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_cstrcspn-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e [2018-01-31 09:30:22,404 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:30:22,406 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:30:22,428 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:30:22,429 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:30:22,430 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:30:22,431 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:30:22,433 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:30:22,436 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:30:22,436 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:30:22,439 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:30:22,439 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:30:22,440 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:30:22,450 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:30:22,451 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:30:22,455 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:30:22,457 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:30:22,459 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:30:22,460 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:30:22,461 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:30:22,466 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:30:22,466 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:30:22,467 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:30:22,467 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:30:22,471 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:30:22,473 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:30:22,473 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:30:22,474 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:30:22,474 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:30:22,474 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:30:22,474 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:30:22,475 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 09:30:22,487 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:30:22,488 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:30:22,488 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:30:22,489 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:30:22,489 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:30:22,489 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:30:22,489 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:30:22,490 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:30:22,490 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:30:22,490 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 09:30:22,490 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:30:22,490 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:30:22,491 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:30:22,491 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 09:30:22,491 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 09:30:22,491 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 09:30:22,491 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:30:22,491 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:30:22,492 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:30:22,492 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:30:22,492 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:30:22,492 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:30:22,492 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:30:22,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:30:22,493 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:30:22,493 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:30:22,493 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:30:22,493 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:30:22,493 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:30:22,493 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:30:22,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:30:22,494 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:30:22,494 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:30:22,495 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:30:22,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:30:22,565 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:30:22,569 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:30:22,571 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:30:22,571 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:30:22,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-01-31 09:30:22,825 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:30:22,836 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 09:30:22,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:30:22,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:30:22,844 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:30:22,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:30:22" (1/1) ... [2018-01-31 09:30:22,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b312c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:22, skipping insertion in model container [2018-01-31 09:30:22,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:30:22" (1/1) ... [2018-01-31 09:30:22,869 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:30:22,925 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:30:23,090 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:30:23,118 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:30:23,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:23 WrapperNode [2018-01-31 09:30:23,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:30:23,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:30:23,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:30:23,131 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:30:23,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:23" (1/1) ... [2018-01-31 09:30:23,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:23" (1/1) ... [2018-01-31 09:30:23,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:23" (1/1) ... [2018-01-31 09:30:23,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:23" (1/1) ... [2018-01-31 09:30:23,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:23" (1/1) ... [2018-01-31 09:30:23,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:23" (1/1) ... [2018-01-31 09:30:23,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:23" (1/1) ... [2018-01-31 09:30:23,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:30:23,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:30:23,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:30:23,172 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:30:23,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:23" (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 09:30:23,242 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:30:23,242 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:30:23,242 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrcspn [2018-01-31 09:30:23,243 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:30:23,243 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:30:23,243 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:30:23,243 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:30:23,244 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:30:23,244 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:30:23,244 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:30:23,244 INFO L128 BoogieDeclarations]: Found specification of procedure cstrcspn [2018-01-31 09:30:23,244 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:30:23,244 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:30:23,244 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:30:23,720 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:30:23,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:30:23 BoogieIcfgContainer [2018-01-31 09:30:23,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:30:23,722 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 09:30:23,722 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 09:30:23,723 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 09:30:23,725 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:30:23" (1/1) ... [2018-01-31 09:30:23,734 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 09:30:23,734 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 09:30:23,735 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 09:30:23,788 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 9 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 09:30:23,819 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 09:30:23,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 09:31:15,989 INFO L314 AbstractInterpreter]: Visited 81 different actions 690 times. Merged at 48 different actions 381 times. Never widened. Found 51 fixpoints after 5 different actions. Largest state had 58 variables. [2018-01-31 09:31:15,992 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 09:31:16,008 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 4 [2018-01-31 09:31:16,009 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 09:31:16,009 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 09:31:16,010 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select |v_#memory_int_6| v_main_~nondetString1~5.base_2), at (SUMMARY for call write~int(0, ~nondetString1~5.base, ~nondetString1~5.offset + (~length1~5 - 1) * 1, 1); srcloc: L565)) ((select |v_#memory_int_8| v_main_~nondetString2~5.base_2), at (SUMMARY for call write~int(0, ~nondetString2~5.base, ~nondetString2~5.offset + (~length2~5 - 1) * 1, 1); srcloc: L565')) ((select (select |v_#memory_int_1| |v_cstrcspn_#t~post0.base_3|) |v_cstrcspn_#t~post0.offset_3|), at (SUMMARY for call #t~mem1 := read~int(#t~post0.base, #t~post0.offset, 1); srcloc: L546'')) ((select (select |v_#memory_int_2| |v_cstrcspn_#t~post2.base_3|) |v_cstrcspn_#t~post2.offset_3|), at (SUMMARY for call #t~mem3 := read~int(#t~post2.base, #t~post2.offset, 1); srcloc: L549'')) [2018-01-31 09:31:16,017 INFO L547 PartitionManager]: partitioning result: [2018-01-31 09:31:16,017 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 09:31:16,018 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 09:31:16,018 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 3 [2018-01-31 09:31:16,018 INFO L564 PartitionManager]: # location blocks :3 [2018-01-31 09:31:16,018 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 09:31:16,018 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-01-31 09:31:16,018 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 09:31:16,019 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 09:31:16,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:31:16 BasicIcfg [2018-01-31 09:31:16,036 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 09:31:16,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:31:16,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:31:16,041 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:31:16,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:30:22" (1/4) ... [2018-01-31 09:31:16,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac94776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:31:16, skipping insertion in model container [2018-01-31 09:31:16,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:30:23" (2/4) ... [2018-01-31 09:31:16,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac94776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:31:16, skipping insertion in model container [2018-01-31 09:31:16,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:30:23" (3/4) ... [2018-01-31 09:31:16,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac94776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:31:16, skipping insertion in model container [2018-01-31 09:31:16,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:31:16" (4/4) ... [2018-01-31 09:31:16,045 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 09:31:16,054 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:31:16,163 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-01-31 09:31:16,218 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:31:16,218 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:31:16,218 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:31:16,218 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:31:16,218 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:31:16,218 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:31:16,219 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:31:16,219 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:31:16,220 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:31:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2018-01-31 09:31:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-31 09:31:16,240 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:16,241 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:16,241 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 09:31:16,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1742139806, now seen corresponding path program 1 times [2018-01-31 09:31:16,245 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:16,246 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:16,289 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:16,289 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:16,289 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:16,349 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:16,514 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:16,514 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:31:16,515 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 09:31:16,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 09:31:16,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-31 09:31:16,525 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2018-01-31 09:31:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:16,885 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2018-01-31 09:31:16,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-31 09:31:16,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-31 09:31:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:16,897 INFO L225 Difference]: With dead ends: 110 [2018-01-31 09:31:16,897 INFO L226 Difference]: Without dead ends: 68 [2018-01-31 09:31:16,901 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:31:16,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-01-31 09:31:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-01-31 09:31:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-31 09:31:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2018-01-31 09:31:16,939 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 15 [2018-01-31 09:31:16,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:16,939 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2018-01-31 09:31:16,939 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 09:31:16,939 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2018-01-31 09:31:16,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-31 09:31:16,940 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:16,940 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:16,940 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 09:31:16,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1742139808, now seen corresponding path program 1 times [2018-01-31 09:31:16,941 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:16,941 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:16,942 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:16,942 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:16,942 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:16,956 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:17,177 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:17,177 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:31:17,178 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:31:17,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:31:17,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:31:17,178 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 6 states. [2018-01-31 09:31:17,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:17,369 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2018-01-31 09:31:17,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 09:31:17,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-01-31 09:31:17,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:17,371 INFO L225 Difference]: With dead ends: 68 [2018-01-31 09:31:17,371 INFO L226 Difference]: Without dead ends: 67 [2018-01-31 09:31:17,372 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:31:17,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-31 09:31:17,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-01-31 09:31:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-31 09:31:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2018-01-31 09:31:17,379 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 15 [2018-01-31 09:31:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:17,379 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2018-01-31 09:31:17,379 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:31:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2018-01-31 09:31:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-31 09:31:17,380 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:17,380 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:17,380 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 09:31:17,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1828240543, now seen corresponding path program 1 times [2018-01-31 09:31:17,381 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:17,381 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:17,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:17,382 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:17,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:17,394 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:17,470 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:17,470 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:31:17,471 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 09:31:17,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 09:31:17,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-31 09:31:17,471 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 4 states. [2018-01-31 09:31:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:17,522 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2018-01-31 09:31:17,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-31 09:31:17,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-31 09:31:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:17,524 INFO L225 Difference]: With dead ends: 67 [2018-01-31 09:31:17,524 INFO L226 Difference]: Without dead ends: 66 [2018-01-31 09:31:17,525 INFO L554 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 [2018-01-31 09:31:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-31 09:31:17,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-01-31 09:31:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-31 09:31:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2018-01-31 09:31:17,532 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 16 [2018-01-31 09:31:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:17,532 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2018-01-31 09:31:17,532 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 09:31:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2018-01-31 09:31:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-31 09:31:17,533 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:17,533 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:17,533 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 09:31:17,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1828240541, now seen corresponding path program 1 times [2018-01-31 09:31:17,534 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:17,534 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:17,535 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:17,535 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:17,535 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:17,546 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:17,633 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:17,633 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 09:31:17,634 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 09:31:17,634 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 09:31:17,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:31:17,634 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 5 states. [2018-01-31 09:31:17,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:17,788 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2018-01-31 09:31:17,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 09:31:17,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-31 09:31:17,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:17,793 INFO L225 Difference]: With dead ends: 66 [2018-01-31 09:31:17,793 INFO L226 Difference]: Without dead ends: 65 [2018-01-31 09:31:17,794 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:31:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-31 09:31:17,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-01-31 09:31:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-31 09:31:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-01-31 09:31:17,803 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 16 [2018-01-31 09:31:17,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:17,803 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-01-31 09:31:17,803 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 09:31:17,803 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-01-31 09:31:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-31 09:31:17,804 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:17,804 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] [2018-01-31 09:31:17,804 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 09:31:17,805 INFO L82 PathProgramCache]: Analyzing trace with hash -617782031, now seen corresponding path program 1 times [2018-01-31 09:31:17,805 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:17,808 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:17,809 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:17,809 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:17,809 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:17,850 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:18,120 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:18,120 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:31:18,120 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:31:18,120 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:31:18,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:31:18,121 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 6 states. [2018-01-31 09:31:18,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:18,323 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2018-01-31 09:31:18,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-31 09:31:18,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-31 09:31:18,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:18,325 INFO L225 Difference]: With dead ends: 65 [2018-01-31 09:31:18,325 INFO L226 Difference]: Without dead ends: 52 [2018-01-31 09:31:18,325 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:31:18,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-31 09:31:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-01-31 09:31:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-31 09:31:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-01-31 09:31:18,331 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 24 [2018-01-31 09:31:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:18,332 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-01-31 09:31:18,332 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:31:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-01-31 09:31:18,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-31 09:31:18,333 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:18,333 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, 1, 1, 1] [2018-01-31 09:31:18,333 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 09:31:18,333 INFO L82 PathProgramCache]: Analyzing trace with hash -722455846, now seen corresponding path program 1 times [2018-01-31 09:31:18,333 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:18,334 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:18,334 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:18,335 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:18,335 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:18,350 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:18,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:18,449 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:18,450 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-31 09:31:18,450 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 09:31:18,450 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 09:31:18,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:31:18,450 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 7 states. [2018-01-31 09:31:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:18,608 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-01-31 09:31:18,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:31:18,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-01-31 09:31:18,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:18,610 INFO L225 Difference]: With dead ends: 52 [2018-01-31 09:31:18,610 INFO L226 Difference]: Without dead ends: 51 [2018-01-31 09:31:18,610 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:31:18,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-31 09:31:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-01-31 09:31:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-31 09:31:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-01-31 09:31:18,615 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 29 [2018-01-31 09:31:18,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:18,616 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-01-31 09:31:18,616 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 09:31:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-01-31 09:31:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-31 09:31:18,617 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:18,617 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, 1, 1, 1] [2018-01-31 09:31:18,617 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 09:31:18,617 INFO L82 PathProgramCache]: Analyzing trace with hash -722455844, now seen corresponding path program 1 times [2018-01-31 09:31:18,617 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:18,618 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:18,618 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:18,618 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:18,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:18,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:18,886 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:18,887 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-31 09:31:18,887 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:31:18,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:31:18,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:31:18,887 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 10 states. [2018-01-31 09:31:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:19,029 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-01-31 09:31:19,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-31 09:31:19,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2018-01-31 09:31:19,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:19,032 INFO L225 Difference]: With dead ends: 59 [2018-01-31 09:31:19,032 INFO L226 Difference]: Without dead ends: 58 [2018-01-31 09:31:19,032 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-01-31 09:31:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-01-31 09:31:19,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2018-01-31 09:31:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-31 09:31:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-01-31 09:31:19,043 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 29 [2018-01-31 09:31:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:19,043 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-01-31 09:31:19,043 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:31:19,043 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-01-31 09:31:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-31 09:31:19,046 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:19,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:19,047 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 09:31:19,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1386242524, now seen corresponding path program 1 times [2018-01-31 09:31:19,047 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:19,047 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:19,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:19,048 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:19,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:19,080 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:19,186 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:19,186 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-31 09:31:19,187 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 09:31:19,187 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 09:31:19,187 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:31:19,187 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2018-01-31 09:31:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:19,273 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-01-31 09:31:19,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:31:19,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2018-01-31 09:31:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:19,275 INFO L225 Difference]: With dead ends: 60 [2018-01-31 09:31:19,275 INFO L226 Difference]: Without dead ends: 59 [2018-01-31 09:31:19,275 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:31:19,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-31 09:31:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-01-31 09:31:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-01-31 09:31:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2018-01-31 09:31:19,281 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 37 [2018-01-31 09:31:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:19,281 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2018-01-31 09:31:19,282 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 09:31:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2018-01-31 09:31:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-31 09:31:19,283 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:19,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:19,283 INFO L371 AbstractCegarLoop]: === Iteration 9 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 09:31:19,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1386242522, now seen corresponding path program 1 times [2018-01-31 09:31:19,283 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:19,283 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:19,284 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:19,284 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:19,284 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:19,297 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:19,464 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:19,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-31 09:31:19,464 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-31 09:31:19,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-31 09:31:19,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:31:19,465 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2018-01-31 09:31:19,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:19,624 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-01-31 09:31:19,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-31 09:31:19,655 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-01-31 09:31:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:19,656 INFO L225 Difference]: With dead ends: 63 [2018-01-31 09:31:19,656 INFO L226 Difference]: Without dead ends: 62 [2018-01-31 09:31:19,657 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-01-31 09:31:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-31 09:31:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2018-01-31 09:31:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-01-31 09:31:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2018-01-31 09:31:19,664 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 37 [2018-01-31 09:31:19,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:19,664 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2018-01-31 09:31:19,664 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-31 09:31:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2018-01-31 09:31:19,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-31 09:31:19,666 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:19,666 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:19,666 INFO L371 AbstractCegarLoop]: === Iteration 10 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 09:31:19,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1905239105, now seen corresponding path program 1 times [2018-01-31 09:31:19,666 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:19,667 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:19,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:19,667 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:19,668 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:19,683 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:20,001 WARN L143 SmtUtils]: Spent 104ms on a formula simplification that was a NOOP. DAG size: 11 [2018-01-31 09:31:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:20,178 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:31:20,178 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:31:20,194 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:20,243 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:31:20,297 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 14 treesize of output 12 [2018-01-31 09:31:20,315 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 12 treesize of output 15 [2018-01-31 09:31:20,332 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_1 term size 6 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:270) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:445) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:237) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-31 09:31:20,335 INFO L168 Benchmark]: Toolchain (without parser) took 57508.96 ms. Allocated memory was 305.1 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 264.9 MB in the beginning and 1.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 456.2 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:20,336 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:31:20,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.08 ms. Allocated memory is still 305.1 MB. Free memory was 263.9 MB in the beginning and 253.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:20,336 INFO L168 Benchmark]: Boogie Preprocessor took 40.09 ms. Allocated memory is still 305.1 MB. Free memory was 253.9 MB in the beginning and 251.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:20,337 INFO L168 Benchmark]: RCFGBuilder took 549.87 ms. Allocated memory is still 305.1 MB. Free memory was 251.9 MB in the beginning and 231.8 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:20,337 INFO L168 Benchmark]: IcfgTransformer took 52315.07 ms. Allocated memory was 305.1 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 231.8 MB in the beginning and 195.9 MB in the end (delta: 35.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. [2018-01-31 09:31:20,337 INFO L168 Benchmark]: TraceAbstraction took 4296.82 ms. Allocated memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: 100.1 MB). Free memory was 195.9 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:31:20,339 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 293.08 ms. Allocated memory is still 305.1 MB. Free memory was 263.9 MB in the beginning and 253.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.09 ms. Allocated memory is still 305.1 MB. Free memory was 253.9 MB in the beginning and 251.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 549.87 ms. Allocated memory is still 305.1 MB. Free memory was 251.9 MB in the beginning and 231.8 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 5.3 GB. * IcfgTransformer took 52315.07 ms. Allocated memory was 305.1 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 231.8 MB in the beginning and 195.9 MB in the end (delta: 35.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. * TraceAbstraction took 4296.82 ms. Allocated memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: 100.1 MB). Free memory was 195.9 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 67 LocStat_MAX_WEQGRAPH_SIZE : 5 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 1819 LocStat_NO_SUPPORTING_DISEQUALITIES : 1019 LocStat_NO_DISJUNCTIONS : -134 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 90 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 148 TransStat_NO_SUPPORTING_DISEQUALITIES : 11 TransStat_NO_DISJUNCTIONS : 91 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 2.041638 RENAME_VARIABLES(MILLISECONDS) : 0.008492 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 1.079536 PROJECTAWAY(MILLISECONDS) : 0.741475 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.114554 DISJOIN(MILLISECONDS) : 0.559963 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.017932 ADD_EQUALITY(MILLISECONDS) : 0.043286 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.010471 #CONJOIN_DISJUNCTIVE : 1091 #RENAME_VARIABLES : 2302 #UNFREEZE : 0 #CONJOIN : 1409 #PROJECTAWAY : 1297 #ADD_WEAK_EQUALITY : 11 #DISJOIN : 196 #RENAME_VARIABLES_DISJUNCTIVE : 2314 #ADD_EQUALITY : 150 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 9 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics #COUNT_NEW_ARRAY_VARS_[#memory_int] : 3 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 3 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 3 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_1 : 2 COUNT_BLOCKS_for_[#memory_int]_at_dim_1 : 1 COUNT_ARRAY_READS for [#memory_int] : 4 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_1 term size 6 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_1 term size 6: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-31_09-31-20-349.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-31_09-31-20-349.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-31_09-31-20-349.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-31_09-31-20-349.csv Received shutdown request...