:47,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1509086939, now seen corresponding path program 1 times [2018-01-28 23:32:47,395 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 23:32:47,395 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 23:32:47,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:47,396 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 23:32:47,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 23:32:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 23:32:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 23:32:47,445 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-28 23:32:47,448 INFO L84 mationBacktranslator]: Skipped ATE [189] [189] ULTIMATE.startENTRY-->L1: Formula: true InVars {} OutVars{#NULL.offset=|v_#NULL.offset_2|, #NULL.base=|v_#NULL.base_2|, #valid=|v_#valid_5|} AuxVars[] AssignedVars[#valid, #NULL.offset, #NULL.base] [2018-01-28 23:32:47,449 INFO L84 mationBacktranslator]: Skipped ATE [195] [195] L1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-01-28 23:32:47,449 INFO L84 mationBacktranslator]: Skipped ATE [201] [201] mainENTRY-->L549: Formula: (and (<= |v_main_#t~nondet2_1| 2147483647) (<= 0 (+ |v_main_#t~nondet2_1| 2147483648))) InVars {main_#t~nondet2=|v_main_#t~nondet2_1|} OutVars{main_#t~nondet2=|v_main_#t~nondet2_1|} AuxVars[] AssignedVars[] [2018-01-28 23:32:47,449 INFO L84 mationBacktranslator]: Skipped ATE [205] [205] L549-->L549': Formula: (= v_main_~length1~4_1 |v_main_#t~nondet2_2|) InVars {main_#t~nondet2=|v_main_#t~nondet2_2|} OutVars{main_~length1~4=v_main_~length1~4_1, main_#t~nondet2=|v_main_#t~nondet2_2|} AuxVars[] AssignedVars[main_~length1~4] [2018-01-28 23:32:47,449 INFO L84 mationBacktranslator]: Skipped ATE [209] [209] L549'-->L550: Formula: true InVars {} OutVars{main_#t~nondet2=|v_main_#t~nondet2_3|} AuxVars[] AssignedVars[main_#t~nondet2] [2018-01-28 23:32:47,449 INFO L84 mationBacktranslator]: Skipped ATE [213] [213] L550-->L550'': Formula: (not (< v_main_~length1~4_4 1)) InVars {main_~length1~4=v_main_~length1~4_4} OutVars{main_~length1~4=v_main_~length1~4_4} AuxVars[] AssignedVars[] [2018-01-28 23:32:47,450 INFO L84 mationBacktranslator]: Skipped ATE [217] [217] L550''-->L553: Formula: (and (= |v_main_#t~malloc3.offset_1| 0) (= (select |v_#valid_10| |v_main_#t~malloc3.base_1|) 0) (= |v_#valid_9| (store |v_#valid_10| |v_main_#t~malloc3.base_1| 1)) (not (= 0 |v_main_#t~malloc3.base_1|)) (= (store |v_#length_6| |v_main_#t~malloc3.base_1| v_main_~length1~4_5) |v_#length_5|)) InVars {#length=|v_#length_6|, main_~length1~4=v_main_~length1~4_5, #valid=|v_#valid_10|} OutVars{main_#t~malloc3.base=|v_main_#t~malloc3.base_1|, #length=|v_#length_5|, main_~length1~4=v_main_~length1~4_5, main_#t~malloc3.offset=|v_main_#t~malloc3.offset_1|, #valid=|v_#valid_9|} AuxVars[] AssignedVars[main_#t~malloc3.base, main_#t~malloc3.offset, #valid, #length] [2018-01-28 23:32:47,450 INFO L84 mationBacktranslator]: Skipped ATE [219] [219] L553-->L554: Formula: (and (= v_main_~nondetString1~4.base_1 |v_main_#t~malloc3.base_2|) (= v_main_~nondetString1~4.offset_1 |v_main_#t~malloc3.offset_2|)) InVars {main_#t~malloc3.base=|v_main_#t~malloc3.base_2|, main_#t~malloc3.offset=|v_main_#t~malloc3.offset_2|} OutVars{main_#t~malloc3.base=|v_main_#t~malloc3.base_2|, main_~nondetString1~4.offset=v_main_~nondetString1~4.offset_1, main_~nondetString1~4.base=v_main_~nondetString1~4.base_1, main_#t~malloc3.offset=|v_main_#t~malloc3.offset_2|} AuxVars[] AssignedVars[main_~nondetString1~4.base, main_~nondetString1~4.offset] [2018-01-28 23:32:47,450 INFO L84 mationBacktranslator]: Skipped ATE [221] [221] L554-->L554': Formula: (let ((.cse0 (+ v_main_~length1~4_6 v_main_~nondetString1~4.offset_2))) (and (= 1 (select |v_#valid_11| v_main_~nondetString1~4.base_2)) (= |v_#memory_int_part_locs_0_locs_0_1| |v_#memory_int_part_locs_0_locs_0_2|) (<= 1 .cse0) (<= .cse0 (select |v_#length_7| v_main_~nondetString1~4.base_2)))) InVars {#memory_int_part_locs_0_locs_0=|v_#memory_int_part_locs_0_locs_0_1|, main_~length1~4=v_main_~length1~4_6, main_~nondetString1~4.base=v_main_~nondetString1~4.base_2, #valid=|v_#valid_11|, #length=|v_#length_7|, main_~nondetString1~4.offset=v_main_~nondetString1~4.offset_2} OutVars{#memory_int_part_locs_0_locs_0=|v_#memory_int_part_locs_0_locs_0_2|, main_~length1~4=v_main_~length1~4_6, main_~nondetString1~4.base=v_main_~nondetString1~4.base_2, #valid=|v_#valid_11|, #memory_int=|v_#memory_int_4|, #length=|v_#length_7|, main_~nondetString1~4.offset=v_main_~nondetString1~4.offset_2} AuxVars[] AssignedVars[#memory_int_part_locs_0_locs_0, #memory_int] [2018-01-28 23:32:47,450 INFO L84 mationBacktranslator]: Skipped ATE [229] [229] L554'-->cstrlenENTRY: Formula: (and (= |v_cstrlen_#in~str.baseInParam_1| v_main_~nondetString1~4.base_6) (= |v_cstrlen_#in~str.offsetInParam_1| v_main_~nondetString1~4.offset_5)) InVars {main_~nondetString1~4.offset=v_main_~nondetString1~4.offset_5, main_~nondetString1~4.base=v_main_~nondetString1~4.base_6} OutVars{cstrlen_#in~str.base=|v_cstrlen_#in~str.baseInParam_1|, cstrlen_#in~str.offset=|v_cstrlen_#in~str.offsetInParam_1|} AuxVars[] AssignedVars[cstrlen_#in~str.base, cstrlen_#in~str.offset] [2018-01-28 23:32:47,451 INFO L84 mationBacktranslator]: Skipped ATE [233] [233] cstrlenENTRY-->L543: Formula: (and (= v_cstrlen_~str.offset_1 |v_cstrlen_#in~str.offset_1|) (= v_cstrlen_~str.base_1 |v_cstrlen_#in~str.base_1|)) InVars {cstrlen_#in~str.base=|v_cstrlen_#in~str.base_1|, cstrlen_#in~str.offset=|v_cstrlen_#in~str.offset_1|} OutVars{cstrlen_~str.offset=v_cstrlen_~str.offset_1, cstrlen_#in~str.base=|v_cstrlen_#in~str.base_1|, cstrlen_~str.base=v_cstrlen_~str.base_1, cstrlen_#in~str.offset=|v_cstrlen_#in~str.offset_1|} AuxVars[] AssignedVars[cstrlen_~str.offset, cstrlen_~str.base] [2018-01-28 23:32:47,451 INFO L84 mationBacktranslator]: Skipped ATE [237] [237] L543-->L544: Formula: true InVars {} OutVars{cstrlen_~s~2.offset=v_cstrlen_~s~2.offset_1, cstrlen_~s~2.base=v_cstrlen_~s~2.base_1} AuxVars[] AssignedVars[cstrlen_~s~2.offset, cstrlen_~s~2.base] [2018-01-28 23:32:47,451 INFO L84 mationBacktranslator]: Skipped ATE [241] [241] L544-->L544''''''''': Formula: (and (= v_cstrlen_~s~2.offset_2 v_cstrlen_~str.offset_2) (= v_cstrlen_~s~2.base_2 v_cstrlen_~str.base_2)) InVars {cstrlen_~str.offset=v_cstrlen_~str.offset_2, cstrlen_~str.base=v_cstrlen_~str.base_2} OutVars{cstrlen_~s~2.base=v_cstrlen_~s~2.base_2, cstrlen_~str.offset=v_cstrlen_~str.offset_2, cstrlen_~str.base=v_cstrlen_~str.base_2, cstrlen_~s~2.offset=v_cstrlen_~s~2.offset_2} AuxVars[] AssignedVars[cstrlen_~s~2.offset, cstrlen_~s~2.base] [2018-01-28 23:32:47,451 INFO L84 mationBacktranslator]: Skipped ATE [245] [245] L544'''''''''-->L544': Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-01-28 23:32:47,451 INFO L84 mationBacktranslator]: Skipped ATE [253] [253] L544'-->L544'': Formula: (and (= (select |v_#valid_3| v_cstrlen_~s~2.base_3) 1) (<= (+ v_cstrlen_~s~2.offset_3 1) (select |v_#length_1| v_cstrlen_~s~2.base_3)) (<= 0 v_cstrlen_~s~2.offset_3) (= |v_cstrlen_#t~mem1_1| (select (select |v_#memory_int_part_locs_0_locs_0_3| v_cstrlen_~s~2.base_3) v_cstrlen_~s~2.offset_3))) InVars {#memory_int_part_locs_0_locs_0=|v_#memory_int_part_locs_0_locs_0_3|, #length=|v_#length_1|, cstrlen_~s~2.base=v_cstrlen_~s~2.base_3, cstrlen_~s~2.offset=v_cstrlen_~s~2.offset_3, #valid=|v_#valid_3|} OutVars{#memory_int_part_locs_0_locs_0=|v_#memory_int_part_locs_0_locs_0_3|, cstrlen_~s~2.offset=v_cstrlen_~s~2.offset_3, #valid=|v_#valid_3|, #length=|v_#length_1|, cstrlen_~s~2.base=v_cstrlen_~s~2.base_3, cstrlen_#t~mem1=|v_cstrlen_#t~mem1_1|} AuxVars[] AssignedVars[cstrlen_#t~mem1] [2018-01-28 23:32:47,451 INFO L84 mationBacktranslator]: Skipped ATE [263] [263] L544''-->L544''''': Formula: (not (= |v_cstrlen_#t~mem1_4| 0)) InVars {cstrlen_#t~mem1=|v_cstrlen_#t~mem1_4|} OutVars{cstrlen_#t~mem1=|v_cstrlen_#t~mem1_4|} AuxVars[] AssignedVars[] [2018-01-28 23:32:47,452 INFO L84 mationBacktranslator]: Skipped ATE [269] [269] L544'''''-->L544'''''': Formula: true InVars {} OutVars{cstrlen_#t~mem1=|v_cstrlen_#t~mem1_5|} AuxVars[] AssignedVars[cstrlen_#t~mem1] [2018-01-28 23:32:47,452 INFO L84 mationBacktranslator]: Skipped ATE [271] [271] L544''''''-->L544''''''': Formula: (and (= |v_cstrlen_#t~pre0.offset_1| (+ v_cstrlen_~s~2.offset_5 1)) (= |v_cstrlen_#t~pre0.base_1| v_cstrlen_~s~2.base_6)) InVars {cstrlen_~s~2.offset=v_cstrlen_~s~2.offset_5, cstrlen_~s~2.base=v_cstrlen_~s~2.base_6} OutVars{cstrlen_#t~pre0.offset=|v_cstrlen_#t~pre0.offset_1|, cstrlen_~s~2.base=v_cstrlen_~s~2.base_6, cstrlen_#t~pre0.base=|v_cstrlen_#t~pre0.base_1|, cstrlen_~s~2.offset=v_cstrlen_~s~2.offset_5} AuxVars[] AssignedVars[cstrlen_#t~pre0.base, cstrlen_#t~pre0.offset] [2018-01-28 23:32:47,452 INFO L84 mationBacktranslator]: Skipped ATE [273] [273] L544'''''''-->L544'''''''': Formula: (and (= v_cstrlen_~s~2.offset_6 (+ v_cstrlen_~s~2.offset_7 1)) (= v_cstrlen_~s~2.base_7 v_cstrlen_~s~2.base_8)) InVars {cstrlen_~s~2.offset=v_cstrlen_~s~2.offset_7, cstrlen_~s~2.base=v_cstrlen_~s~2.base_8} OutVars{cstrlen_~s~2.offset=v_cstrlen_~s~2.offset_6, cstrlen_~s~2.base=v_cstrlen_~s~2.base_7} AuxVars[] AssignedVars[cstrlen_~s~2.offset, cstrlen_~s~2.base] [2018-01-28 23:32:47,452 INFO L84 mationBacktranslator]: Skipped ATE [275] [275] L544''''''''-->L544''''''''': Formula: true InVars {} OutVars{cstrlen_#t~pre0.offset=|v_cstrlen_#t~pre0.offset_2|, cstrlen_#t~pre0.base=|v_cstrlen_#t~pre0.base_2|} AuxVars[] AssignedVars[cstrlen_#t~pre0.base, cstrlen_#t~pre0.offset] [2018-01-28 23:32:47,452 INFO L84 mationBacktranslator]: Skipped ATE [245] [245] L544'''''''''-->L544': Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-01-28 23:32:47,452 INFO L84 mationBacktranslator]: Skipped ATE [257] [257] L544'-->cstrlenErr1RequiresViolation: Formula: (or (not (<= 0 v_cstrlen_~s~2.offset_4)) (not (<= (+ v_cstrlen_~s~2.offset_4 1) (select |v_#length_2| v_cstrlen_~s~2.base_5)))) InVars {#length=|v_#length_2|, cstrlen_~s~2.base=v_cstrlen_~s~2.base_5, cstrlen_~s~2.offset=v_cstrlen_~s~2.offset_4} OutVars{#length=|v_#length_2|, cstrlen_~s~2.base=v_cstrlen_~s~2.base_5, cstrlen_~s~2.offset=v_cstrlen_~s~2.offset_4} AuxVars[] AssignedVars[] [2018-01-28 23:32:47,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:32:47 BasicIcfg [2018-01-28 23:32:47,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-28 23:32:47,459 INFO L168 Benchmark]: Toolchain (without parser) took 6586.34 ms. Allocated memory was 299.9 MB in the beginning and 829.4 MB in the end (delta: 529.5 MB). Free memory was 259.9 MB in the beginning and 702.3 MB in the end (delta: -442.4 MB). Peak memory consumption was 87.2 MB. Max. memory is 5.3 GB. [2018-01-28 23:32:47,460 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 299.9 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 23:32:47,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.02 ms. Allocated memory is still 299.9 MB. Free memory was 258.9 MB in the beginning and 248.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-28 23:32:47,461 INFO L168 Benchmark]: Boogie Preprocessor took 33.26 ms. Allocated memory is still 299.9 MB. Free memory was 248.8 MB in the beginning and 247.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-28 23:32:47,461 INFO L168 Benchmark]: RCFGBuilder took 222.43 ms. Allocated memory is still 299.9 MB. Free memory was 247.8 MB in the beginning and 231.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 5.3 GB. [2018-01-28 23:32:47,461 INFO L168 Benchmark]: IcfgTransformer took 4851.94 ms. Allocated memory was 299.9 MB in the beginning and 742.4 MB in the end (delta: 442.5 MB). Free memory was 231.9 MB in the beginning and 673.3 MB in the end (delta: -441.4 MB). Peak memory consumption was 1.1 MB. Max. memory is 5.3 GB. [2018-01-28 23:32:47,462 INFO L168 Benchmark]: TraceAbstraction took 1233.90 ms. Allocated memory was 742.4 MB in the beginning and 829.4 MB in the end (delta: 87.0 MB). Free memory was 673.3 MB in the beginning and 702.3 MB in the end (delta: -29.0 MB). Peak memory consumption was 58.1 MB. Max. memory is 5.3 GB. [2018-01-28 23:32:47,464 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 299.9 MB. Free memory is still 265.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 235.02 ms. Allocated memory is still 299.9 MB. Free memory was 258.9 MB in the beginning and 248.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.26 ms. Allocated memory is still 299.9 MB. Free memory was 248.8 MB in the beginning and 247.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 222.43 ms. Allocated memory is still 299.9 MB. Free memory was 247.8 MB in the beginning and 231.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 5.3 GB. * IcfgTransformer took 4851.94 ms. Allocated memory was 299.9 MB in the beginning and 742.4 MB in the end (delta: 442.5 MB). Free memory was 231.9 MB in the beginning and 673.3 MB in the end (delta: -441.4 MB). Peak memory consumption was 1.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1233.90 ms. Allocated memory was 742.4 MB in the beginning and 829.4 MB in the end (delta: 87.0 MB). Free memory was 673.3 MB in the beginning and 702.3 MB in the end (delta: -29.0 MB). Peak memory consumption was 58.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 39 LocStat_MAX_WEQGRAPH_SIZE : 4 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 371 LocStat_NO_SUPPORTING_DISEQUALITIES : 90 LocStat_NO_DISJUNCTIONS : -78 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 56 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 66 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 57 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 9.325067 RENAME_VARIABLES(MILLISECONDS) : 0.019050 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 7.159257 PROJECTAWAY(MILLISECONDS) : 9.271601 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.088488 DISJOIN(MILLISECONDS) : 0.209830 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.037457 ADD_EQUALITY(MILLISECONDS) : 0.015300 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.010593 #CONJOIN_DISJUNCTIVE : 189 #RENAME_VARIABLES : 397 #UNFREEZE : 0 #CONJOIN : 284 #PROJECTAWAY : 276 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 45 #RENAME_VARIABLES_DISJUNCTIVE : 394 #ADD_EQUALITY : 67 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 5 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 1 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 1 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_1 : 1 COUNT_BLOCKS_for_[#memory_int]_at_dim_1 : 1 COUNT_ARRAY_READS for [#memory_int] : 2 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 5 error locations. UNSAFE Result, 1.1s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 166 SDtfs, 156 SDslu, 348 SDs, 0 SdLazy, 212 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, 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, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 3352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-28_23-32-47-474.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-28_23-32-47-474.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-28_23-32-47-474.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-28_23-32-47-474.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-28_23-32-47-474.csv Received shutdown request...