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/cstrlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a [2018-01-30 01:00:24,410 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 01:00:24,413 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 01:00:24,429 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 01:00:24,429 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 01:00:24,430 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 01:00:24,432 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 01:00:24,433 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 01:00:24,436 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 01:00:24,436 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 01:00:24,437 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 01:00:24,438 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 01:00:24,439 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 01:00:24,440 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 01:00:24,441 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 01:00:24,444 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 01:00:24,446 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 01:00:24,448 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 01:00:24,449 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 01:00:24,451 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 01:00:24,453 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-30 01:00:24,453 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-30 01:00:24,453 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-30 01:00:24,454 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-30 01:00:24,455 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-30 01:00:24,456 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-30 01:00:24,457 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-30 01:00:24,457 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-30 01:00:24,458 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-30 01:00:24,458 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-30 01:00:24,459 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-30 01:00:24,459 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 [2018-01-30 01:00:24,468 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 01:00:24,469 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 01:00:24,470 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 01:00:24,470 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 01:00:24,470 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 01:00:24,470 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 01:00:24,470 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 01:00:24,471 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 01:00:24,471 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 01:00:24,471 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-30 01:00:24,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 01:00:24,472 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 01:00:24,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 01:00:24,472 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-30 01:00:24,472 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-30 01:00:24,472 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-30 01:00:24,473 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 01:00:24,473 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 01:00:24,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 01:00:24,473 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 01:00:24,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 01:00:24,474 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 01:00:24,474 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 01:00:24,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 01:00:24,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 01:00:24,474 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 01:00:24,475 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 01:00:24,475 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 01:00:24,475 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 01:00:24,475 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 01:00:24,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 01:00:24,475 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 01:00:24,476 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 01:00:24,476 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 01:00:24,511 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 01:00:24,524 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 01:00:24,528 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 01:00:24,530 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 01:00:24,530 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 01:00:24,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-01-30 01:00:24,682 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 01:00:24,689 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 01:00:24,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 01:00:24,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 01:00:24,696 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 01:00:24,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 01:00:24" (1/1) ... [2018-01-30 01:00:24,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a53ac1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24, skipping insertion in model container [2018-01-30 01:00:24,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 01:00:24" (1/1) ... [2018-01-30 01:00:24,713 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 01:00:24,752 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 01:00:24,865 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 01:00:24,880 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 01:00:24,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24 WrapperNode [2018-01-30 01:00:24,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 01:00:24,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 01:00:24,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 01:00:24,887 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 01:00:24,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24" (1/1) ... [2018-01-30 01:00:24,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24" (1/1) ... [2018-01-30 01:00:24,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24" (1/1) ... [2018-01-30 01:00:24,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24" (1/1) ... [2018-01-30 01:00:24,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24" (1/1) ... [2018-01-30 01:00:24,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24" (1/1) ... [2018-01-30 01:00:24,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24" (1/1) ... [2018-01-30 01:00:24,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 01:00:24,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 01:00:24,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 01:00:24,916 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 01:00:24,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24" (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 [2018-01-30 01:00:24,963 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 01:00:24,963 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 01:00:24,963 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-01-30 01:00:24,963 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 01:00:24,963 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-30 01:00:24,963 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-30 01:00:24,963 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-30 01:00:24,963 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-30 01:00:24,963 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-30 01:00:24,964 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 01:00:24,964 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-01-30 01:00:24,964 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 01:00:24,964 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 01:00:24,964 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 01:00:25,144 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 01:00:25,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 01:00:25 BoogieIcfgContainer [2018-01-30 01:00:25,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 01:00:25,145 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 01:00:25,145 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 01:00:25,146 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 01:00:25,149 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 01:00:25" (1/1) ... [2018-01-30 01:00:25,156 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-30 01:00:25,156 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-30 01:00:25,157 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-30 01:00:25,196 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 5 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-30 01:00:25,216 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-30 01:00:25,271 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-30 01:00:31,609 INFO L311 AbstractInterpreter]: Visited 47 different actions 125 times. Merged at 26 different actions 51 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 35 variables. [2018-01-30 01:00:31,611 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-30 01:00:31,622 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 2 [2018-01-30 01:00:31,623 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-30 01:00:31,623 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-30 01:00:31,623 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select (select |v_#memory_int_1| v_cstrlen_~p~2.base_2) v_cstrlen_~p~2.offset_2), at (SUMMARY for call #t~mem0 := read~int(~p~2.base, ~p~2.offset, 1); srcloc: L543)) ((select |v_#memory_int_5| v_main_~nondetString1~3.base_2), at (SUMMARY for call write~int(0, ~nondetString1~3.base, ~nondetString1~3.offset + (~length1~3 - 1) * 1, 1); srcloc: L553)) [2018-01-30 01:00:31,630 INFO L547 PartitionManager]: partitioning result: [2018-01-30 01:00:31,630 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-30 01:00:31,630 INFO L561 PartitionManager]: at dimension 0 [2018-01-30 01:00:31,630 INFO L562 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-01-30 01:00:31,631 INFO L563 PartitionManager]: # location blocks :2 [2018-01-30 01:00:31,631 INFO L561 PartitionManager]: at dimension 1 [2018-01-30 01:00:31,631 INFO L562 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-01-30 01:00:31,631 INFO L563 PartitionManager]: # location blocks :1 [2018-01-30 01:00:31,632 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-30 01:00:31,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 01:00:31 BasicIcfg [2018-01-30 01:00:31,646 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 01:00:31,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 01:00:31,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 01:00:31,650 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 01:00:31,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 01:00:24" (1/4) ... [2018-01-30 01:00:31,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799ddc9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 01:00:31, skipping insertion in model container [2018-01-30 01:00:31,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 01:00:24" (2/4) ... [2018-01-30 01:00:31,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799ddc9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 01:00:31, skipping insertion in model container [2018-01-30 01:00:31,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 01:00:25" (3/4) ... [2018-01-30 01:00:31,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799ddc9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 01:00:31, skipping insertion in model container [2018-01-30 01:00:31,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 01:00:31" (4/4) ... [2018-01-30 01:00:31,654 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-30 01:00:31,663 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 01:00:31,742 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-30 01:00:31,783 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 01:00:31,783 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 01:00:31,783 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 01:00:31,783 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 01:00:31,783 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 01:00:31,784 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 01:00:31,784 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 01:00:31,784 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 01:00:31,785 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 01:00:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-30 01:00:31,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-30 01:00:31,805 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:31,806 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:31,806 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:00:31,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2110774640, now seen corresponding path program 1 times [2018-01-30 01:00:31,812 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:31,813 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:31,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:31,859 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:31,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:31,907 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:00:32,050 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:00:32,050 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-30 01:00:32,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 01:00:32,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 01:00:32,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-30 01:00:32,061 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2018-01-30 01:00:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:32,149 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-01-30 01:00:32,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 01:00:32,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-01-30 01:00:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:32,163 INFO L225 Difference]: With dead ends: 55 [2018-01-30 01:00:32,163 INFO L226 Difference]: Without dead ends: 38 [2018-01-30 01:00:32,166 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-30 01:00:32,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-30 01:00:32,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-01-30 01:00:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-30 01:00:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-01-30 01:00:32,204 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 9 [2018-01-30 01:00:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:32,204 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-01-30 01:00:32,204 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 01:00:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-01-30 01:00:32,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-30 01:00:32,205 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:32,205 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:32,206 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:00:32,206 INFO L82 PathProgramCache]: Analyzing trace with hash 2110774638, now seen corresponding path program 1 times [2018-01-30 01:00:32,206 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:32,206 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:32,207 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:32,207 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:32,208 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:32,214 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:00:32,256 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:00:32,256 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 01:00:32,258 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 01:00:32,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 01:00:32,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-30 01:00:32,258 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2018-01-30 01:00:32,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:32,346 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-01-30 01:00:32,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-30 01:00:32,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-30 01:00:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:32,347 INFO L225 Difference]: With dead ends: 38 [2018-01-30 01:00:32,347 INFO L226 Difference]: Without dead ends: 37 [2018-01-30 01:00:32,348 INFO L553 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 [2018-01-30 01:00:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-30 01:00:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-01-30 01:00:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-30 01:00:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-30 01:00:32,352 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 9 [2018-01-30 01:00:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:32,352 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-30 01:00:32,352 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 01:00:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-30 01:00:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-30 01:00:32,353 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:32,353 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:32,353 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:00:32,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1343869243, now seen corresponding path program 1 times [2018-01-30 01:00:32,354 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:32,354 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:32,354 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:32,355 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:32,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:32,363 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:00:32,420 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:00:32,420 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-30 01:00:32,420 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 01:00:32,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 01:00:32,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-30 01:00:32,421 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2018-01-30 01:00:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:32,540 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2018-01-30 01:00:32,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 01:00:32,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-01-30 01:00:32,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:32,542 INFO L225 Difference]: With dead ends: 41 [2018-01-30 01:00:32,542 INFO L226 Difference]: Without dead ends: 40 [2018-01-30 01:00:32,542 INFO L553 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 [2018-01-30 01:00:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-30 01:00:32,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-01-30 01:00:32,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-30 01:00:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-01-30 01:00:32,548 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 14 [2018-01-30 01:00:32,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:32,549 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-01-30 01:00:32,549 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 01:00:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-01-30 01:00:32,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-30 01:00:32,550 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:32,550 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:32,550 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:00:32,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1343869241, now seen corresponding path program 1 times [2018-01-30 01:00:32,550 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:32,550 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:32,551 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:32,551 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:32,552 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:32,562 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:00:32,665 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:00:32,665 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-30 01:00:32,665 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 01:00:32,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 01:00:32,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-30 01:00:32,665 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 9 states. [2018-01-30 01:00:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:32,789 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-01-30 01:00:32,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 01:00:32,790 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-01-30 01:00:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:32,793 INFO L225 Difference]: With dead ends: 48 [2018-01-30 01:00:32,793 INFO L226 Difference]: Without dead ends: 47 [2018-01-30 01:00:32,794 INFO L553 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 [2018-01-30 01:00:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-01-30 01:00:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2018-01-30 01:00:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-30 01:00:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-01-30 01:00:32,801 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 14 [2018-01-30 01:00:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:32,801 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-01-30 01:00:32,801 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 01:00:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-01-30 01:00:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-30 01:00:32,802 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:32,802 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:32,802 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:00:32,803 INFO L82 PathProgramCache]: Analyzing trace with hash -507354389, now seen corresponding path program 1 times [2018-01-30 01:00:32,803 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:32,803 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:32,804 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:32,804 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:32,804 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:32,818 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:00:32,880 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:00:32,880 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 01:00:32,881 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 01:00:32,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 01:00:32,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-30 01:00:32,881 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2018-01-30 01:00:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:32,943 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-01-30 01:00:32,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-30 01:00:32,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-30 01:00:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:32,944 INFO L225 Difference]: With dead ends: 39 [2018-01-30 01:00:32,944 INFO L226 Difference]: Without dead ends: 28 [2018-01-30 01:00:32,944 INFO L553 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 [2018-01-30 01:00:32,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-01-30 01:00:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-01-30 01:00:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-30 01:00:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-01-30 01:00:32,949 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 16 [2018-01-30 01:00:32,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:32,949 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-01-30 01:00:32,949 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 01:00:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-01-30 01:00:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-30 01:00:32,950 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:32,950 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:32,950 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:00:32,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1219497204, now seen corresponding path program 1 times [2018-01-30 01:00:32,951 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:32,951 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:32,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:32,952 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:32,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:32,962 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-30 01:00:33,017 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 01:00:33,017 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-30 01:00:33,018 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 01:00:33,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 01:00:33,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-30 01:00:33,018 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states. [2018-01-30 01:00:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:33,065 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-01-30 01:00:33,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 01:00:33,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-01-30 01:00:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:33,066 INFO L225 Difference]: With dead ends: 28 [2018-01-30 01:00:33,066 INFO L226 Difference]: Without dead ends: 27 [2018-01-30 01:00:33,066 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-01-30 01:00:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-01-30 01:00:33,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-01-30 01:00:33,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-30 01:00:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-01-30 01:00:33,071 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2018-01-30 01:00:33,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:33,071 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-01-30 01:00:33,071 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 01:00:33,071 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-01-30 01:00:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-30 01:00:33,072 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:33,072 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:33,072 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:00:33,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1219497202, now seen corresponding path program 1 times [2018-01-30 01:00:33,073 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:33,073 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:33,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:33,074 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:33,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:33,088 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:00:33,304 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:33,304 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 [2018-01-30 01:00:33,317 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:33,347 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:33,440 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 [2018-01-30 01:00:33,440 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 01:00:33,466 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 [2018-01-30 01:00:33,470 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 [2018-01-30 01:00:33,470 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-30 01:00:33,473 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 01:00:33,482 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. [2018-01-30 01:00:33,483 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:28, output treesize:24 [2018-01-30 01:00:33,624 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 [2018-01-30 01:00:33,634 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 [2018-01-30 01:00:33,635 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-01-30 01:00:33,640 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-30 01:00:33,654 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-01-30 01:00:33,654 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:33 [2018-01-30 01:00:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:00:33,786 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 01:00:33,786 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-01-30 01:00:33,787 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 01:00:33,787 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 01:00:33,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2018-01-30 01:00:33,788 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 22 states. [2018-01-30 01:00:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 01:00:34,373 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-01-30 01:00:34,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-30 01:00:34,373 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2018-01-30 01:00:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 01:00:34,374 INFO L225 Difference]: With dead ends: 39 [2018-01-30 01:00:34,374 INFO L226 Difference]: Without dead ends: 38 [2018-01-30 01:00:34,375 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2018-01-30 01:00:34,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-30 01:00:34,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-01-30 01:00:34,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-01-30 01:00:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-01-30 01:00:34,381 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 21 [2018-01-30 01:00:34,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 01:00:34,381 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-01-30 01:00:34,381 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 01:00:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-01-30 01:00:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-30 01:00:34,382 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 01:00:34,383 INFO L350 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 01:00:34,383 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-30 01:00:34,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1838489831, now seen corresponding path program 2 times [2018-01-30 01:00:34,383 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 01:00:34,383 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 01:00:34,384 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:34,384 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 01:00:34,384 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 01:00:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 01:00:34,402 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 01:00:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 01:00:34,694 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 01:00:34,694 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 [2018-01-30 01:00:34,701 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 01:00:34,709 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:34,713 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 01:00:34,714 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 01:00:34,716 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 01:00:34,721 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 [2018-01-30 01:00:34,721 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-30 01:00:34,724 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 01:00:34,725 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-30 01:00:34,753 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 [2018-01-30 01:00:34,755 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 [2018-01-30 01:00:34,758 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:396) 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) [2018-01-30 01:00:34,760 INFO L168 Benchmark]: Toolchain (without parser) took 10077.53 ms. Allocated memory was 308.8 MB in the beginning and 1.0 GB in the end (delta: 692.1 MB). Free memory was 267.8 MB in the beginning and 515.1 MB in the end (delta: -247.2 MB). Peak memory consumption was 444.8 MB. Max. memory is 5.3 GB. [2018-01-30 01:00:34,761 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 308.8 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 01:00:34,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.78 ms. Allocated memory is still 308.8 MB. Free memory was 267.8 MB in the beginning and 257.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-30 01:00:34,762 INFO L168 Benchmark]: Boogie Preprocessor took 29.49 ms. Allocated memory is still 308.8 MB. Free memory was 257.8 MB in the beginning and 255.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-30 01:00:34,762 INFO L168 Benchmark]: RCFGBuilder took 228.67 ms. Allocated memory is still 308.8 MB. Free memory was 255.8 MB in the beginning and 241.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-30 01:00:34,763 INFO L168 Benchmark]: IcfgTransformer took 6500.90 ms. Allocated memory was 308.8 MB in the beginning and 794.3 MB in the end (delta: 485.5 MB). Free memory was 241.2 MB in the beginning and 545.2 MB in the end (delta: -304.0 MB). Peak memory consumption was 181.5 MB. Max. memory is 5.3 GB. [2018-01-30 01:00:34,763 INFO L168 Benchmark]: TraceAbstraction took 3112.96 ms. Allocated memory was 794.3 MB in the beginning and 1.0 GB in the end (delta: 206.6 MB). Free memory was 545.2 MB in the beginning and 515.1 MB in the end (delta: 30.1 MB). Peak memory consumption was 236.7 MB. Max. memory is 5.3 GB. [2018-01-30 01:00:34,765 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 308.8 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 196.78 ms. Allocated memory is still 308.8 MB. Free memory was 267.8 MB in the beginning and 257.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.49 ms. Allocated memory is still 308.8 MB. Free memory was 257.8 MB in the beginning and 255.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 228.67 ms. Allocated memory is still 308.8 MB. Free memory was 255.8 MB in the beginning and 241.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * IcfgTransformer took 6500.90 ms. Allocated memory was 308.8 MB in the beginning and 794.3 MB in the end (delta: 485.5 MB). Free memory was 241.2 MB in the beginning and 545.2 MB in the end (delta: -304.0 MB). Peak memory consumption was 181.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3112.96 ms. Allocated memory was 794.3 MB in the beginning and 1.0 GB in the end (delta: 206.6 MB). Free memory was 545.2 MB in the beginning and 515.1 MB in the end (delta: 30.1 MB). Peak memory consumption was 236.7 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 : 652 LocStat_NO_SUPPORTING_DISEQUALITIES : 177 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) : 0.045389 RENAME_VARIABLES(MILLISECONDS) : 0.398563 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.001102 PROJECTAWAY(MILLISECONDS) : 0.674659 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.127923 DISJOIN(MILLISECONDS) : 0.324832 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.428104 ADD_EQUALITY(MILLISECONDS) : 0.010457 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.010719 #CONJOIN_DISJUNCTIVE : 196 #RENAME_VARIABLES : 409 #UNFREEZE : 0 #CONJOIN : 312 #PROJECTAWAY : 282 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 44 #RENAME_VARIABLES_DISJUNCTIVE : 406 #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/cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_01-00-34-774.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-30_01-00-34-774.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-30_01-00-34-774.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-30_01-00-34-774.csv Received shutdown request...