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_cbzero-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e [2018-01-31 09:27:02,648 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:27:02,650 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:27:02,674 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:27:02,674 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:27:02,675 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:27:02,677 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:27:02,680 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:27:02,682 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:27:02,682 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:27:02,694 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:27:02,694 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:27:02,695 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:27:02,696 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:27:02,697 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:27:02,699 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:27:02,705 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:27:02,707 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:27:02,708 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:27:02,712 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:27:02,714 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:27:02,714 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:27:02,715 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:27:02,719 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:27:02,720 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:27:02,721 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:27:02,721 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:27:02,722 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:27:02,724 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:27:02,724 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:27:02,725 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:27:02,725 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 09:27:02,739 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:27:02,740 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:27:02,742 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:27:02,742 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:27:02,743 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:27:02,743 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:27:02,743 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:27:02,744 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:27:02,744 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:27:02,744 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 09:27:02,744 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:27:02,744 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:27:02,744 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:27:02,745 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 09:27:02,745 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 09:27:02,745 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 09:27:02,746 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:27:02,746 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:27:02,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:27:02,746 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:27:02,746 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:27:02,746 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:27:02,747 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:27:02,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:27:02,747 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:27:02,747 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:27:02,747 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:27:02,748 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:27:02,748 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:27:02,748 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:27:02,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:27:02,748 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:27:02,750 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:27:02,750 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:27:02,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:27:02,830 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:27:02,835 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:27:02,836 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:27:02,837 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:27:02,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-31 09:27:03,049 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:27:03,060 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 09:27:03,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:27:03,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:27:03,068 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:27:03,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:27:03" (1/1) ... [2018-01-31 09:27:03,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ade6eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03, skipping insertion in model container [2018-01-31 09:27:03,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:27:03" (1/1) ... [2018-01-31 09:27:03,093 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:27:03,159 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:27:03,332 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:27:03,361 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:27:03,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03 WrapperNode [2018-01-31 09:27:03,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:27:03,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:27:03,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:27:03,371 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:27:03,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03" (1/1) ... [2018-01-31 09:27:03,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03" (1/1) ... [2018-01-31 09:27:03,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03" (1/1) ... [2018-01-31 09:27:03,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03" (1/1) ... [2018-01-31 09:27:03,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03" (1/1) ... [2018-01-31 09:27:03,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03" (1/1) ... [2018-01-31 09:27:03,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03" (1/1) ... [2018-01-31 09:27:03,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:27:03,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:27:03,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:27:03,416 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:27:03,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03" (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 09:27:03,482 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:27:03,483 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:27:03,483 INFO L136 BoogieDeclarations]: Found implementation of procedure cbzero [2018-01-31 09:27:03,483 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:27:03,483 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:27:03,483 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:27:03,483 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:27:03,484 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:27:03,484 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:27:03,484 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:27:03,484 INFO L128 BoogieDeclarations]: Found specification of procedure cbzero [2018-01-31 09:27:03,484 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:27:03,485 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:27:03,485 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:27:03,955 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:27:03,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:27:03 BoogieIcfgContainer [2018-01-31 09:27:03,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:27:03,956 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 09:27:03,956 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 09:27:03,957 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 09:27:03,962 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:27:03" (1/1) ... [2018-01-31 09:27:03,973 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 09:27:03,973 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 09:27:03,973 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 09:27:04,012 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 5 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 09:27:04,041 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 09:27:04,112 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 09:27:18,443 INFO L314 AbstractInterpreter]: Visited 54 different actions 362 times. Merged at 29 different actions 199 times. Never widened. Found 28 fixpoints after 4 different actions. Largest state had 36 variables. [2018-01-31 09:27:18,446 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 09:27:18,458 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 1 [2018-01-31 09:27:18,459 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 09:27:18,459 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 09:27:18,459 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select |v_#memory_int_4| |v_cbzero_#t~post1.base_3|), at (SUMMARY for call write~int(0, #t~post1.base, #t~post1.offset, 1); srcloc: L545'')) [2018-01-31 09:27:18,468 INFO L547 PartitionManager]: partitioning result: [2018-01-31 09:27:18,469 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 09:27:18,469 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 09:27:18,469 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-01-31 09:27:18,469 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 09:27:18,469 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 09:27:18,469 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 0 [2018-01-31 09:27:18,470 INFO L564 PartitionManager]: # location blocks :0 [2018-01-31 09:27:18,470 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 09:27:18,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:27:18 BasicIcfg [2018-01-31 09:27:18,490 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 09:27:18,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:27:18,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:27:18,494 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:27:18,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:27:03" (1/4) ... [2018-01-31 09:27:18,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222a52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:27:18, skipping insertion in model container [2018-01-31 09:27:18,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:27:03" (2/4) ... [2018-01-31 09:27:18,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222a52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:27:18, skipping insertion in model container [2018-01-31 09:27:18,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:27:03" (3/4) ... [2018-01-31 09:27:18,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@222a52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:27:18, skipping insertion in model container [2018-01-31 09:27:18,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:27:18" (4/4) ... [2018-01-31 09:27:18,498 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 09:27:18,508 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:27:18,515 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-31 09:27:18,645 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:27:18,645 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:27:18,645 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:27:18,646 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:27:18,646 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:27:18,646 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:27:18,646 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:27:18,646 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:27:18,647 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:27:18,661 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-01-31 09:27:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-31 09:27:18,667 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:18,668 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:18,668 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:27:18,673 INFO L82 PathProgramCache]: Analyzing trace with hash 35904146, now seen corresponding path program 1 times [2018-01-31 09:27:18,675 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:18,676 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:18,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:18,733 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:27:18,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:18,790 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:18,892 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 09:27:18,895 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:27:18,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:27:18,898 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:27:18,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:27:18,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:27:18,910 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2018-01-31 09:27:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:19,041 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-01-31 09:27:19,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:27:19,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-01-31 09:27:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:19,058 INFO L225 Difference]: With dead ends: 58 [2018-01-31 09:27:19,058 INFO L226 Difference]: Without dead ends: 43 [2018-01-31 09:27:19,063 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:27:19,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-01-31 09:27:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-01-31 09:27:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-31 09:27:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2018-01-31 09:27:19,096 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 13 [2018-01-31 09:27:19,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:19,096 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2018-01-31 09:27:19,096 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:27:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2018-01-31 09:27:19,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-31 09:27:19,097 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:19,097 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:19,097 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:27:19,097 INFO L82 PathProgramCache]: Analyzing trace with hash 566005871, now seen corresponding path program 1 times [2018-01-31 09:27:19,097 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:19,097 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:19,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:19,099 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:27:19,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:19,117 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:19,210 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 09:27:19,211 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:27:19,211 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:27:19,212 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 09:27:19,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 09:27:19,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-31 09:27:19,213 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 4 states. [2018-01-31 09:27:19,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:19,473 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-01-31 09:27:19,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-31 09:27:19,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-01-31 09:27:19,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:19,475 INFO L225 Difference]: With dead ends: 43 [2018-01-31 09:27:19,475 INFO L226 Difference]: Without dead ends: 35 [2018-01-31 09:27:19,476 INFO L554 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 [2018-01-31 09:27:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-31 09:27:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-31 09:27:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-31 09:27:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-31 09:27:19,480 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 18 [2018-01-31 09:27:19,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:19,480 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-31 09:27:19,480 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 09:27:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-31 09:27:19,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-31 09:27:19,481 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:19,481 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:19,481 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:27:19,482 INFO L82 PathProgramCache]: Analyzing trace with hash -560155247, now seen corresponding path program 1 times [2018-01-31 09:27:19,482 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:19,482 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:19,483 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:19,483 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:27:19,483 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:19,497 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:19,822 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 09:27:19,822 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:27:19,823 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-31 09:27:19,823 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-31 09:27:19,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-31 09:27:19,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:27:19,824 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 8 states. [2018-01-31 09:27:20,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:20,066 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-01-31 09:27:20,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-31 09:27:20,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-01-31 09:27:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:20,067 INFO L225 Difference]: With dead ends: 35 [2018-01-31 09:27:20,067 INFO L226 Difference]: Without dead ends: 34 [2018-01-31 09:27:20,068 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-01-31 09:27:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-01-31 09:27:20,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-01-31 09:27:20,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-01-31 09:27:20,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-01-31 09:27:20,073 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 26 [2018-01-31 09:27:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:20,073 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-01-31 09:27:20,073 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-31 09:27:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-01-31 09:27:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-31 09:27:20,074 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:20,075 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:20,075 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:27:20,075 INFO L82 PathProgramCache]: Analyzing trace with hash -560155245, now seen corresponding path program 1 times [2018-01-31 09:27:20,075 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:20,075 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:20,076 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:20,076 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:27:20,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:20,100 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:20,432 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 09:27:20,432 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:27:20,432 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-31 09:27:20,433 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:27:20,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:27:20,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:27:20,434 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 9 states. [2018-01-31 09:27:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:20,955 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-01-31 09:27:20,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-31 09:27:20,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-01-31 09:27:20,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:20,957 INFO L225 Difference]: With dead ends: 43 [2018-01-31 09:27:20,957 INFO L226 Difference]: Without dead ends: 42 [2018-01-31 09:27:20,958 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:27:20,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-31 09:27:20,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-01-31 09:27:20,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-01-31 09:27:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-01-31 09:27:20,964 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 26 [2018-01-31 09:27:20,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:20,964 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-01-31 09:27:20,964 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:27:20,965 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-01-31 09:27:20,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-31 09:27:20,966 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:20,966 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:20,966 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:27:20,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1471657954, now seen corresponding path program 1 times [2018-01-31 09:27:20,966 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:20,967 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:20,967 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:20,968 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:27:20,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:20,992 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:27:21,507 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:27:21,507 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 09:27:21,517 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:27:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:21,559 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:27:21,593 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 09:27:21,594 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-31 09:27:21,606 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-31 09:27:21,607 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-01-31 09:27:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:27:22,647 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:27:22,676 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2018-01-31 09:27:22,676 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-31 09:27:22,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-31 09:27:22,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=912, Unknown=0, NotChecked=0, Total=992 [2018-01-31 09:27:22,677 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 32 states. [2018-01-31 09:27:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:23,708 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2018-01-31 09:27:23,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-31 09:27:23,710 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 35 [2018-01-31 09:27:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:23,712 INFO L225 Difference]: With dead ends: 53 [2018-01-31 09:27:23,712 INFO L226 Difference]: Without dead ends: 52 [2018-01-31 09:27:23,713 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=272, Invalid=2178, Unknown=0, NotChecked=0, Total=2450 [2018-01-31 09:27:23,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-31 09:27:23,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-01-31 09:27:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-31 09:27:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2018-01-31 09:27:23,719 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 35 [2018-01-31 09:27:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:23,719 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2018-01-31 09:27:23,720 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-31 09:27:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2018-01-31 09:27:23,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-31 09:27:23,721 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:27:23,721 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:27:23,721 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 09:27:23,721 INFO L82 PathProgramCache]: Analyzing trace with hash 358703603, now seen corresponding path program 2 times [2018-01-31 09:27:23,722 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:27:23,722 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:27:23,723 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:23,723 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:27:23,723 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:27:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:27:23,768 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:27:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:27:24,364 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:27:24,364 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) [2018-01-31 09:27:24,377 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:27:24,392 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:24,407 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:27:24,409 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:27:24,413 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:27:24,421 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 09:27:24,422 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-31 09:27:24,427 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-31 09:27:24,427 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-01-31 09:27:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:27:25,276 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:27:25,276 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2018-01-31 09:27:25,277 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-31 09:27:25,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-31 09:27:25,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1609, Unknown=0, NotChecked=0, Total=1722 [2018-01-31 09:27:25,278 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 42 states. [2018-01-31 09:27:26,790 WARN L146 SmtUtils]: Spent 118ms on a formula simplification. DAG size of input: 75 DAG size of output 33 [2018-01-31 09:27:27,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:27:27,441 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-01-31 09:27:27,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-31 09:27:27,442 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 44 [2018-01-31 09:27:27,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:27:27,442 INFO L225 Difference]: With dead ends: 61 [2018-01-31 09:27:27,442 INFO L226 Difference]: Without dead ends: 0 [2018-01-31 09:27:27,444 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1245 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=539, Invalid=4863, Unknown=0, NotChecked=0, Total=5402 [2018-01-31 09:27:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-31 09:27:27,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-31 09:27:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-31 09:27:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-31 09:27:27,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2018-01-31 09:27:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:27:27,444 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-31 09:27:27,444 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-31 09:27:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-31 09:27:27,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-31 09:27:27,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-31 09:27:27,722 WARN L146 SmtUtils]: Spent 138ms on a formula simplification. DAG size of input: 69 DAG size of output 51 [2018-01-31 09:27:27,849 WARN L146 SmtUtils]: Spent 125ms on a formula simplification. DAG size of input: 26 DAG size of output 1 [2018-01-31 09:27:27,852 INFO L399 ceAbstractionStarter]: For program point L1(lines 1 560) no Hoare annotation was computed. [2018-01-31 09:27:27,852 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 560) no Hoare annotation was computed. [2018-01-31 09:27:27,852 INFO L395 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 560) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-31 09:27:27,852 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 560) no Hoare annotation was computed. [2018-01-31 09:27:27,852 INFO L402 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 560) the Hoare annotation is: true [2018-01-31 09:27:27,852 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 560) no Hoare annotation was computed. [2018-01-31 09:27:27,852 INFO L402 ceAbstractionStarter]: At program point L1(lines 1 560) the Hoare annotation is: true [2018-01-31 09:27:27,852 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 560) no Hoare annotation was computed. [2018-01-31 09:27:27,852 INFO L399 ceAbstractionStarter]: For program point L544'''(lines 544 545) no Hoare annotation was computed. [2018-01-31 09:27:27,852 INFO L399 ceAbstractionStarter]: For program point L545'''(line 545) no Hoare annotation was computed. [2018-01-31 09:27:27,852 INFO L399 ceAbstractionStarter]: For program point L544''''''''(lines 544 545) no Hoare annotation was computed. [2018-01-31 09:27:27,853 INFO L399 ceAbstractionStarter]: For program point L540(lines 540 546) no Hoare annotation was computed. [2018-01-31 09:27:27,853 INFO L399 ceAbstractionStarter]: For program point cbzeroEXIT(lines 540 546) no Hoare annotation was computed. [2018-01-31 09:27:27,853 INFO L399 ceAbstractionStarter]: For program point L544''''(line 544) no Hoare annotation was computed. [2018-01-31 09:27:27,853 INFO L402 ceAbstractionStarter]: At program point cbzeroENTRY(lines 540 546) the Hoare annotation is: true [2018-01-31 09:27:27,853 INFO L399 ceAbstractionStarter]: For program point L545(line 545) no Hoare annotation was computed. [2018-01-31 09:27:27,853 INFO L399 ceAbstractionStarter]: For program point L544(line 544) no Hoare annotation was computed. [2018-01-31 09:27:27,853 INFO L399 ceAbstractionStarter]: For program point L543(line 543) no Hoare annotation was computed. [2018-01-31 09:27:27,853 INFO L395 ceAbstractionStarter]: At program point L544'''''''(lines 544 545) the Hoare annotation is: (let ((.cse7 (select |#length| cbzero_~b.base))) (let ((.cse2 (select |#length| cbzero_~p~2.base)) (.cse0 (<= 0 cbzero_~b.offset)) (.cse1 (= 1 (select |#valid| cbzero_~p~2.base))) (.cse3 (<= cbzero_~b.offset 0)) (.cse4 (<= |cbzero_#in~length| .cse7)) (.cse5 (<= 0 cbzero_~length)) (.cse6 (= 1 (select |#valid| cbzero_~b.base)))) (or (< |cbzero_#in~b.offset| 0) (and .cse0 (<= cbzero_~p~2.offset 1) .cse1 (<= 1 cbzero_~p~2.offset) (<= (+ cbzero_~length 1) .cse2) .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 (<= cbzero_~p~2.offset 0) (<= 1 cbzero_~length) (<= cbzero_~length .cse7) .cse3 (<= cbzero_~length .cse2) .cse4 (<= 0 cbzero_~p~2.offset) .cse6) (and (<= (+ cbzero_~length cbzero_~p~2.offset) .cse2) .cse0 .cse1 (<= 2 cbzero_~p~2.offset) .cse3 .cse4 .cse5 .cse6) (< 0 |cbzero_#in~b.offset|) (< |cbzero_#in~length| 1) (< (select |#length| |cbzero_#in~b.base|) |cbzero_#in~length|) (not (= (select |#valid| |cbzero_#in~b.base|) 1))))) [2018-01-31 09:27:27,853 INFO L399 ceAbstractionStarter]: For program point cbzeroErr0RequiresViolation(lines 1 560) no Hoare annotation was computed. [2018-01-31 09:27:27,853 INFO L399 ceAbstractionStarter]: For program point L544''''''(line 544) no Hoare annotation was computed. [2018-01-31 09:27:27,854 INFO L399 ceAbstractionStarter]: For program point L544'(line 544) no Hoare annotation was computed. [2018-01-31 09:27:27,854 INFO L399 ceAbstractionStarter]: For program point L545''(line 545) no Hoare annotation was computed. [2018-01-31 09:27:27,854 INFO L399 ceAbstractionStarter]: For program point L544''(line 544) no Hoare annotation was computed. [2018-01-31 09:27:27,854 INFO L399 ceAbstractionStarter]: For program point L545'(line 545) no Hoare annotation was computed. [2018-01-31 09:27:27,854 INFO L399 ceAbstractionStarter]: For program point cbzeroErr1RequiresViolation(lines 1 560) no Hoare annotation was computed. [2018-01-31 09:27:27,854 INFO L399 ceAbstractionStarter]: For program point L551(line 551) no Hoare annotation was computed. [2018-01-31 09:27:27,854 INFO L399 ceAbstractionStarter]: For program point L550(lines 550 552) no Hoare annotation was computed. [2018-01-31 09:27:27,854 INFO L399 ceAbstractionStarter]: For program point L553'(lines 553 555) no Hoare annotation was computed. [2018-01-31 09:27:27,854 INFO L399 ceAbstractionStarter]: For program point L557(line 557) no Hoare annotation was computed. [2018-01-31 09:27:27,854 INFO L399 ceAbstractionStarter]: For program point mainFINAL(lines 547 560) no Hoare annotation was computed. [2018-01-31 09:27:27,855 INFO L399 ceAbstractionStarter]: For program point L556(line 556) no Hoare annotation was computed. [2018-01-31 09:27:27,855 INFO L399 ceAbstractionStarter]: For program point L554(line 554) no Hoare annotation was computed. [2018-01-31 09:27:27,855 INFO L399 ceAbstractionStarter]: For program point L549(line 549) no Hoare annotation was computed. [2018-01-31 09:27:27,855 INFO L399 ceAbstractionStarter]: For program point L548(line 548) no Hoare annotation was computed. [2018-01-31 09:27:27,855 INFO L399 ceAbstractionStarter]: For program point mainEXIT(lines 547 560) no Hoare annotation was computed. [2018-01-31 09:27:27,855 INFO L395 ceAbstractionStarter]: At program point L558(line 558) the Hoare annotation is: (and (<= 1 main_~n~4) (<= 0 |main_#t~malloc5.offset|) (= 1 (select |#valid| main_~nondetArea~4.base)) (= |old(#valid)| (store |#valid| |main_#t~malloc5.base| 0)) (<= 0 main_~nondetArea~4.offset) (<= main_~n~4 main_~length~4) (<= main_~n~4 (select |#length| main_~nondetArea~4.base)) (= 1 (select |#valid| |main_#t~malloc5.base|)) (<= main_~n~4 (select |#length| |main_#t~malloc5.base|)) (<= |main_#t~malloc5.offset| 0) (<= main_~nondetArea~4.offset 0)) [2018-01-31 09:27:27,855 INFO L395 ceAbstractionStarter]: At program point mainENTRY(lines 547 560) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-31 09:27:27,855 INFO L399 ceAbstractionStarter]: For program point L557'''(line 557) no Hoare annotation was computed. [2018-01-31 09:27:27,856 INFO L399 ceAbstractionStarter]: For program point L550''(lines 550 552) no Hoare annotation was computed. [2018-01-31 09:27:27,856 INFO L399 ceAbstractionStarter]: For program point L557'(line 557) no Hoare annotation was computed. [2018-01-31 09:27:27,856 INFO L399 ceAbstractionStarter]: For program point L558'(line 558) no Hoare annotation was computed. [2018-01-31 09:27:27,856 INFO L399 ceAbstractionStarter]: For program point L548'(line 548) no Hoare annotation was computed. [2018-01-31 09:27:27,856 INFO L399 ceAbstractionStarter]: For program point L549''(line 549) no Hoare annotation was computed. [2018-01-31 09:27:27,856 INFO L399 ceAbstractionStarter]: For program point L549'(line 549) no Hoare annotation was computed. [2018-01-31 09:27:27,856 INFO L399 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 547 560) no Hoare annotation was computed. [2018-01-31 09:27:27,856 INFO L399 ceAbstractionStarter]: For program point L557''(line 557) no Hoare annotation was computed. [2018-01-31 09:27:27,868 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,869 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,869 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,870 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,870 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,870 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,870 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,871 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,881 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,882 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,882 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,882 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,883 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,883 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,883 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,883 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:27:27 BasicIcfg [2018-01-31 09:27:27,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 09:27:27,887 INFO L168 Benchmark]: Toolchain (without parser) took 24836.69 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 269.2 MB in the beginning and 1.3 GB in the end (delta: -984.8 MB). Peak memory consumption was 134.6 MB. Max. memory is 5.3 GB. [2018-01-31 09:27:27,887 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 309.3 MB. Free memory is still 275.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:27:27,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.34 ms. Allocated memory is still 309.3 MB. Free memory was 268.2 MB in the beginning and 258.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-31 09:27:27,888 INFO L168 Benchmark]: Boogie Preprocessor took 39.28 ms. Allocated memory is still 309.3 MB. Free memory was 258.1 MB in the beginning and 257.1 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. [2018-01-31 09:27:27,888 INFO L168 Benchmark]: RCFGBuilder took 540.38 ms. Allocated memory is still 309.3 MB. Free memory was 257.1 MB in the beginning and 240.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 5.3 GB. [2018-01-31 09:27:27,889 INFO L168 Benchmark]: IcfgTransformer took 14534.05 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 886.0 MB). Free memory was 240.9 MB in the beginning and 709.0 MB in the end (delta: -468.0 MB). Peak memory consumption was 418.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:27:27,889 INFO L168 Benchmark]: TraceAbstraction took 9395.21 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 233.3 MB). Free memory was 709.0 MB in the beginning and 1.3 GB in the end (delta: -545.0 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:27:27,894 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 309.3 MB. Free memory is still 275.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 309.34 ms. Allocated memory is still 309.3 MB. Free memory was 268.2 MB in the beginning and 258.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 39.28 ms. Allocated memory is still 309.3 MB. Free memory was 258.1 MB in the beginning and 257.1 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. * RCFGBuilder took 540.38 ms. Allocated memory is still 309.3 MB. Free memory was 257.1 MB in the beginning and 240.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 5.3 GB. * IcfgTransformer took 14534.05 ms. Allocated memory was 309.3 MB in the beginning and 1.2 GB in the end (delta: 886.0 MB). Free memory was 240.9 MB in the beginning and 709.0 MB in the end (delta: -468.0 MB). Peak memory consumption was 418.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 9395.21 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 233.3 MB). Free memory was 709.0 MB in the beginning and 1.3 GB in the end (delta: -545.0 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 45 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 609 LocStat_NO_SUPPORTING_DISEQUALITIES : 236 LocStat_NO_DISJUNCTIONS : -90 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 63 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 93 TransStat_NO_SUPPORTING_DISEQUALITIES : 5 TransStat_NO_DISJUNCTIONS : 63 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 3.517626 RENAME_VARIABLES(MILLISECONDS) : 0.711201 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 1.712981 PROJECTAWAY(MILLISECONDS) : 0.111939 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.058895 DISJOIN(MILLISECONDS) : 0.422846 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.735719 ADD_EQUALITY(MILLISECONDS) : 0.020396 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.017998 #CONJOIN_DISJUNCTIVE : 628 #RENAME_VARIABLES : 1401 #UNFREEZE : 0 #CONJOIN : 911 #PROJECTAWAY : 843 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 146 #RENAME_VARIABLES_DISJUNCTIVE : 1401 #ADD_EQUALITY : 94 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics #COUNT_NEW_ARRAY_VARS_[#memory_int] : 0 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 1 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 1 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_1 : 0 COUNT_BLOCKS_for_[#memory_int]_at_dim_1 : 0 COUNT_ARRAY_READS for [#memory_int] : 1 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 544]: Loop Invariant [2018-01-31 09:27:27,910 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,910 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,910 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,910 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,911 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,911 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,917 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,917 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,920 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,920 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,921 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,921 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,921 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,921 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,921 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 09:27:27,922 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((((b < 0 || ((((((((0 <= b && p <= 1) && 1 == \valid[p]) && 1 <= p) && length + 1 <= unknown-#length-unknown[p]) && b <= 0) && \old(length) <= unknown-#length-unknown[b]) && 0 <= length) && 1 == \valid[b])) || (((((((((0 <= b && 1 == \valid[p]) && p <= 0) && 1 <= length) && length <= unknown-#length-unknown[b]) && b <= 0) && length <= unknown-#length-unknown[p]) && \old(length) <= unknown-#length-unknown[b]) && 0 <= p) && 1 == \valid[b])) || (((((((length + p <= unknown-#length-unknown[p] && 0 <= b) && 1 == \valid[p]) && 2 <= p) && b <= 0) && \old(length) <= unknown-#length-unknown[b]) && 0 <= length) && 1 == \valid[b])) || 0 < b) || \old(length) < 1) || unknown-#length-unknown[b] < \old(length)) || !(\valid[b] == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 47 locations, 3 error locations. SAFE Result, 9.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 4.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 202 SDtfs, 357 SDslu, 1493 SDs, 0 SdLazy, 1175 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 198 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1788 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 10 NumberOfFragments, 193 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 286 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 233 ConstructedInterpolants, 8 QuantifiedInterpolants, 82652 SizeOfPredicates, 42 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 0/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-31_09-27-27-928.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-31_09-27-27-928.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-31_09-27-27-928.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-31_09-27-27-928.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_09-27-27-928.csv Received shutdown request...