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 0.1.23-5f7ec6e [2018-01-31 09:31:04,901 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:31:04,903 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:31:04,920 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:31:04,921 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:31:04,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:31:04,928 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:31:04,932 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:31:04,935 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:31:04,935 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:31:04,943 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:31:04,943 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:31:04,944 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:31:04,945 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:31:04,946 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:31:04,949 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:31:04,951 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:31:04,953 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:31:04,954 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:31:04,955 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:31:04,958 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:31:04,958 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:31:04,958 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:31:04,959 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:31:04,960 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:31:04,961 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:31:04,961 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:31:04,962 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:31:04,962 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:31:04,962 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:31:04,963 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:31:04,963 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 [2018-01-31 09:31:04,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:31:04,978 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:31:04,978 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:31:04,979 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:31:04,979 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:31:04,979 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:31:04,979 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:31:04,980 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:31:04,984 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:31:04,984 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 09:31:04,984 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:31:04,984 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:31:04,985 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:31:04,985 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 09:31:04,985 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 09:31:04,985 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 09:31:04,985 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:31:04,985 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:31:04,986 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:31:04,986 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:31:04,986 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:31:04,986 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:31:04,986 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:31:04,987 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:31:04,987 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:31:04,987 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:31:04,987 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:31:04,987 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:31:04,987 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:31:04,988 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:31:04,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:31:04,988 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:31:04,989 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:31:04,989 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:31:05,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:31:05,054 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:31:05,057 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:31:05,064 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:31:05,065 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:31:05,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-01-31 09:31:05,271 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:31:05,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 09:31:05,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:31:05,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:31:05,285 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:31:05,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:31:05" (1/1) ... [2018-01-31 09:31:05,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466434ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05, skipping insertion in model container [2018-01-31 09:31:05,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:31:05" (1/1) ... [2018-01-31 09:31:05,311 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:31:05,373 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:31:05,545 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:31:05,567 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:31:05,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05 WrapperNode [2018-01-31 09:31:05,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:31:05,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:31:05,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:31:05,576 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:31:05,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05" (1/1) ... [2018-01-31 09:31:05,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05" (1/1) ... [2018-01-31 09:31:05,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05" (1/1) ... [2018-01-31 09:31:05,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05" (1/1) ... [2018-01-31 09:31:05,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05" (1/1) ... [2018-01-31 09:31:05,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05" (1/1) ... [2018-01-31 09:31:05,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05" (1/1) ... [2018-01-31 09:31:05,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:31:05,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:31:05,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:31:05,619 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:31:05,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05" (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 [2018-01-31 09:31:05,686 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:31:05,686 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:31:05,687 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-01-31 09:31:05,687 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:31:05,689 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:31:05,689 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:31:05,689 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:31:05,689 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:31:05,689 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:31:05,690 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:31:05,690 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-01-31 09:31:05,690 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:31:05,690 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:31:05,690 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:31:06,103 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:31:06,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:31:06 BoogieIcfgContainer [2018-01-31 09:31:06,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:31:06,104 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 09:31:06,105 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 09:31:06,106 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 09:31:06,108 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:31:06" (1/1) ... [2018-01-31 09:31:06,115 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 09:31:06,116 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 09:31:06,116 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 09:31:06,162 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 5 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 09:31:06,184 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 09:31:06,247 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 09:31:14,467 INFO L314 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 35 variables. [2018-01-31 09:31:14,471 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 09:31:14,485 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 2 [2018-01-31 09:31:14,485 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 09:31:14,485 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 09:31:14,486 INFO L244 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')) [2018-01-31 09:31:14,493 INFO L547 PartitionManager]: partitioning result: [2018-01-31 09:31:14,493 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 09:31:14,494 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 09:31:14,494 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-01-31 09:31:14,494 INFO L564 PartitionManager]: # location blocks :2 [2018-01-31 09:31:14,494 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 09:31:14,494 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-01-31 09:31:14,494 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 09:31:14,495 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 09:31:14,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:31:14 BasicIcfg [2018-01-31 09:31:14,518 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 09:31:14,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:31:14,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:31:14,522 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:31:14,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:31:05" (1/4) ... [2018-01-31 09:31:14,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717b3be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:31:14, skipping insertion in model container [2018-01-31 09:31:14,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:05" (2/4) ... [2018-01-31 09:31:14,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717b3be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:31:14, skipping insertion in model container [2018-01-31 09:31:14,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:31:06" (3/4) ... [2018-01-31 09:31:14,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717b3be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:31:14, skipping insertion in model container [2018-01-31 09:31:14,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:31:14" (4/4) ... [2018-01-31 09:31:14,526 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 09:31:14,535 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:31:14,544 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-31 09:31:14,722 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:31:14,722 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:31:14,722 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:31:14,722 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:31:14,723 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:31:14,723 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:31:14,723 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:31:14,723 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:31:14,724 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:31:14,740 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-31 09:31:14,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-31 09:31:14,747 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:14,748 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:14,749 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:14,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2110774640, now seen corresponding path program 1 times [2018-01-31 09:31:14,756 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:14,756 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:14,813 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:14,814 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:14,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:14,886 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:15,484 WARN L146 SmtUtils]: Spent 258ms on a formula simplification. DAG size of input: 15 DAG size of output 11 [2018-01-31 09:31:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:15,490 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:15,491 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 09:31:15,492 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 09:31:15,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 09:31:15,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:31:15,506 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2018-01-31 09:31:15,914 WARN L143 SmtUtils]: Spent 136ms on a formula simplification that was a NOOP. DAG size: 16 [2018-01-31 09:31:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:16,105 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-01-31 09:31:16,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 09:31:16,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-01-31 09:31:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:16,121 INFO L225 Difference]: With dead ends: 54 [2018-01-31 09:31:16,122 INFO L226 Difference]: Without dead ends: 38 [2018-01-31 09:31:16,125 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:31:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-31 09:31:16,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-31 09:31:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-31 09:31:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-01-31 09:31:16,164 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 9 [2018-01-31 09:31:16,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:16,165 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-01-31 09:31:16,165 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 09:31:16,165 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-01-31 09:31:16,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-31 09:31:16,166 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:16,166 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:16,166 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:16,166 INFO L82 PathProgramCache]: Analyzing trace with hash 2110774638, now seen corresponding path program 1 times [2018-01-31 09:31:16,166 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:16,167 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:16,167 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:16,168 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:16,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:16,177 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:16,326 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:16,326 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:31:16,328 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 09:31:16,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 09:31:16,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-31 09:31:16,328 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2018-01-31 09:31:16,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:16,726 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-01-31 09:31:16,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-31 09:31:16,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-31 09:31:16,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:16,728 INFO L225 Difference]: With dead ends: 38 [2018-01-31 09:31:16,728 INFO L226 Difference]: Without dead ends: 37 [2018-01-31 09:31:16,729 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:31:16,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-31 09:31:16,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-01-31 09:31:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-31 09:31:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-31 09:31:16,736 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 9 [2018-01-31 09:31:16,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:16,739 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-31 09:31:16,739 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 09:31:16,739 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-31 09:31:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-31 09:31:16,740 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:16,740 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:16,740 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:16,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1289726560, now seen corresponding path program 1 times [2018-01-31 09:31:16,740 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:16,740 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:16,741 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:16,742 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:16,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:16,769 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:17,759 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:17,759 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-31 09:31:17,760 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:31:17,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:31:17,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:31:17,760 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 9 states. [2018-01-31 09:31:18,356 WARN L143 SmtUtils]: Spent 101ms on a formula simplification that was a NOOP. DAG size: 19 [2018-01-31 09:31:18,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:18,463 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-01-31 09:31:18,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:31:18,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-01-31 09:31:18,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:18,467 INFO L225 Difference]: With dead ends: 49 [2018-01-31 09:31:18,468 INFO L226 Difference]: Without dead ends: 48 [2018-01-31 09:31:18,468 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-01-31 09:31:18,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-31 09:31:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2018-01-31 09:31:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-31 09:31:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-01-31 09:31:18,475 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 15 [2018-01-31 09:31:18,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:18,475 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-01-31 09:31:18,476 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:31:18,476 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-01-31 09:31:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-31 09:31:18,476 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:18,477 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:18,477 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:18,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1289726558, now seen corresponding path program 1 times [2018-01-31 09:31:18,478 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:18,478 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:18,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:18,479 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:18,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:18,488 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:18,557 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:18,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:31:18,557 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:31:18,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:31:18,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:31:18,558 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2018-01-31 09:31:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:18,939 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-01-31 09:31:18,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 09:31:18,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-01-31 09:31:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:18,940 INFO L225 Difference]: With dead ends: 39 [2018-01-31 09:31:18,940 INFO L226 Difference]: Without dead ends: 38 [2018-01-31 09:31:18,940 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:31:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-31 09:31:18,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-31 09:31:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-31 09:31:18,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-01-31 09:31:18,946 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 15 [2018-01-31 09:31:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:18,947 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-01-31 09:31:18,947 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:31:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-01-31 09:31:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-31 09:31:18,947 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:18,948 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:18,948 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:18,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1230559644, now seen corresponding path program 1 times [2018-01-31 09:31:18,950 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:18,950 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:18,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:18,951 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:18,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:18,968 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:19,082 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:19,082 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:31:19,082 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 09:31:19,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 09:31:19,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-31 09:31:19,083 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2018-01-31 09:31:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:19,268 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-01-31 09:31:19,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-31 09:31:19,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-31 09:31:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:19,269 INFO L225 Difference]: With dead ends: 38 [2018-01-31 09:31:19,269 INFO L226 Difference]: Without dead ends: 28 [2018-01-31 09:31:19,270 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:31:19,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-01-31 09:31:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-01-31 09:31:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-31 09:31:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-01-31 09:31:19,275 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2018-01-31 09:31:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:19,276 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-01-31 09:31:19,276 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 09:31:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-01-31 09:31:19,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-31 09:31:19,279 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:19,279 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:19,279 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1509086939, now seen corresponding path program 1 times [2018-01-31 09:31:19,279 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:19,279 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:19,280 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:19,281 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:19,281 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:19,308 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:19,665 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:31:19,665 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:31:19,684 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:19,711 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:31:19,763 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 13 [2018-01-31 09:31:19,764 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-31 09:31:19,780 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-01-31 09:31:19,782 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 11 treesize of output 10 [2018-01-31 09:31:19,782 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-31 09:31:19,804 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-31 09:31:19,829 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-31 09:31:19,830 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:25, output treesize:21 [2018-01-31 09:31:20,143 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-01-31 09:31:20,187 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2018-01-31 09:31:20,187 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-01-31 09:31:20,191 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-31 09:31:20,203 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-01-31 09:31:20,203 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-01-31 09:31:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:20,324 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:31:20,324 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2018-01-31 09:31:20,324 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-31 09:31:20,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-31 09:31:20,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2018-01-31 09:31:20,325 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 18 states. [2018-01-31 09:31:21,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:21,014 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2018-01-31 09:31:21,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-31 09:31:21,014 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2018-01-31 09:31:21,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:21,015 INFO L225 Difference]: With dead ends: 40 [2018-01-31 09:31:21,015 INFO L226 Difference]: Without dead ends: 39 [2018-01-31 09:31:21,016 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2018-01-31 09:31:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-31 09:31:21,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-01-31 09:31:21,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-31 09:31:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-01-31 09:31:21,022 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 22 [2018-01-31 09:31:21,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:21,022 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-01-31 09:31:21,022 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-31 09:31:21,023 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-01-31 09:31:21,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-31 09:31:21,023 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:21,024 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:21,024 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:21,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1637434880, now seen corresponding path program 2 times [2018-01-31 09:31:21,024 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:21,024 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:21,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:21,025 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:21,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:21,044 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:21,378 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:31:21,378 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:31:21,383 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:31:21,395 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:31:21,416 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:31:21,429 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:31:21,432 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:31:21,441 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 [2018-01-31 09:31:21,442 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-31 09:31:21,445 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-31 09:31:21,445 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-31 09:31:21,454 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2018-01-31 09:31:21,458 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-01-31 09:31:21,460 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_1 term size 6 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:270) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:445) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:237) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-31 09:31:21,463 INFO L168 Benchmark]: Toolchain (without parser) took 16191.51 ms. Allocated memory was 308.3 MB in the beginning and 966.3 MB in the end (delta: 658.0 MB). Free memory was 268.2 MB in the beginning and 579.3 MB in the end (delta: -311.1 MB). Peak memory consumption was 346.9 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:21,464 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 308.3 MB. Free memory is still 274.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:31:21,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.53 ms. Allocated memory is still 308.3 MB. Free memory was 267.2 MB in the beginning and 257.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:21,464 INFO L168 Benchmark]: Boogie Preprocessor took 42.91 ms. Allocated memory is still 308.3 MB. Free memory was 257.1 MB in the beginning and 256.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-31 09:31:21,464 INFO L168 Benchmark]: RCFGBuilder took 484.97 ms. Allocated memory is still 308.3 MB. Free memory was 255.1 MB in the beginning and 240.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:21,465 INFO L168 Benchmark]: IcfgTransformer took 8413.72 ms. Allocated memory was 308.3 MB in the beginning and 755.0 MB in the end (delta: 446.7 MB). Free memory was 240.0 MB in the beginning and 515.9 MB in the end (delta: -276.0 MB). Peak memory consumption was 170.7 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:21,465 INFO L168 Benchmark]: TraceAbstraction took 6943.46 ms. Allocated memory was 755.0 MB in the beginning and 966.3 MB in the end (delta: 211.3 MB). Free memory was 515.9 MB in the beginning and 579.3 MB in the end (delta: -63.3 MB). Peak memory consumption was 148.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:21,466 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 308.3 MB. Free memory is still 274.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 297.53 ms. Allocated memory is still 308.3 MB. Free memory was 267.2 MB in the beginning and 257.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 42.91 ms. Allocated memory is still 308.3 MB. Free memory was 257.1 MB in the beginning and 256.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 484.97 ms. Allocated memory is still 308.3 MB. Free memory was 255.1 MB in the beginning and 240.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 5.3 GB. * IcfgTransformer took 8413.72 ms. Allocated memory was 308.3 MB in the beginning and 755.0 MB in the end (delta: 446.7 MB). Free memory was 240.0 MB in the beginning and 515.9 MB in the end (delta: -276.0 MB). Peak memory consumption was 170.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6943.46 ms. Allocated memory was 755.0 MB in the beginning and 966.3 MB in the end (delta: 211.3 MB). Free memory was 515.9 MB in the beginning and 579.3 MB in the end (delta: -63.3 MB). Peak memory consumption was 148.0 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 : 625 LocStat_NO_SUPPORTING_DISEQUALITIES : 175 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 : 87 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 57 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 13.102908 RENAME_VARIABLES(MILLISECONDS) : 0.018592 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 10.058215 PROJECTAWAY(MILLISECONDS) : 11.766137 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.137326 DISJOIN(MILLISECONDS) : 0.288314 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.037329 ADD_EQUALITY(MILLISECONDS) : 0.015771 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008662 #CONJOIN_DISJUNCTIVE : 189 #RENAME_VARIABLES : 397 #UNFREEZE : 0 #CONJOIN : 305 #PROJECTAWAY : 276 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 45 #RENAME_VARIABLES_DISJUNCTIVE : 394 #ADD_EQUALITY : 88 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 5 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics #COUNT_NEW_ARRAY_VARS_[#memory_int] : 2 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 2 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 2 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: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_1 term size 6 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_1 term size 6: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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-0-2018-01-31_09-31-21-479.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-0-2018-01-31_09-31-21-479.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-0-2018-01-31_09-31-21-479.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-0-2018-01-31_09-31-21-479.csv Received shutdown request...