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_cstrnlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e [2018-01-31 09:31:23,730 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:31:23,732 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:31:23,748 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:31:23,748 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:31:23,749 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:31:23,750 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:31:23,752 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:31:23,755 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:31:23,755 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:31:23,756 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:31:23,757 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:31:23,758 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:31:23,759 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:31:23,760 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:31:23,763 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:31:23,765 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:31:23,767 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:31:23,768 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:31:23,769 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:31:23,772 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:31:23,772 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:31:23,772 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:31:23,773 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:31:23,774 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:31:23,775 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:31:23,775 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:31:23,776 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:31:23,776 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:31:23,776 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:31:23,777 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:31:23,777 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-31 09:31:23,788 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:31:23,788 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:31:23,789 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:31:23,789 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:31:23,789 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:31:23,789 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:31:23,790 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:31:23,790 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:31:23,790 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:31:23,791 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 09:31:23,791 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:31:23,791 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:31:23,791 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:31:23,791 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 09:31:23,791 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 09:31:23,792 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 09:31:23,792 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:31:23,792 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:31:23,792 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:31:23,793 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:31:23,793 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:31:23,793 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:31:23,793 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:31:23,793 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:31:23,794 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:31:23,794 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:31:23,794 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:31:23,794 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:31:23,794 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:31:23,794 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:31:23,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:31:23,795 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:31:23,796 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:31:23,796 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:31:23,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:31:23,850 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:31:23,856 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:31:23,857 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:31:23,857 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:31:23,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i [2018-01-31 09:31:24,034 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:31:24,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-31 09:31:24,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:31:24,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:31:24,056 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:31:24,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:31:24" (1/1) ... [2018-01-31 09:31:24,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30001ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24, skipping insertion in model container [2018-01-31 09:31:24,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:31:24" (1/1) ... [2018-01-31 09:31:24,082 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:31:24,139 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:31:24,308 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:31:24,334 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:31:24,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24 WrapperNode [2018-01-31 09:31:24,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:31:24,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:31:24,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:31:24,343 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:31:24,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24" (1/1) ... [2018-01-31 09:31:24,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24" (1/1) ... [2018-01-31 09:31:24,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24" (1/1) ... [2018-01-31 09:31:24,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24" (1/1) ... [2018-01-31 09:31:24,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24" (1/1) ... [2018-01-31 09:31:24,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24" (1/1) ... [2018-01-31 09:31:24,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24" (1/1) ... [2018-01-31 09:31:24,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:31:24,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:31:24,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:31:24,388 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:31:24,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:31:24,473 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:31:24,473 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:31:24,473 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrnlen [2018-01-31 09:31:24,473 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:31:24,473 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:31:24,474 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:31:24,474 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:31:24,474 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:31:24,474 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:31:24,474 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:31:24,474 INFO L128 BoogieDeclarations]: Found specification of procedure cstrnlen [2018-01-31 09:31:24,474 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:31:24,475 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:31:24,475 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:31:24,964 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:31:24,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:31:24 BoogieIcfgContainer [2018-01-31 09:31:25,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:31:25,001 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-31 09:31:25,001 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-31 09:31:25,002 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-31 09:31:25,005 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:31:24" (1/1) ... [2018-01-31 09:31:25,015 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-31 09:31:25,016 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [#memory_int] [2018-01-31 09:31:25,016 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-31 09:31:25,068 INFO L162 apSepIcfgTransformer]: finished StoreIndexFreezer, created 5 freeze vars and freeze var literals (each corresponds to one heap write) [2018-01-31 09:31:25,092 INFO L221 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-31 09:31:25,159 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 09:31:37,684 INFO L314 AbstractInterpreter]: Visited 63 different actions 358 times. Merged at 37 different actions 176 times. Never widened. Found 22 fixpoints after 3 different actions. Largest state had 39 variables. [2018-01-31 09:31:37,686 INFO L229 apSepIcfgTransformer]: finished equality analysis [2018-01-31 09:31:37,697 INFO L244 HeapSepPreAnalysis]: Number of read from array group [#memory_int] : 2 [2018-01-31 09:31:37,698 INFO L241 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-31 09:31:37,698 INFO L242 apSepIcfgTransformer]: array groups: Set: [#memory_int] [2018-01-31 09:31:37,698 INFO L244 apSepIcfgTransformer]: select infos: Set: ((select (select |v_#memory_int_1| v_cstrnlen_~cp~2.base_3) v_cstrnlen_~cp~2.offset_3), at (SUMMARY for call #t~mem2 := read~int(~cp~2.base, ~cp~2.offset, 1); srcloc: L544''')) ((select |v_#memory_int_5| v_main_~nondetString1~4.base_2), at (SUMMARY for call write~int(0, ~nondetString1~4.base, ~nondetString1~4.offset + (~length1~4 - 1) * 1, 1); srcloc: L558)) [2018-01-31 09:31:37,702 INFO L547 PartitionManager]: partitioning result: [2018-01-31 09:31:37,702 INFO L552 PartitionManager]: location blocks for array group [#memory_int] [2018-01-31 09:31:37,702 INFO L562 PartitionManager]: at dimension 0 [2018-01-31 09:31:37,702 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 2 [2018-01-31 09:31:37,702 INFO L564 PartitionManager]: # location blocks :2 [2018-01-31 09:31:37,702 INFO L562 PartitionManager]: at dimension 1 [2018-01-31 09:31:37,702 INFO L563 PartitionManager]: # array writes (possibly including 1 dummy write/NoStoreIndexInfo) : 1 [2018-01-31 09:31:37,703 INFO L564 PartitionManager]: # location blocks :1 [2018-01-31 09:31:37,703 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-31 09:31:37,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:31:37 BasicIcfg [2018-01-31 09:31:37,721 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-31 09:31:37,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:31:37,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:31:37,725 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:31:37,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:31:24" (1/4) ... [2018-01-31 09:31:37,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f41ceb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:31:37, skipping insertion in model container [2018-01-31 09:31:37,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:31:24" (2/4) ... [2018-01-31 09:31:37,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f41ceb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:31:37, skipping insertion in model container [2018-01-31 09:31:37,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:31:24" (3/4) ... [2018-01-31 09:31:37,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f41ceb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:31:37, skipping insertion in model container [2018-01-31 09:31:37,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:31:37" (4/4) ... [2018-01-31 09:31:37,728 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-31 09:31:37,735 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:31:37,824 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-31 09:31:37,869 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:31:37,869 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:31:37,869 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:31:37,869 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:31:37,870 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:31:37,870 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:31:37,870 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:31:37,870 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:31:37,870 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:31:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2018-01-31 09:31:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-31 09:31:37,886 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:37,887 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:37,888 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:37,891 INFO L82 PathProgramCache]: Analyzing trace with hash 288227188, now seen corresponding path program 1 times [2018-01-31 09:31:37,892 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:37,893 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:37,932 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:37,932 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:37,932 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:37,988 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:38,069 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 09:31:38,071 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:38,071 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:31:38,072 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 09:31:38,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 09:31:38,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-31 09:31:38,082 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2018-01-31 09:31:38,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:38,213 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-01-31 09:31:38,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-31 09:31:38,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-31 09:31:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:38,226 INFO L225 Difference]: With dead ends: 68 [2018-01-31 09:31:38,226 INFO L226 Difference]: Without dead ends: 52 [2018-01-31 09:31:38,229 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 09:31:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-31 09:31:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-01-31 09:31:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-31 09:31:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-31 09:31:38,263 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 13 [2018-01-31 09:31:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:38,263 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-31 09:31:38,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 09:31:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-31 09:31:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-31 09:31:38,264 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:38,264 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:38,264 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:38,265 INFO L82 PathProgramCache]: Analyzing trace with hash 288227190, now seen corresponding path program 1 times [2018-01-31 09:31:38,265 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:38,265 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:38,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:38,266 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:38,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:38,284 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:38,624 WARN L146 SmtUtils]: Spent 168ms on a formula simplification. DAG size of input: 15 DAG size of output 11 [2018-01-31 09:31:38,626 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 09:31:38,626 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:38,626 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 09:31:38,627 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 09:31:38,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 09:31:38,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:31:38,628 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-31 09:31:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:38,827 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-01-31 09:31:38,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 09:31:38,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-01-31 09:31:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:38,829 INFO L225 Difference]: With dead ends: 52 [2018-01-31 09:31:38,829 INFO L226 Difference]: Without dead ends: 51 [2018-01-31 09:31:38,830 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:31:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-31 09:31:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-01-31 09:31:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-31 09:31:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-01-31 09:31:38,841 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 13 [2018-01-31 09:31:38,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:38,841 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-01-31 09:31:38,841 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 09:31:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-01-31 09:31:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-31 09:31:38,843 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:38,843 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:31:38,843 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:38,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1250042976, now seen corresponding path program 1 times [2018-01-31 09:31:38,843 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:38,844 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:38,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:38,845 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:38,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:38,889 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:39,045 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 09:31:39,049 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:39,049 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:31:39,050 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 09:31:39,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 09:31:39,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-31 09:31:39,050 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 4 states. [2018-01-31 09:31:39,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:39,282 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-01-31 09:31:39,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-31 09:31:39,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-01-31 09:31:39,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:39,283 INFO L225 Difference]: With dead ends: 51 [2018-01-31 09:31:39,283 INFO L226 Difference]: Without dead ends: 40 [2018-01-31 09:31:39,284 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 09:31:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-31 09:31:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-01-31 09:31:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-31 09:31:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-01-31 09:31:39,289 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 19 [2018-01-31 09:31:39,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:39,290 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-01-31 09:31:39,290 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 09:31:39,290 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-01-31 09:31:39,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-31 09:31:39,291 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:39,291 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] [2018-01-31 09:31:39,291 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:39,291 INFO L82 PathProgramCache]: Analyzing trace with hash -958628845, now seen corresponding path program 1 times [2018-01-31 09:31:39,291 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:39,292 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:39,292 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:39,293 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:39,293 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:39,306 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:39,378 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 09:31:39,378 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:39,378 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:31:39,378 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:31:39,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:31:39,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:31:39,379 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2018-01-31 09:31:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:39,635 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-01-31 09:31:39,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 09:31:39,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-01-31 09:31:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:39,636 INFO L225 Difference]: With dead ends: 51 [2018-01-31 09:31:39,636 INFO L226 Difference]: Without dead ends: 50 [2018-01-31 09:31:39,636 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:31:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-01-31 09:31:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-01-31 09:31:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-31 09:31:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-01-31 09:31:39,642 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 22 [2018-01-31 09:31:39,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:39,643 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-01-31 09:31:39,643 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:31:39,643 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-01-31 09:31:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-31 09:31:39,644 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:39,644 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] [2018-01-31 09:31:39,644 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:39,644 INFO L82 PathProgramCache]: Analyzing trace with hash -958628843, now seen corresponding path program 1 times [2018-01-31 09:31:39,644 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:39,644 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:39,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:39,645 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:39,645 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:39,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:40,101 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 09:31:40,101 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:40,102 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-31 09:31:40,102 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:31:40,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:31:40,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:31:40,103 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 9 states. [2018-01-31 09:31:40,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:40,186 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2018-01-31 09:31:40,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-31 09:31:40,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-31 09:31:40,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:40,188 INFO L225 Difference]: With dead ends: 51 [2018-01-31 09:31:40,188 INFO L226 Difference]: Without dead ends: 50 [2018-01-31 09:31:40,188 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-01-31 09:31:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-01-31 09:31:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-01-31 09:31:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-31 09:31:40,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2018-01-31 09:31:40,194 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 22 [2018-01-31 09:31:40,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:40,194 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2018-01-31 09:31:40,194 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:31:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2018-01-31 09:31:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-31 09:31:40,196 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:40,196 INFO L351 BasicCegarLoop]: trace histogram [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] [2018-01-31 09:31:40,196 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:40,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1879015571, now seen corresponding path program 1 times [2018-01-31 09:31:40,196 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:40,196 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:40,197 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:40,197 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:40,197 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:40,208 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:40,244 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:40,244 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:31:40,244 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:31:40,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:31:40,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:31:40,245 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 3 states. [2018-01-31 09:31:40,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:40,278 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2018-01-31 09:31:40,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:31:40,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-01-31 09:31:40,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:40,279 INFO L225 Difference]: With dead ends: 61 [2018-01-31 09:31:40,280 INFO L226 Difference]: Without dead ends: 44 [2018-01-31 09:31:40,280 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 09:31:40,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-31 09:31:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-01-31 09:31:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-01-31 09:31:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2018-01-31 09:31:40,288 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 34 [2018-01-31 09:31:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:40,288 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2018-01-31 09:31:40,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:31:40,288 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2018-01-31 09:31:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-31 09:31:40,289 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:40,289 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] [2018-01-31 09:31:40,289 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:40,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1511237317, now seen corresponding path program 1 times [2018-01-31 09:31:40,290 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:40,290 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:40,291 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:40,291 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:40,291 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:40,315 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-31 09:31:40,403 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:31:40,404 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-31 09:31:40,404 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 09:31:40,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 09:31:40,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:31:40,404 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2018-01-31 09:31:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:40,485 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-01-31 09:31:40,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:31:40,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-01-31 09:31:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:40,524 INFO L225 Difference]: With dead ends: 44 [2018-01-31 09:31:40,524 INFO L226 Difference]: Without dead ends: 43 [2018-01-31 09:31:40,524 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:31:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-01-31 09:31:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-01-31 09:31:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-31 09:31:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-01-31 09:31:40,529 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 36 [2018-01-31 09:31:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:40,530 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-01-31 09:31:40,530 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 09:31:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-01-31 09:31:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-31 09:31:40,531 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:40,531 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] [2018-01-31 09:31:40,531 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1511237319, now seen corresponding path program 1 times [2018-01-31 09:31:40,531 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:40,531 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:40,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:40,532 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:40,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:40,563 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:41,092 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 09:31:41,092 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:31:41,092 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 09:31:41,099 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:41,146 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:31:41,179 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2018-01-31 09:31:41,179 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-31 09:31:41,208 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-01-31 09:31:41,219 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-01-31 09:31:41,219 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-31 09:31:41,244 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-31 09:31:41,253 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-31 09:31:41,253 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:25, output treesize:21 [2018-01-31 09:31:41,511 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-01-31 09:31:41,644 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2018-01-31 09:31:41,645 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-01-31 09:31:41,717 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-31 09:31:41,902 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-01-31 09:31:41,903 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-01-31 09:31:42,219 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 09:31:42,249 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 09:31:42,249 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2018-01-31 09:31:42,250 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-31 09:31:42,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-31 09:31:42,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2018-01-31 09:31:42,250 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 22 states. [2018-01-31 09:31:44,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:31:44,588 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2018-01-31 09:31:44,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-31 09:31:44,588 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2018-01-31 09:31:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:31:44,589 INFO L225 Difference]: With dead ends: 64 [2018-01-31 09:31:44,589 INFO L226 Difference]: Without dead ends: 63 [2018-01-31 09:31:44,589 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=177, Invalid=879, Unknown=0, NotChecked=0, Total=1056 [2018-01-31 09:31:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-01-31 09:31:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2018-01-31 09:31:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-31 09:31:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2018-01-31 09:31:44,596 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 36 [2018-01-31 09:31:44,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:31:44,596 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2018-01-31 09:31:44,596 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-31 09:31:44,597 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2018-01-31 09:31:44,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-31 09:31:44,598 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:31:44,598 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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] [2018-01-31 09:31:44,598 INFO L371 AbstractCegarLoop]: === Iteration 9 === [cstrnlenErr0RequiresViolation, cstrnlenErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-31 09:31:44,599 INFO L82 PathProgramCache]: Analyzing trace with hash -83283463, now seen corresponding path program 2 times [2018-01-31 09:31:44,599 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:31:44,599 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:31:44,602 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:44,602 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:31:44,602 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:31:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:31:44,626 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:31:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:31:45,281 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:31:45,281 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 09:31:45,296 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 09:31:45,308 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:31:45,323 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 09:31:45,334 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 09:31:45,339 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:31:45,349 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-31 09:31:45,350 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-31 09:31:45,383 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-31 09:31:45,384 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-31 09:31:45,416 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2018-01-31 09:31:45,418 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-01-31 09:31:45,432 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 09:31:45,435 INFO L168 Benchmark]: Toolchain (without parser) took 21401.33 ms. Allocated memory was 299.9 MB in the beginning and 1.2 GB in the end (delta: 911.7 MB). Free memory was 259.6 MB in the beginning and 610.1 MB in the end (delta: -350.5 MB). Peak memory consumption was 561.2 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:45,436 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 299.9 MB. Free memory is still 265.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:31:45,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.44 ms. Allocated memory is still 299.9 MB. Free memory was 258.6 MB in the beginning and 248.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:45,437 INFO L168 Benchmark]: Boogie Preprocessor took 44.97 ms. Allocated memory is still 299.9 MB. Free memory was 248.4 MB in the beginning and 247.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-31 09:31:45,437 INFO L168 Benchmark]: RCFGBuilder took 612.60 ms. Allocated memory is still 299.9 MB. Free memory was 246.4 MB in the beginning and 229.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:45,437 INFO L168 Benchmark]: IcfgTransformer took 12720.09 ms. Allocated memory was 299.9 MB in the beginning and 1.1 GB in the end (delta: 827.3 MB). Free memory was 229.4 MB in the beginning and 522.4 MB in the end (delta: -293.0 MB). Peak memory consumption was 534.3 MB. Max. memory is 5.3 GB. [2018-01-31 09:31:45,438 INFO L168 Benchmark]: TraceAbstraction took 7713.24 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 84.4 MB). Free memory was 522.4 MB in the beginning and 610.1 MB in the end (delta: -87.7 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:31:45,439 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 299.9 MB. Free memory is still 265.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 293.44 ms. Allocated memory is still 299.9 MB. Free memory was 258.6 MB in the beginning and 248.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 44.97 ms. Allocated memory is still 299.9 MB. Free memory was 248.4 MB in the beginning and 247.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 612.60 ms. Allocated memory is still 299.9 MB. Free memory was 246.4 MB in the beginning and 229.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * IcfgTransformer took 12720.09 ms. Allocated memory was 299.9 MB in the beginning and 1.1 GB in the end (delta: 827.3 MB). Free memory was 229.4 MB in the beginning and 522.4 MB in the end (delta: -293.0 MB). Peak memory consumption was 534.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 7713.24 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 84.4 MB). Free memory was 522.4 MB in the beginning and 610.1 MB in the end (delta: -87.7 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 : 53 LocStat_MAX_WEQGRAPH_SIZE : 4 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 783 LocStat_NO_SUPPORTING_DISEQUALITIES : 218 LocStat_NO_DISJUNCTIONS : -106 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 72 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 104 TransStat_NO_SUPPORTING_DISEQUALITIES : 7 TransStat_NO_DISJUNCTIONS : 75 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.016814 RENAME_VARIABLES(MILLISECONDS) : 0.221250 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.000605 PROJECTAWAY(MILLISECONDS) : 0.126556 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.070429 DISJOIN(MILLISECONDS) : 0.404798 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.246420 ADD_EQUALITY(MILLISECONDS) : 0.019246 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.006461 #CONJOIN_DISJUNCTIVE : 494 #RENAME_VARIABLES : 1094 #UNFREEZE : 0 #CONJOIN : 733 #PROJECTAWAY : 673 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 112 #RENAME_VARIABLES_DISJUNCTIVE : 1072 #ADD_EQUALITY : 105 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 6 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics #COUNT_NEW_ARRAY_VARS_[#memory_int] : 2 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_0 : 2 COUNT_BLOCKS_for_[#memory_int]_at_dim_0 : 2 COUNT_ARRAY_WRITES_for_[#memory_int]_at_dim_1 : 1 COUNT_BLOCKS_for_[#memory_int]_at_dim_1 : 1 COUNT_ARRAY_READS for [#memory_int] : 2 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_1 term size 6 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_1 term size 6: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-31_09-31-45-450.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-31_09-31-45-450.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-31_09-31-45-450.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrnlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-31_09-31-45-450.csv Received shutdown request...